iShares S&P GSCI Commodity-Indexed Trust (GSG) 10-K 23 Feb 23 2022 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 31, 2023	Jun. 30, 2022
Document Information [Line Items]
Entity Central Index Key	0001332174
Entity Registrant Name	iShares S&P GSCI Commodity-Indexed Trust
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	001-32947
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-6573369
Entity Address, Address Line One	400 Howard Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94105
City Area Code	415
Local Phone Number	670-2000
Title of 12(b) Security	Shares
Trading Symbol	GSG
Security Exchange Name	NYSEArca
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,661,516,216
Entity Common Stock, Shares Outstanding		57,200,000
Auditor Firm ID	238
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Philadelphia, Pennsylvania

Statements of Assets and Liabil

Statements of Assets and Liabilities - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Assets
Cash		$ 5,181,064	$ 41,625,574
Short-term investments	[1]	1,100,309,661	1,412,803,235
Short-term investments held at broker (restricted)	[2]	102,037,820	85,581,308
Receivable for variation margin on open futures contracts (Note 9)		14,408,722	0
Total Assets		1,221,937,267	1,540,010,117
Liabilities
Sponsor’s fees payable		827,410	890,974
Payable for investment securities purchased		0	89,994,437
Payable for variation margin on open futures contracts (Note 9)		0	17,314,591
Total Liabilities		827,410	108,200,002
Commitments and contingent liabilities (Note 7)
Net Assets		$ 1,221,109,857	$ 1,431,810,115	[3]
Shares issued and outstanding (in shares)	[4]	57,550,000	83,750,000
Net asset value per Share (Note 2G) (in dollars per share)		$ 21.22	$ 17.10
[1]Cost of short-term investments: $1,099,953,044 and $1,412,781,989, respectively.[2]Cost of short-term investments held at broker (restricted): $101,996,781 and $85,580,222, respectively.[3]A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D.[4]No par value, unlimited amount authorized.

Statements of Assets and Liab_2

Statements of Assets and Liabilities (Parentheticals) - USD ($) $ / shares in Thousands	Dec. 31, 2022	Dec. 31, 2021
Cost of short-term investments	$ 1,099,953,044	$ 1,412,781,989
Cost of short-term investments held at broker (restricted)	$ 101,996,781	$ 85,580,222
Shares, outstanding (in shares)	57,550,000	83,750,000
Shares, par value (in dollars per share)	$ 0	$ 0

Statements of Operations

Statements of Operations - USD ($)		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investment Income
Interest		$ 22,306,078	$ 426,034	$ 3,742,855
Total investment income		22,306,078	426,034	3,742,855
Expenses
Sponsor’s fees		13,482,545	9,465,137	5,005,767
Brokerage commissions and fees		1,299,610	1,346,112	1,013,439
Total expenses		14,782,155	10,811,249	6,019,206
Net investment income (loss)		7,523,923	(10,385,215)	(2,276,351)
Net Realized and Unrealized Gain (Loss)
Short-term investments		(59,481)	1,072	62,112
Futures contracts		359,651,081	381,834,976	(204,137,367)
Net realized gain (loss)		359,591,600	381,836,048	(204,075,255)
Net change in unrealized appreciation/depreciation on:
Short-term investments		375,322	3,775	(81,566)
Futures contracts		23,317,777	(5,445,651)	22,817,921
Net change in unrealized appreciation/depreciation		23,693,099	(5,441,876)	22,736,355
Net realized and unrealized gain (loss)		383,284,699	376,394,172	(181,338,900)
Net increase (decrease) in net assets resulting from operations		$ 390,808,622	$ 366,008,957	$ (183,615,251)
Net increase (decrease) in net assets per Share (in dollars per share)	[1]	$ 4.82	$ 4.51	$ (3.09)
[1]Net increase (decrease) in net assets per Share based on average shares outstanding during the year.

