0001193125-21-049128.txt : 20210219 0001193125-21-049128.hdr.sgml : 20210219 20210219172749 ACCESSION NUMBER: 0001193125-21-049128 CONFORMED SUBMISSION TYPE: 10-K PUBLIC DOCUMENT COUNT: 74 CONFORMED PERIOD OF REPORT: 20201231 FILED AS OF DATE: 20210219 DATE AS OF CHANGE: 20210219 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ProShares Trust II CENTRAL INDEX KEY: 0001415311 STANDARD INDUSTRIAL CLASSIFICATION: [6221] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 10-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-34200 FILM NUMBER: 21657335 BUSINESS ADDRESS: STREET 1: 7501 WISCONSIN AVE STREET 2: SUITE 1000 CITY: BETHESDA STATE: MD ZIP: 20814 BUSINESS PHONE: 240-497-6400 MAIL ADDRESS: STREET 1: 7501 WISCONSIN AVE STREET 2: SUITE 1000 CITY: BETHESDA STATE: MD ZIP: 20814 FORMER COMPANY: FORMER CONFORMED NAME: Commodities & Currencies Trust DATE OF NAME CHANGE: 20071016 10-K 1 d44117d10k.htm 10-K 10-K
P1DfalseFY0001415311--12-310Rates shown represent discount rate at the time of purchase.All or partial amount pledged as collateral for futures contracts.All or partial amount pledged as collateral for swap agreements.All or partial amount pledged as collateral for foreign currency forward contracts.The operations include the activity of ProShares UltraPro 3x Crude Oil ETF through April 3, 2020, and ProShares UltraPro 3x Short Crude Oil ETF through April 13, 2020, the date of liquidation, respectively.The positions and counterparties herein are as of December 31, 2019. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.Reflects the floating financing rate, as of December 31, 2019, on the notional amount of the swap agreement paid to the counterparty or received from the counterparty, excluding any commissions. Total Return Swap Agreements payment is due at termination/maturity.The positions and counterparties herein are as of December 31, 2020. The Fund continually evaluates different counterparties for their transactions and counterparties are subject to change. New counterparties can be added at any time.For swap agreements, a positive amount represents “long” exposure to the benchmark index. A negative amount represents “short” exposure to the benchmark index.The operations include the activity of ProShares UltraPro 3x Crude Oil ETF through April 3, 2020, and ProShares UltraPro 3x Short Crude Oil ETF through April 13, 2020, the date of liquidation, respectively. On December 16, 2020 each VIX Fund transferred its listing from the NYSE Arca to the Cboe BZX Exchange. Please see Note 8 in these Notes to Financial Statements for more information.Includes cumulative appreciation (depreciation) of futures contracts as reported in the Schedule of Investments. Only current day’s variation margin is reported within the Statements of Financial Condition in receivable/payable on open futures. See Note 1 of these Notes to Financial Statements. The amount shown for a share outstanding throughout the period may not accord with the change in aggregate gains and losses during the period because of timing of creation and redemption units in relation to fluctuating net asset value during the period. Market values are determined at the close of the applicable primary listing exchange, which may be later than when the Funds’ net asset value is calculated. Expense ratio, excluding non-recurring fees and expense is 0.97%, 1.32%, 1.32%, 1.61%, 0.95% and 1.00%, respectively. Expense ratio, excluding non-recurring fees and expense, is 1.04%, 1.65%, 0.95%, 0.95%, 0.95% and 1.03%, respectively.Expense ratio, excluding non-recurring fees and expense is 1.16%. Expense ratio, excluding non-recurring fees and expense is 1.53%. Reflects the floating financing rate, as of December 31, 2020, on the notional amount of the swap agreement paid to the counterparty or received from the counterparty, excluding any commissions. Total Return Swap Agreements payment is due at termination/maturity.On Monday, October 26, 2020, each Fund changed its NAV calculation time from 4:15 p.m. (Eastern Time) to 4:00 p.m. (Eastern Time). Please see Note 8 in these Notes to Financial Statements for more information. Expense ratio, excluding non-recurring fees and expense is 1.61%, 1.88%, 0.95%, 1.02%, 1.10% and 0.95%, respectively. Although the Funds’ shares may continue to trade on secondary markets subsequent to the calculation of the final NAV, these times represent the final opportunity to transact in creation or redemption units for the twelve months ended December 31, 2020. 0001415311 2020-01-01 2020-12-31 0001415311 2019-01-01 2019-12-31 0001415311 2018-01-01 2018-12-31 0001415311 2020-12-31 0001415311 2019-12-31 0001415311 2021-02-11 0001415311 2018-12-31 0001415311 2017-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-12-31 0001415311 us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2020-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ReceivablesOnOpenFuturesContractsAndUnrealizedAppreciationOnSwapAgreementsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesVixMidTermFuturesEtfMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ReceivablesOnOpenFuturesContractsAndUnrealizedAppreciationOnSwapAgreementsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraGoldMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraSilverMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2020-12-31 0001415311 us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember us-gaap:NondesignatedMember 2020-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraShortEuroMember us-gaap:NondesignatedMember 2020-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraYenMember us-gaap:NondesignatedMember 2020-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortGoldMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesShortEuroMember us-gaap:NondesignatedMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:SocieteGeneraleSaMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:GoldmanSachsAndCoMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:MorganStanleyMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:ProsharesUltraSilverMember 2020-12-31 0001415311 ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:LongMember us-gaap:ForeignExchangeForwardMember ck0001415311:UbsAgMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:UbsAgMember us-gaap:ShortMember ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:UbsAgMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:CitibankNaMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldmanSachsMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:UbsAgMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:CitibankNaMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:GoldmanSachsMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:BloombergMember