Label	Element	Value
Prospectus [Line Items]	rr_ProspectusLineItems
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Sep. 30, 2019
Entity Registrant Name	dei_EntityRegistrantName	ETF Managers Trust
Entity Central Index Key	dei_EntityCentralIndexKey	0001467831
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Mar. 27, 2020
Document Effective Date	dei_DocumentEffectiveDate	Mar. 27, 2020
Prospectus Date	rr_ProspectusDate	Mar. 27, 2020
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A
Supplement to Prospectus [Text Block]	rr_SupplementToProspectusTextBlock	Supplement dated March 27, 2020 to the Prospectus each dated January 31, 2020 of the ETFMG Prime Junior Silver Miners ETF (SILJ) ETFMG Prime Cyber Security ETF (HACK) ETFMG Prime Mobile Payments ETF (IPAY) ETFMG Alternative Harvest ETF (MJ) BlueStar Israel Technology ETF (ITEQ) Etho Climate Leadership U.S. ETF (ETHO) ETFMG Video Game Tech ETF (GAMR) AI Powered Equity ETF (AIEQ) Prospectus dated January 31, 2020, as previously supplemented, of the ETFMG Drone Economy Strategy ETF (IFLY) Prospectus dated February 10, 2020 of the ETFMG Travel Tech ETF (AWAY) Prospectus dated June 24, 2019, as previously supplemented, of the ETFMG Sit Ultra Short ETF (VALT) (each, a “Fund”, and collectively, the “Funds”) Effective immediately, for each Fund except AIEQ and VALT, the following disclosure is added to the "Principal Investment Strategies" section - The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule. Effective immediately, for each Fund except AIEQ and VALT, the following disclosure is added to the "Principal Risks - Passive Investment Risk" section - Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Effective immediately, for each Fund, the following disclosure is added to the "Principal Risks" section - Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Effective immediately, for each Fund except VALT, the following disclosure is added to the "Principal Risks - Equity Mark Risk" - Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.
Supplement Closing [Text Block]	ck0001467831_SupplementClosingTextBlock	Please retain this Supplement with your Summary Prospectus and Prospectus.
ETFMG Prime Junior Silver Miners ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Prime Junior Silver Miners ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
ETFMG Prime Junior Silver Miners ETF \| ETFMG Prime Junior Silver Miners ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	SILJ
ETFMG Prime Cyber Security ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Prime Cyber Security ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.
ETFMG Prime Cyber Security ETF \| ETFMG Prime Cyber Security ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	HACK
ETFMG Prime Mobile Payments ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Prime Mobile Payments ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
ETFMG Prime Mobile Payments ETF \| ETFMG Prime Mobile Payments ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	IPAY
ETFMG Alternative Harvest ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Alternative Harvest ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
ETFMG Alternative Harvest ETF \| ETFMG Alternative Harvest ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	MJ
BlueStar Israel Technology ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	BlueStar Israel Technology ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
BlueStar Israel Technology ETF \| BlueStar Israel Technology ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	ITEQ
Etho Climate Leadership U.S. ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	Etho Climate Leadership U.S. ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.
Etho Climate Leadership U.S. ETF \| Etho Climate Leadership U.S. ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	ETHO
ETFMG Video Game Tech ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Video Game Tech ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.
ETFMG Video Game Tech ETF \| ETFMG Video Game Tech ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	GAMR
AI Powered Equity ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	AI Powered Equity ETF
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.
AI Powered Equity ETF \| AI Powered Equity ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	AIEQ
ETFMG Drone Economy Strategy ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Drone Economy Strategy ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments. Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.
ETFMG Drone Economy Strategy ETF \| ETFMG Drone Economy Strategy ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	IFLY
ETFMG Travel Tech ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Travel Tech ETF
Strategy [Heading]	rr_StrategyHeading	Principal Investment Strategies
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline. Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV. Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
ETFMG Travel Tech ETF \| ETFMG Travel Tech ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	AWAY
ETFMG Sit Ultra Short ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Risk/Return [Heading]	rr_RiskReturnHeading	ETFMG Sit Ultra Short ETF
Risk [Heading]	rr_RiskHeading	Principal Risks
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.
ETFMG Sit Ultra Short ETF \| ETFMG Sit Ultra Short ETF
Prospectus [Line Items]	rr_ProspectusLineItems
Trading Symbol	dei_TradingSymbol	VALT

rr_ProspectusLineItems

dei_DocumentPeriodEndDate

Sep. 30, 2019

Entity Central Index Key

dei_EntityCentralIndexKey

0001467831

Document Creation Date

dei_DocumentCreationDate

Mar. 27, 2020

Prospectus Date

rr_ProspectusDate

Mar. 27, 2020

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement dated March 27, 2020 to the