Statements of Changes in Net As

Statements of Changes in Net Assets - USD ($)	12 Months Ended
	Dec. 31, 2022		Dec. 31, 2021		Dec. 31, 2020
Net Assets, Beginning of Year	$ 1,431,810,115	[1]	$ 827,346,620		$ 775,343,105
Operations:
Net investment income (loss)	7,523,923		(10,385,215)		(2,276,351)
Net realized gain (loss)	359,591,600		381,836,048		(204,075,255)
Net change in unrealized appreciation/depreciation	23,693,099		(5,441,876)		22,736,355
Net increase (decrease) in net assets resulting from operations	390,808,622		366,008,957		(183,615,251)
Capital Share Transactions:
Contributions for Shares issued	477,233,516		522,133,469		366,906,034
Distributions for Shares redeemed	(1,078,742,396)		(283,678,931)		(131,287,268)
Net increase (decrease) in net assets from capital share transactions	(601,508,880)		238,454,538		235,618,766
Increase (decrease) in net assets	(210,700,258)		604,463,495		52,003,515
Net Assets, End of Year	$ 1,221,109,857		$ 1,431,810,115	[1]	$ 827,346,620
Shares issued and redeemed
Shares issued (in shares)	22,900,000		34,750,000		31,850,000
Shares redeemed (in shares)	(49,100,000)		(18,250,000)		(12,350,000)
Net increase (decrease) in Shares issued and outstanding (in shares)	(26,200,000)		16,500,000		19,500,000
[1]A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D.

Statements of Cash Flows

Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities
Net increase (decrease) in net assets resulting from operations	$ 390,808,622	$ 366,008,957	$ (183,615,251)
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Purchases of short-term investments	(12,149,834,676)	(8,969,201,919)	(3,958,461,167)
Sales/maturities of short-term investments	12,468,482,968	8,286,216,364	3,897,733,626
Accretion of discount	(22,295,389)	(426,034)	(3,740,655)
Net realized (gain) loss on short-term investments	59,481	(1,072)	(62,112)
Net change in unrealized appreciation/depreciation on short-term investments	(375,322)	(3,775)	81,566
Change in operating assets and liabilities:
Receivable for variation margin on open futures contracts	(14,408,722)	3,335,487	(3,335,487)
Payable for variation margin on open futures contracts	(17,314,591)	17,314,591	(5,952,581)
Payable for investment securities purchased	(89,994,437)	89,994,437	0
Sponsor’s fees payable	(63,564)	383,766	41,371
Brokerage commissions and fees payable	0	0	0
Net cash provided by (used in) operating activities	565,064,370	(206,379,198)	(257,310,690)
Cash Flows from Financing Activities
Contributions for Shares issued	477,233,516	522,133,469	366,906,034
Distributions for Shares redeemed	(1,078,742,396)	(294,751,228)	(120,214,971)
Net cash provided by (used in) financing activities	(601,508,880)	227,382,241	246,691,063
Net increase (decrease) in cash and cash equivalents	(36,444,510)	21,003,043	(10,619,627)
Cash
Beginning of year, Unrestricted — cash	41,625,574	20,622,531	31,242,158
End of year, Unrestricted — cash	$ 5,181,064	$ 41,625,574	$ 20,622,531