us-gaap:SwapMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:SocieteGeneraleSaMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:InternationalBasedOnIpathSeriesBSAndP500VixShorttermFuturesEtnInavIndexMember ck0001415311:GoldmanSachsAndCoMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:UbsAgMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:CitibankNaMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:ForwardContractsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:ForwardContractsMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 us-gaap:SwapMember 2020-12-31 0001415311 ck0001415311:EuroFxCurrencyFuturesCmeExpiresMarchTwoThousandAndTwentyOneMember us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember us-gaap:ShortMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:ShortMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyOneMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:ShortMember ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyOneMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresMarchTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:AustralianDollarFxCurrencyFuturesCmeExpiresMarch2021Member ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:ShortMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:SilverFuturesComexExpiresMarchTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortSilverMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:ShortMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresJuneTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:GoldFuturesComexExpiresFebruaryTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortGoldMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresDecemberTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:FutureMember 2020-12-31 0001415311 ck0001415311:NaturalGasNymexExpiresMarchTwoThousandAndTwentyOneMember us-gaap:ShortMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:ShortMember ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:ShortMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:ShortMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:FutureMember 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:ShortMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:SilverFuturesComexExpiresMarchTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresMarchTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresJuneTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:WtiCrudeOilNymexExpiresDecemberTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:NaturalGasNymexExpiresMarchTwoThousandTwentyOneMember ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:FutureMember us-gaap:LongMember 2020-12-31 0001415311 ck0001415311:GoldFuturesComexExpiresFebruaryTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 ck0001415311:VixFuturesCboeExpiresAprilTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:VixFuturesCboeExpiresMayTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:VixFuturesCboeExpiresJulyTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:VixFuturesCboeExpiresJuneTwoThousandAndTwentyOneMember us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember 2020-12-31 0001415311 us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineSixPercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixMidTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineFourPercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixMidTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneThreePercentageDueJanuaryTwentyEightTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroEightEightPercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneTwoPercentageDueFebruaryFourTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineZeroPercentageDueJanuarySevenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroEightFivePercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroSevenThreePercentageDueJanuaryTwentyEightTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroEightFivePercentageDueJanuarySevenTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineOnePercentageDueJanuarySevenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineFourPercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneTwoPercentageDueJanuaryFourTwoThousandAndTwentyOneMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:LongMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:ShortMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember 2020-12-31 0001415311 us-gaap:ShortMember ck0001415311:EuroContractMember ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember us-gaap:ForeignExchangeForwardMember 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortYenMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortEuroMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraEuroMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraSilverMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember ck0001415311:ProsharesShortEuroMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member ck0001415311:ProsharesUltraEuroMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraYenMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-12-31 0001415311 us-gaap:USTreasuryAndGovernmentShorttermDebtSecuritiesMember us-gaap:FairValueInputsLevel1Member 2019-12-31 0001415311 us-gaap:FairValueInputsLevel1Member us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 us-gaap:SwapMember us-gaap:FairValueInputsLevel2Member 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeForwardMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ReceivablesOnOpenFuturesContractsAndUnrealizedAppreciationOnSwapAgreementsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesVixMidTermFuturesEtfMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ReceivablesOnOpenFuturesContractsAndUnrealizedAppreciationOnSwapAgreementsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraGoldMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraSilverMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:CommodityContractMember ck0001415311:ReceivablesOnOpenFuturesContractsUnrealizedAppreciationOnSwapAndOrForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedAppreciationOnForeignCurrencyForwardContractsMember 2019-12-31 0001415311 us-gaap:NondesignatedMember 2019-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraShortEuroMember us-gaap:NondesignatedMember 