Prospectus

each dated January 31, 2020 of the

ETFMG Prime Junior Silver Miners ETF (SILJ)

ETFMG Prime Cyber Security ETF (HACK)

ETFMG Prime Mobile Payments ETF (IPAY)

ETFMG Alternative Harvest ETF (MJ)

BlueStar Israel Technology ETF (ITEQ)

Etho Climate Leadership U.S. ETF (ETHO)

ETFMG Video Game Tech ETF (GAMR)

AI Powered Equity ETF (AIEQ)

Prospectus

dated January 31, 2020, as previously supplemented, of the

ETFMG Drone Economy Strategy ETF (IFLY)

Prospectus

dated February 10, 2020 of the

ETFMG Travel Tech ETF (AWAY)

Prospectus

dated June 24, 2019, as previously supplemented, of the

ETFMG Sit Ultra Short ETF (VALT)

(each, a “Fund”, and collectively, the “Funds”)

Effective immediately, for each Fund except AIEQ and VALT, the following disclosure is added to the "Principal Investment Strategies" section -

The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Effective immediately, for each Fund except AIEQ and VALT, the following disclosure is added to the "Principal Risks - Passive Investment Risk" section -

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Effective immediately, for each Fund, the following disclosure is added to the "Principal Risks" section -

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Effective immediately, for each Fund except VALT, the following disclosure is added to the "Principal Risks - Equity Mark Risk" -

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Risk/Return [Heading]

rr_RiskReturnHeading

ETFMG Prime Junior Silver Miners ETF

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

ETFMG Prime Cyber Security ETF

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Prospectus [Line Items]

rr_ProspectusLineItems

Risk/Return [Heading]

rr_RiskReturnHeading

ETFMG Prime Mobile Payments ETF

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

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Risk/Return [Heading]

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ETFMG Alternative Harvest ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

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Risk/Return [Heading]

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BlueStar Israel Technology ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

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Risk/Return [Heading]

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Etho Climate Leadership U.S. ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Prospectus [Line Items]

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Risk/Return [Heading]

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ETFMG Video Game Tech ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Prospectus [Line Items]

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Risk/Return [Heading]

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AI Powered Equity ETF

Risk Narrative [Text Block]

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Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Prospectus [Line Items]

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Risk/Return [Heading]

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ETFMG Drone Economy Strategy ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Prospectus [Line Items]

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Risk/Return [Heading]

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ETFMG Travel Tech ETF

Strategy Narrative [Text Block]

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The Fund rebalances its portfolio in accordance with its Index, and, therefore, any changes to the Index’s rebalance schedule will result in corresponding changes to the Fund’s rebalance schedule.

Risk Narrative [Text Block]

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Unlike with an actively managed fund, the Adviser does not use techniques or defensive strategies designed to lessen the effects of market volatility or to reduce the impact of periods of market decline. This means that, based on market and economic conditions, the Fund’s performance could be lower than other types of funds that may actively shift their portfolio assets to take advantage of market opportunities or to lessen the impact of a market decline.

Additionally, natural or environmental disasters, widespread disease or other public health issues, war, acts of terrorism or other events could result in increased premiums or discounts to the Fund’s NAV.

Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

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Risk/Return [Heading]

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ETFMG Sit Ultra Short ETF

Risk Narrative [Text Block]

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Natural Disaster/Epidemic Risk. Natural or environmental disasters, such as earthquakes, fires, floods, hurricanes, tsunamis and other severe weather-related phenomena generally, and widespread disease, including pandemics and epidemics, have been and may be highly disruptive to economies and markets, adversely impacting individual companies, sectors, industries, markets, currencies, interest and inflation rates, credit ratings, investor sentiment, and other factors affecting the value of the Fund’s investments. Given the increasing interdependence among global economies and markets, conditions in one country, market, or region are increasingly likely to adversely affect markets, issuers, and/or foreign exchange rates in other countries, including the U.S. Any such events could have a significant adverse impact on the value of the Fund’s investments.

Prospectus [Line Items]

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