Schedules of Investments

Schedules of Investments	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Investment Holdings, Schedule of Investments [Text Block]	Commodity-Indexed Trust Schedules of Investments At December 31, 2022 2021 December 31, 2022 Security Description Face Amount Fair Value U.S. Treasury bills (a)(b) 3.05% 3.89% 1/03/23 $ 94,000,000 $ 94,000,000 3.37% 3.87% 1/05/23 120,000,000 119,975,767 3.81% 4.01% 1/10/23 80,000,000 79,943,727 3.81% 1/12/23 35,000,000 34,969,615 3.80% 4.10% 1/17/23 170,000,000 169,756,793 3.56% 3.86% 1/19/23 71,000,000 70,885,769 3.68% 4.19% 1/24/23 255,000,000 254,428,687 3.72% 3.96% 1/26/23 68,000,000 67,831,414 4.09% 1/31/23 60,000,000 59,816,134 3.99% 4.01% 2/07/23 81,000,000 80,692,100 4.04% 2/14/23 6,000,000 5,971,795 4.24% 2/16/23 45,000,000 44,776,219 4.22% 2/21/23 60,000,000 59,660,552 3.97% 2/23/23 60,000,000 59,638,909 Total U.S. Treasury bills (Cost: $ 1,201,949,825 1,202,347,481 Total Investments – 98.46% 1,202,347,481 Other Assets, Less Liabilities – 1.54% 18,762,376 Net Assets – 100.00% $ 1,221,109,857 (a) A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D. (b) Rates shown are discount rates paid at the time of purchase. As of December 31, 2022, Number of Contracts Expiration Date Current Notional Amount Net Unrealized Appreciation (Depreciation) 38,848 March 15, 2023 $ 1,215,724,851 60,324,698 December 31, 2021 Security Description Face Amount Fair Value U.S. Treasury bills (a)(b) 0.03% 0.04% 1/04/22 $ 100,000,000 $ 100,000,084 0.03% 0.04% 1/06/22 84,000,000 83,999,971 0.03% 1/11/22 53,000,000 52,999,941 0.04% 0.05% 1/25/22 20,000,000 19,999,771 0.03% 0.06% 2/01/22 74,000,000 73,998,510 0.05% 2/03/22 20,000,000 19,999,483 0.03% 0.05% 2/08/22 105,000,000 104,996,981 0.05% 2/10/22 89,000,000 88,996,946 0.03% 0.05% 2/15/22 120,000,000 119,996,058 0.03% 0.05% 2/17/22 121,000,000 120,995,463 0.03% 0.04% 2/22/22 76,000,000 75,998,152 0.04% 0.05% 2/24/22 135,450,000 135,444,620 0.05% 0.06% 3/1/22 120,000,000 119,993,349 0.04% 0.06% 3/03/22 127,000,000 126,990,114 0.05% 3/08/22 66,000,000 65,994,133 0.04% 3/10/22 35,000,000 34,997,273 0.05% 3/15/22 58,000,000 57,995,081 0.06% 3/17/22 35,000,000 34,996,079 0.08% 3/24/22 60,000,000 59,992,534 Total U.S. Treasury bills (Cost: $ 1,498,362,211 1,498,384,543 Total Investments – 104.65% 1,498,384,543 Other Assets, Less Liabilities – (4.65)% (66,574,428 ) Net Assets – 100.00% $ 1,431,810,115 (a) A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D. (b) Rates shown are discount rates paid at the time of purchase. As of December 31, 2021, Number of Contracts Expiration Date Current Notional Amount Net Unrealized Appreciation (Depreciation) 56,436 March 15, 2022 $ 1,430,714,680 37,006,921

Note 1 - Organization

Note 1 - Organization	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	1 The iShares S&P GSCI™ Commodity-Indexed Trust (the “Trust”) is a Delaware statutory trust that was organized under the laws of the State of Delaware on July 7, 2006 July 10, 2006. BlackRock Institutional Trust Company, N.A. is the trustee of the Trust (the “Trustee”). The Trust is governed by the Third Amended and Restated Trust Agreement, dated as of December 31, 2013 ( The Trust holds long positions in exchange-traded index futures contracts of various expirations (“Index Futures”) on the S&P GSCI™ Excess Return Index (“S&P GSCI‑ER”). In order to collateralize its Index Futures positions and to reflect the U.S. Treasury component of the S&P GSCI™ Total Return Index (the “Index”), the Trust also holds “Collateral Assets,” which consist of cash, U.S. Treasury securities or other short-term securities and similar securities that are eligible as margin deposits for those Index Futures positions. The Index Futures held by the Trust are listed on the Chicago Mercantile Exchange (the “CME”). The Trust seeks to track the results of a fully collateralized investment in futures contracts on an index composed of a diversified group of commodity futures. The Trust seeks to track the investment returns of the Index before payment of the Trust’s expenses and liabilities. The Trust is a commodity pool, as defined in the Commodity Exchange Act (the “CEA”) and the applicable regulations of the Commodity Futures Trading Commission (the “CFTC”), and is operated by the Sponsor, a commodity pool operator registered with the CFTC. The Sponsor is an indirect subsidiary of BlackRock, Inc. (“BlackRock”). BlackRock Fund Advisors (the “Advisor”), an indirect subsidiary of BlackRock, serves as the commodity trading advisor of the Trust and is registered with the CFTC. The Trust qualifies as an investment company solely for accounting purposes and follows the accounting and reporting guidance under the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification Topic 946, not not 1940,