2019-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraYenMember us-gaap:NondesignatedMember 2019-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:NondesignatedMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 us-gaap:ForeignExchangeContractMember ck0001415311:UnrealizedDepreciationOnForeignCurrencyForwardContractsMember ck0001415311:ProsharesShortEuroMember us-gaap:NondesignatedMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsUnrealizedDepreciationOnSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:PayableOnOpenFuturesContractsAndUnrealizedDepreciationOnSwapAgreementsMember ck0001415311:VolatilityIndexFutureMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:RoyalBankOfCanadaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:SocieteGeneraleSaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:GoldmanSachsAndCoMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:RoyalBankOfCanadaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:SocieteGeneraleSaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:CitibankNaMember us-gaap:SwapMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:RoyalBankOfCanadaMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember ck0001415311:SocieteGeneraleSaMember 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UbsAgMember us-gaap:SwapMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:SocieteGeneraleSaMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:InternationalBasedOnIpathSeriesBSAndP500VixShorttermFuturesEtnInavIndexMember ck0001415311:GoldmanSachsAndCoMember 2019-12-31 0001415311 ck0001415311:GoldmanSachsMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember ck0001415311:UbsAgMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember ck0001415311:CitibankNaMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:UbsAgMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:RoyalBankOfCanadaMember 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:FutureMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:FutureMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:FutureMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:SwapMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember 2019-12-31 0001415311 us-gaap:FutureMember us-gaap:ShortMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:EuroFxCurrencyFuturesCmeExpiresMarchTwoThousandAndTwentyMember us-gaap:ShortMember ck0001415311:ProsharesShortEuroMember us-gaap:FutureMember 2019-12-31 0001415311 ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyMember us-gaap:ShortMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:FutureMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:ShortMember ck0001415311:AustralianDollarFxCurrencyFuturesCmeExpiresMarch2020Member 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:ShortMember ck0001415311:WtiCrudeOilNymexExpiresMarchTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:FutureMember us-gaap:ShortMember ck0001415311:NaturalGasNymexExpiresMarchTwoThousandAndTwentyMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember us-gaap:ShortMember ck0001415311:GoldFuturesComexExpiresFebruaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:FutureMember us-gaap:ShortMember ck0001415311:SilverFuturesComexExpiresMarchTwoThousandAndTwentyMember 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:ShortMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:GoldFuturesComexExpiresFebruaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:SilverFuturesComexExpiresMarchTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresJanuaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresFebruaryTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresMayTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresJuneTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresJulyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:VixFuturesCboeExpiresAprilTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember us-gaap:LongMember ck0001415311:WtiCrudeOilNymexExpiresMarchTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:FutureMember ck0001415311:NaturalGasNymexExpiresMarchTwoThousandTwentyMember us-gaap:LongMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:FutureMember us-gaap:LongMember 2019-12-31 0001415311 us-gaap:LongMember us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroNinePercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveEightSevenPercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortEuroMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortEuroMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixTwoNinePercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveSixFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveSixFivePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:LongMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:ShortMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 srt:MinimumMember ck0001415311:MatchingVIXFundsMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:LeveragedFundMember 2020-01-01 2020-12-31 0001415311 ck0001415311:GearedvixFundsMember 2020-01-01 2020-12-31 0001415311 ck0001415311:MatchingVIXFundsMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:PrivatePlacementMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-01-01 2020-12-31 0001415311 ck0001415311:UltraShortFundMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortGoldMember 2020-01-01 2020-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesShortEuroMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraEuroMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraYenMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortEuroMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortYenMember 2020-01-01 2020-12-31 0001415311 us-gaap:NondesignatedMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:LongMember us-gaap:ForeignExchangeForwardMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 ck0001415311:UbsAgMember us-gaap:ShortMember ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:CitibankNaMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:InternationalBasedOnIpathSeriesBSAndP500VixShorttermFuturesEtnInavIndexMember ck0001415311:GoldmanSachsAndCoMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:UbsAgMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:GoldmanSachsMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:MorganStanleyAndCoInternationalPlcMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:BloombergMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:SocieteGeneraleSaMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:MorganStanleyAndCoInternationalPlcMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:GoldmanSachsMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:CitibankNaMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:UbsAgMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldmanSachsMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:CitibankNaMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember ck0001415311:UbsAgMember ck0001415311:BloombergMember ck0001415311:SilverSubindexMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortYenMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraYenMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraEuroMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:FutureMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:FutureMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 us-gaap:ForeignExchangeForwardMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:AprilTwentyTwoThousandAndTwentyReverseShareSplitMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember ck0001415311:AprilTwentyTwoThousandAndTwentyReverseShareSplitMember 2020-01-01 2020-12-31 0001415311 ck0001415311:MarchNineteenTwentyTwoThousandAndEighteenReverseShareSplitMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 ck0001415311:MarchNineteenTwentyTwoThousandAndEighteenReverseShareSplitMember ck0001415311:ProsharesUltraPro3xShortCrudeOilETFMember 2020-01-01 2020-12-31 0001415311 ck0001415311:SeptemberSeventeenTwentyTwoThousandAndEighteenReverseShareSplitMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:SeptemberSeventeenTwentyTwoThousandAndEighteenReverseShareSplitMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:OptionOnSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineFourPercentageDueJanuarySevenTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneThreePercentageDueJanuaryTwentyEightTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneTwoPercentageDueJanuaryFourTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraSilverMember 2020-01-01 2020-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineOnePercentageDueJanuarySevenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraGoldMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroEightFivePercentageDueJanuarySevenTwoThousandAndTwentyOneMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroSevenThreePercentageDueJanuaryTwentyEightTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-01-01 2020-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineZeroPercentageDueJanuarySevenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroEightEightPercentageDueJanuarySevenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneTwoPercentageDueFebruaryFourTwoThousandAndTwentyOneMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineFourPercentageDueJanuarySevenTwoThousandAndTwentyOneMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointZeroNineSixPercentageDueJanuarySevenTwoThousandAndTwentyOneMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsZeroPointOneOneZeroPercentageDueJanuaryFourteenTwoThousandAndTwentyOneMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-01-01 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2018-01-01 2018-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:VolatilityIndexFutureMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:VolatilityIndexFutureMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:VolatilityIndexFutureMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:VolatilityIndexFutureMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:CommodityContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 us-gaap:NondesignatedMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraShortSilverMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortSilverMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraShortGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortYenMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraEuroMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:FutureMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:ForwardContractsMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 us-gaap:FutureMember 2018-01-01 2018-12-31 0001415311 us-gaap:SwapMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForwardContractsMember 2018-01-01 2018-12-31 0001415311 us-gaap:ForeignExchangeForwardMember 2018-01-01 2018-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2018-01-01 2018-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember ck0001415311:NetRealizedGainLossOnFuturesContractsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsMember ck0001415311:VolatilityIndexFutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 ck0001415311:NetRealizedGainLossOnFuturesContractsSwapAndOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsSwapAndOrForwardAgreementsMember us-gaap:CommodityContractMember us-gaap:NondesignatedMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember us-gaap:ForeignExchangeContractMember ck0001415311:NetRealizedGainLossOnFuturesContractsOrForwardAgreementsChangesInUnrealizedAppreciationDepreciationOnFuturesContractsOrForwardAgreementsMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:NondesignatedMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember us-gaap:ForeignExchangeForwardMember ck0001415311:EuroContractMember us-gaap:ShortMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:ShortMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraYenMember ck0001415311:YenContractMember us-gaap:LongMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraEuroMember ck0001415311:EuroContractMember us-gaap:LongMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:RoyalBankOfCanadaMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember us-gaap:SwapMember ck0001415311:BloombergMember ck0001415311:GoldSubindexMember ck0001415311:CitibankNaMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember ck0001415311:CitibankNaMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember us-gaap:SwapMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 ck0001415311:GoldmanSachsMember ck0001415311:SilverSubindexMember ck0001415311:BloombergMember ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:GoldmanSachsAndCoMember us-gaap:SwapMember ck0001415311:InternationalBasedOnIpathSeriesBSAndP500VixShorttermFuturesEtnInavIndexMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember ck0001415311:SocieteGeneraleSaMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:CitibankNaMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:GoldmanSachsMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember ck0001415311:GoldSubindexMember ck0001415311:BloombergMember ck0001415311:UbsAgMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:UbsAgMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:SocieteGeneraleSaMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:RoyalBankOfCanadaMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:GoldmanSachsMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraBloombergCrudeOilMember ck0001415311:CitibankNaMember ck0001415311:WTICrudeOilSubindexMember ck0001415311:BloombergMember 2019-01-01 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:CitibankNaMember ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:GoldmanSachsMember ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 ck0001415311:BloombergMember ck0001415311:SilverSubindexMember ck0001415311:UbsAgMember ck0001415311:ProsharesUltraShortSilverMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember us-gaap:ForwardContractsMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:FutureMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember us-gaap:ForeignExchangeForwardMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:FutureMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember us-gaap:ForeignExchangeForwardMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:FutureMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:FutureMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForwardContractsMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:FutureMember 2019-01-01 2019-12-31 0001415311 us-gaap:SwapMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForwardContractsMember 2019-01-01 2019-12-31 0001415311 us-gaap:ForeignExchangeForwardMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraBloombergNaturalGasMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroNinePercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveEightSevenPercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-01-01 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraYenMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraSilverMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraSilverMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortYenMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveSixFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveSixFivePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortSilverMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortGoldMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortEuroMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixTwoNinePercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixZeroSevenPercentageDueJanuaryNineTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneFourPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveOneNinePercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFiveFourSevenPercentageDueJanuaryThirtyTwoThousandAndTwentyMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointFourSixTwoPercentageDueFebruarySixTwoThousandAndTwentyMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 us-gaap:USGovernmentAgenciesShorttermDebtSecuritiesMember ck0001415311:UnitedStatesTreasuryBillsOnePointSixOneEightPercentageDueFebruaryThirteenTwoThousandAndTwentyMember ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-01-01 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraEuroMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraGoldMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraSilverMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraYenMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2020-06-30 0001415311 ck0001415311:ProsharesUltraShortYenMember 2020-06-30 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-06-30 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-06-30 0001415311 ck0001415311:ProsharesShortEuroMember 2020-06-30 0001415311 ck0001415311:ProsharesShortEuroMember 2021-02-11 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraEuroMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraGoldMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraSilverMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraYenMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraShortYenMember 2021-02-11 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2021-02-11 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2021-02-11 0001415311 ck0001415311:ProsharesUltraSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2019-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2020-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2020-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2017-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2017-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2017-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2017-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2017-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2018-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-12-31 0001415311 ck0001415311:ProsharesVixMidTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortGoldMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortSilverMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortYenMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergCrudeOilMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortBloombergNaturalGasMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraYenMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraShortAustralianDollarMember 2018-12-31 0001415311 ck0001415311:ProsharesShortEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergCrudeOilMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraBloombergNaturalGasMember 2018-12-31 0001415311 ck0001415311:ProsharesShortVixShortTermFuturesEtfMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraGoldMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraSilverMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraEuroMember 2018-12-31 0001415311 ck0001415311:ProsharesUltraProThreexCrudeOilEtfMember 2019-12-31 0001415311 ck0001415311:ProsharesUltraProThreexShortCrudeOilEtfMember 2019-12-31 iso4217:USD xbrli:shares xbrli:pure utr:Month utr:Day iso4217:EUR iso4217:JPY iso4217:USD xbrli:shares ck0001415311:Trust iso4217:USD ck0001415311:EquityUnit ck0001415311:Contract
 
 
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
FORM 10-K
 
 
 
☒
Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2020.
or
 
☐
Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from
                    
to
                    
.
Commission file number: 001-34200
 
 
PROSHARES TRUST II