Schedules of Investments - USD ($)		Dec. 31, 2019		Dec. 31, 2018
U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Total U.S. Treasury Obligations		$ 23,583,730		$ 4,495,280
Total Investments		23,583,730		4,495,280
U.S. Equity Ex-Dividend Fund-Series 2027
U.S. Treasury Notes
Total U.S. Treasury Obligations		25,837,538
Total Investments		25,837,538		11,248,789
6.125%, 11/15/2027 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,919,000	[1]	560,000	[2]
Total U.S. Treasury Obligations		3,834,372	[1]	712,202	[2]
2.250%, 12/31/2023 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,781,000	[1]	488,000	[2]
Total U.S. Treasury Obligations		2,842,559	[1]	481,904	[2]
2.250%, 11/15/2024 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,911,000	[1]	512,000	[2]
Total U.S. Treasury Obligations		2,985,258	[1]	503,381	[2]
2.250%, 11/15/2025 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		3,012,000	[1]	528,000	[2]
Total U.S. Treasury Obligations		3,091,577	[1]	516,723	[2]
2.125%, 12/31/2022 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,653,000	[1]	472,000	[2]
Total U.S. Treasury Obligations		2,692,434	[1]	465,484	[2]
2.000%, 12/31/2021 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,538,000	[1]	456,000	[2]
Total U.S. Treasury Obligations		2,558,030	[1]	449,856	[2]
2.000%, 11/15/2026 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		3,111,000	[1]	536,000	[2]
Total U.S. Treasury Obligations		3,143,951	[1]	512,184	[2]
1.750%, 12/31/2020 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount		2,433,000	[1]	440,000	[2]
Total U.S. Treasury Obligations		2,435,549	[1]	433,729	[2]
1.537%, 05/28/2020 | U.S. Equity Ex-Dividend Fund-Series 2027
U.S. Treasury Notes
Principal Amount	[3],[4]	26,000,000
Total U.S. Treasury Obligations	[3],[4]	$ 25,837,538
1.625%, 12/31/2019 | U.S. Equity Cumulative Dividends Fund-Series 2027
U.S. Treasury Notes
Principal Amount				424,000
Total U.S. Treasury Obligations				419,817
2.414%, 4/11/2019 | U.S. Equity Ex-Dividend Fund-Series 2027
U.S. Treasury Notes
Principal Amount	[5]			11,325,000
Total U.S. Treasury Obligations	[5]			11,248,789
Total Investments				$ 11,248,789

[1] Security, or a portion of, has been pledged as collateral for the trading of futures contracts. The market value of the securities pledged as collateral for the period ended December 31, 2019 was $2,728,628 or 11.2% of net assets.

[2] Security, or a portion of these securities, has been pledged as collateral for the trading of futures contracts. The market value of the securities pledged as collateral was $513,627 or 11.3% of net assets.

[3] Security, or a portion of, has been pledged as collateral for the trading of futures contracts. The market value of the securities pledged as collateral for the period ended December 31, 2019 was $7,254,010 or 26.9% of net assets.

[4] Zero coupon security. The rate reported on the Schedule of Investments is the effective yield at time of purchase.

[5] Zero coupon security. The rate reported on the Schedule of Investments is the effective yield at time of purchase. A portion of this security is pledged as collateral for the trading of futures contracts. The market value of the securities pledged as collateral was $3,059,980 or 24.5% of net assets.