Note 2 - Significant Accounting

Note 2 - Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2 A. Basis of Accounting The following significant accounting policies are consistently followed by the Trust in the preparation of its financial statements in conformity with U.S. GAAP. The preparation of financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Certain statements and captions in the financial statements for the prior year have been changed to conform to the current financial statement presentation. B. Investment in Index Futures The Trust seeks to track the results of a fully collateralized investment in futures contracts on an index composed of a diversified group of commodity futures, including energy commodities, precious and industrial metal commodities, agricultural commodities and livestock commodities. The Trust seeks to track the investment returns of the Index before payment of the Trust’s expenses and liabilities. The assets of the Trust consist of Index Futures and cash or other Collateral Assets used to satisfy applicable margin requirements for those Index Futures positions. Index Futures are exchange-traded index futures contracts on the S&P GSCI-ER, and are expected to include contracts of different terms and expirations. The Trust is expected to roll out of existing positions in Index Futures and establish new positions in Index Futures on an ongoing basis. When establishing positions in Index Futures, the Trust is required to deposit cash or other Collateral Assets with the broker as “initial margin.” On a daily basis, the Trust is obligated to pay, or entitled to receive, cash in an amount equal to the change in the daily settlement level of its Index Futures positions. Such payments or receipts are known as variation margin. Variation margin is recorded as unrealized appreciation (depreciation) and, if any, shown as variation margin receivable (or payable) on futures contracts in the Statements of Assets and Liabilities. When an Index Futures contract is closed, the Trust records a realized gain or loss based on the difference between the value of the Index Futures contract at the time it was opened and the value at the time it was closed. Index Futures are derivative instruments valued at fair value, which the Trustee has determined to be that day’s announced settlement price on the CME or any such other futures exchange listing Index Futures (the “Exchange”). If there is no not For futures contracts, counterparty credit risk is mitigated because futures contracts are exchange-traded and the exchange’s clearing house acts as central counterparty to all exchange-traded futures contracts (although customers continue to have credit exposure to the clearing member who holds their account). Please refer to Note 9 C. Cash The Trust considers cash as currencies deposited in one D. Short-Term Investments Short-term investments on the Statements of Assets and Liabilities consist principally of short-term fixed income securities with original maturities of one As of December 31, 2022 December 31, 2021, E. Securities Transactions and Income Recognition Securities transactions are accounted for on the trade date. Realized gains and losses on investment transactions are determined using the specific identification method. Interest income, including amortization and accretion of premiums and discounts on debt securities, is recognized daily on an accrual basis. F. Income Taxes The Trust is treated as a partnership for federal, state and local income tax purposes. No not The Sponsor has analyzed the tax positions as of December 31, 2022, not G. Calculation of Net Asset Value The net asset value of the Trust on any given day is obtained by subtracting the Trust’s accrued expenses and other liabilities on that day from the value of ( 1 2 3 4:00 4:00 H. Distributions Interest and distributions received by the Trust on its assets may no

Note 3 - Offering of the Shares

Note 3 - Offering of the Shares	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	3 Shares are issued and redeemed continuously in one may not may 2:40 one It is possible that, from time to time, BlackRock and/or funds or other accounts managed by the Trustee or an affiliate (collectively, “Affiliates”) may

Note 4 - Trust Expenses

Note 4 - Trust Expenses	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Expenses [Text Block]	4 The Trust is responsible for paying any applicable brokerage commissions and similar transaction fees out of its assets in connection with the roll of Index Futures held by the Trust. These expenses are recorded as brokerage commissions and fees in the Statements of Operations as incurred. The Sponsor pays the amounts that would otherwise be considered the ordinary operating expenses, if any, of the Trust. In return, the Sponsor receives a fee from the Trust that accrues daily and is payable monthly in arrears at an annualized rate equal to 0.75% of the net asset value of the Trust, as calculated before deducting fees and expenses based on the value of the Trust’s assets. The Sponsor has agreed under the Trust Agreement to pay the following administrative, operational and marketing expenses: ( 1 2 3 4 5 6 7 8 March 31, 2022 may not

Note 5 - Related Parties

Note 5 - Related Parties	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	5 The Sponsor, the Trustee and the Advisor are considered to be related parties to the Trust. The Trustee’s and Advisor’s fees are paid by the Sponsor and are not

Note 6 - Indemnification

Note 6 - Indemnification	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Indemnification [Text Block]	6 The Trust Agreement provides that the Trustee shall indemnify the Sponsor, its directors, employees, delegees and agents against, and hold each of them harmless from, any loss, liability, claim, cost, expense or judgment of any kind whatsoever (including reasonable fees and expenses of counsel) (i) caused by the negligence or bad faith of the Trustee or (ii) arising out of any information furnished in writing to the Sponsor by the Trustee expressly for use in the registration statement, or any amendment thereto or periodic report, filed with the SEC relating to the Shares that is not The Trust Agreement provides that the Sponsor and its shareholders, directors, officers, employees, affiliates (as such term is defined under the Securities Act of 1933, 1 2 The investment advisory agreement (the “Advisory Agreement”) between the Trust and the Advisor provides that the Advisor and its shareholders, directors, officers, employees, affiliates (as such term is defined under the Securities Act of 1933, 1 2

Note 7 - Commitments and Contin

Note 7 - Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	7 In the normal course of business, the Trust may may not

Note 8 - Financial Highlights

Note 8 - Financial Highlights	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Financial Highlights [Text Block]	8 The following financial highlights relate to investment performance and operations for a Share outstanding for the years ended December 31, 2022, 2021 2020. December 31, 2022 2021 2020 Net asset value per Share, beginning of year $ 17.10 $ 12.30 $ 16.24 Net investment income (loss) (a) 0.09 (0.13 ) (0.04 ) Net realized and unrealized gain (loss) (b) 4.03 4.93 (3.90 ) Net increase (decrease) in net assets from operations 4.12 4.80 (3.94 ) Net asset value per Share, end of year $ 21.22 $ 17.10 $ 12.30 Total return, at net asset value (c) 24.09 % 39.02 % (24.26 )% Ratio to average net assets: Net investment income (loss) 0.42 % (0.82 )% (0.34 )% Expenses 0.82 % 0.86 % 0.90 % (a) Based on average Shares outstanding during the year. (b) The amounts reported for a Share outstanding may not (c) Based on the change in net asset value of a Share during the year.

Note 9 - Investing in Index Fut

Note 9 - Investing in Index Futures	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	9 Substantially all of the Trust’s assets are invested in Index Futures. The Index Futures’ settlement value at expiration is based on the value of the S&P GSCI-ER at that time. Therefore, the value of the Trust will fluctuate based upon the value of the S&P GSCI-ER and the prices of futures contracts and commodities underlying the S&P GSCI-ER. The commodities markets have historically been extremely volatile. For the year ended December 31, 2022 December 31, 2021, The following table shows the variation margin on open futures contracts, by risk exposure category, on the Statements of Assets and Liabilities as of December 31, 2022 December 31, 2021: Asset Derivatives Fair Value Liability Derivatives Fair Value December 31, 2022 Commodity contracts Receivable for variation margin on open futures contracts $ 14,408,722 Payable for variation margin on open futures contracts $ — December 31, 2021 Commodity contracts Receivable for variation margin on open futures contracts $ — Payable for variation margin on open futures contracts $ 17,314,591 The following table shows the effect of the open futures contracts, by risk exposure category, on the Statements of Operations for the years ended December 31, 2022, 2021 2020: Statements of Operations Location Net Realized Gain (Loss) Net Change in Unrealized Appreciation/Depreciation December 31, 2022 Commodity contracts Net realized gain (loss) from futures contracts $ 359,651,081 $ — Net change in unrealized appreciation/depreciation on futures contracts — 23,317,777 December 31, 2021 Commodity contracts Net realized gain (loss) from futures contracts $ 381,834,976 $ — Net change in unrealized appreciation/depreciation on futures contracts — (5,445,651 ) December 31, 2020 Commodity contracts Net realized gain (loss) from futures contracts $ (204,137,367 ) $ — Net change in unrealized appreciation/depreciation on futures contracts — 22,817,921

Note 10 - Investment Valuation

Note 10 - Investment Valuation	12 Months Ended
	Dec. 31, 2022
Notes to Financial Statements
Fair Value Disclosures [Text Block]	10 FASB Accounting Standards Codification Topic 820, Investments in Index Futures are measured at fair value on the basis of that day’s settlement price for Index Futures as announced by the applicable Exchange. If there is no U.S. Treasury bills are valued at the last available bid price received from independent pricing services. In determining the value of a fixed income investment, pricing services may Various inputs are used in determining the fair value of financial instruments. Inputs may may three three Level 1 Unadjusted quoted prices in active markets for identical assets or liabilities; Level 2 Inputs other than quoted prices included within Level 1 not Level 3 Unobservable inputs that are unobservable for the asset or liability, including the Trust’s assumptions used in determining the fair value of investments. Fair value pricing could result in a difference between the prices used to calculate the Trust’s net asset value and the prices used by the Trust’s underlying index, which in turn could result in a difference between the Trust’s performance and the performance of the Trust’s underlying index. The following table summarizes the value of each of the Trust’s investments by the fair value hierarchy levels as of December 31, 2022 December 31, 2021: Level 1 Level 2 Level 3 Total December 31, 2022 Futures contracts (a) $ 60,324,698 $ — $ — $ 60,324,698 U.S. Treasury bills — 1,202,347,481 — 1,202,347,481 December 31, 2021 Futures contracts (a) $ 37,006,921 $ — $ — $ 37,006,921 U.S. Treasury bills — 1,498,384,543 — 1,498,384,543 (a) Shown at the unrealized appreciation (depreciation) on the contracts.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	A. Basis of Accounting The following significant accounting policies are consistently followed by the Trust in the preparation of its financial statements in conformity with U.S. GAAP. The preparation of financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. Certain statements and captions in the financial statements for the prior year have been changed to conform to the current financial statement presentation.
Derivatives, Methods of Accounting, Derivatives Not Designated or Qualifying as Hedges [Policy Text Block]	B. Investment in Index Futures The Trust seeks to track the results of a fully collateralized investment in futures contracts on an index composed of a diversified group of commodity futures, including energy commodities, precious and industrial metal commodities, agricultural commodities and livestock commodities. The Trust seeks to track the investment returns of the Index before payment of the Trust’s expenses and liabilities. The assets of the Trust consist of Index Futures and cash or other Collateral Assets used to satisfy applicable margin requirements for those Index Futures positions. Index Futures are exchange-traded index futures contracts on the S&P GSCI-ER, and are expected to include contracts of different terms and expirations. The Trust is expected to roll out of existing positions in Index Futures and establish new positions in Index Futures on an ongoing basis. When establishing positions in Index Futures, the Trust is required to deposit cash or other Collateral Assets with the broker as “initial margin.” On a daily basis, the Trust is obligated to pay, or entitled to receive, cash in an amount equal to the change in the daily settlement level of its Index Futures positions. Such payments or receipts are known as variation margin. Variation margin is recorded as unrealized appreciation (depreciation) and, if any, shown as variation margin receivable (or payable) on futures contracts in the Statements of Assets and Liabilities. When an Index Futures contract is closed, the Trust records a realized gain or loss based on the difference between the value of the Index Futures contract at the time it was opened and the value at the time it was closed. Index Futures are derivative instruments valued at fair value, which the Trustee has determined to be that day’s announced settlement price on the CME or any such other futures exchange listing Index Futures (the “Exchange”). If there is no not For futures contracts, counterparty credit risk is mitigated because futures contracts are exchange-traded and the exchange’s clearing house acts as central counterparty to all exchange-traded futures contracts (although customers continue to have credit exposure to the clearing member who holds their account). Please refer to Note 9
Cash and Cash Equivalents, Policy [Policy Text Block]	C. Cash The Trust considers cash as currencies deposited in one
Investment, Policy [Policy Text Block]	D. Short-Term Investments Short-term investments on the Statements of Assets and Liabilities consist principally of short-term fixed income securities with original maturities of one As of December 31, 2022 December 31, 2021,
Securities Transactions Income and Expense Recognition [Policy Text Block]	E. Securities Transactions and Income Recognition Securities transactions are accounted for on the trade date. Realized gains and losses on investment transactions are determined using the specific identification method. Interest income, including amortization and accretion of premiums and discounts on debt securities, is recognized daily on an accrual basis.
Income Tax, Policy [Policy Text Block]	F. Income Taxes The Trust is treated as a partnership for federal, state and local income tax purposes. No not The Sponsor has analyzed the tax positions as of December 31, 2022, not
Calculation of Net Asset Value [Policy Text Block]	G. Calculation of Net Asset Value The net asset value of the Trust on any given day is obtained by subtracting the Trust’s accrued expenses and other liabilities on that day from the value of ( 1 2 3 4:00 4:00
Distributions [Policy Text Block]	H. Distributions Interest and distributions received by the Trust on its assets may no

Schedules of Investments (Table

Schedules of Investments (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Investment [Table Text Block]	Security Description Face Amount Fair Value U.S. Treasury bills (a)(b) 3.05% 3.89% 1/03/23 $ 94,000,000 $ 94,000,000 3.37% 3.87% 1/05/23 120,000,000 119,975,767 3.81% 4.01% 1/10/23 80,000,000 79,943,727 3.81% 1/12/23 35,000,000 34,969,615 3.80% 4.10% 1/17/23 170,000,000 169,756,793 3.56% 3.86% 1/19/23 71,000,000 70,885,769 3.68% 4.19% 1/24/23 255,000,000 254,428,687 3.72% 3.96% 1/26/23 68,000,000 67,831,414 4.09% 1/31/23 60,000,000 59,816,134 3.99% 4.01% 2/07/23 81,000,000 80,692,100 4.04% 2/14/23 6,000,000 5,971,795 4.24% 2/16/23 45,000,000 44,776,219 4.22% 2/21/23 60,000,000 59,660,552 3.97% 2/23/23 60,000,000 59,638,909 Total U.S. Treasury bills (Cost: $ 1,201,949,825 1,202,347,481 Total Investments – 98.46% 1,202,347,481 Other Assets, Less Liabilities – 1.54% 18,762,376 Net Assets – 100.00% $ 1,221,109,857 Security Description Face Amount Fair Value U.S. Treasury bills (a)(b) 0.03% 0.04% 1/04/22 $ 100,000,000 $ 100,000,084 0.03% 0.04% 1/06/22 84,000,000 83,999,971 0.03% 1/11/22 53,000,000 52,999,941 0.04% 0.05% 1/25/22 20,000,000 19,999,771 0.03% 0.06% 2/01/22 74,000,000 73,998,510 0.05% 2/03/22 20,000,000 19,999,483 0.03% 0.05% 2/08/22 105,000,000 104,996,981 0.05% 2/10/22 89,000,000 88,996,946 0.03% 0.05% 2/15/22 120,000,000 119,996,058 0.03% 0.05% 2/17/22 121,000,000 120,995,463 0.03% 0.04% 2/22/22 76,000,000 75,998,152 0.04% 0.05% 2/24/22 135,450,000 135,444,620 0.05% 0.06% 3/1/22 120,000,000 119,993,349 0.04% 0.06% 3/03/22 127,000,000 126,990,114 0.05% 3/08/22 66,000,000 65,994,133 0.04% 3/10/22 35,000,000 34,997,273 0.05% 3/15/22 58,000,000 57,995,081 0.06% 3/17/22 35,000,000 34,996,079 0.08% 3/24/22 60,000,000 59,992,534 Total U.S. Treasury bills (Cost: $ 1,498,362,211 1,498,384,543 Total Investments – 104.65% 1,498,384,543 Other Assets, Less Liabilities – (4.65)% (66,574,428 ) Net Assets – 100.00% $ 1,431,810,115
Schedule of Derivative Instruments [Table Text Block]	Number of Contracts Expiration Date Current Notional Amount Net Unrealized Appreciation (Depreciation) 38,848 March 15, 2023 $ 1,215,724,851 60,324,698 Number of Contracts Expiration Date Current Notional Amount Net Unrealized Appreciation (Depreciation) 56,436 March 15, 2022 $ 1,430,714,680 37,006,921

Note 8 - Financial Highlights (

Note 8 - Financial Highlights (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Financial Highlights [Table Text Block]	December 31, 2022 2021 2020 Net asset value per Share, beginning of year $ 17.10 $ 12.30 $ 16.24 Net investment income (loss) (a) 0.09 (0.13 ) (0.04 ) Net realized and unrealized gain (loss) (b) 4.03 4.93 (3.90 ) Net increase (decrease) in net assets from operations 4.12 4.80 (3.94 ) Net asset value per Share, end of year $ 21.22 $ 17.10 $ 12.30 Total return, at net asset value (c) 24.09 % 39.02 % (24.26 )% Ratio to average net assets: Net investment income (loss) 0.42 % (0.82 )% (0.34 )% Expenses 0.82 % 0.86 % 0.90 %

Note 9 - Investing in Index F_2

Note 9 - Investing in Index Futures (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	Asset Derivatives Fair Value Liability Derivatives Fair Value December 31, 2022 Commodity contracts Receivable for variation margin on open futures contracts $ 14,408,722 Payable for variation margin on open futures contracts $ — December 31, 2021 Commodity contracts Receivable for variation margin on open futures contracts $ — Payable for variation margin on open futures contracts $ 17,314,591
Derivative Instruments, Gain (Loss) [Table Text Block]	Statements of Operations Location Net Realized Gain (Loss) Net Change in Unrealized Appreciation/Depreciation December 31, 2022 Commodity contracts Net realized gain (loss) from futures contracts $ 359,651,081 $ — Net change in unrealized appreciation/depreciation on futures contracts — 23,317,777 December 31, 2021 Commodity contracts Net realized gain (loss) from futures contracts $ 381,834,976 $ — Net change in unrealized appreciation/depreciation on futures contracts — (5,445,651 ) December 31, 2020 Commodity contracts Net realized gain (loss) from futures contracts $ (204,137,367 ) $ — Net change in unrealized appreciation/depreciation on futures contracts — 22,817,921

Note 10 - Investment Valuation

Note 10 - Investment Valuation (Tables)	12 Months Ended
	Dec. 31, 2022
Notes Tables
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table Text Block]	Level 1 Level 2 Level 3 Total December 31, 2022 Futures contracts (a) $ 60,324,698 $ — $ — $ 60,324,698 U.S. Treasury bills — 1,202,347,481 — 1,202,347,481 December 31, 2021 Futures contracts (a) $ 37,006,921 $ — $ — $ 37,006,921 U.S. Treasury bills — 1,498,384,543 — 1,498,384,543

Schedules of Investments - Inve

Schedules of Investments - Investments (Details) - USD ($)		Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
Total U.S. Treasury bills and notes		$ 1,202,347,481	$ 1,498,384,543
Other Assets, Less Liabilities		18,762,376	(66,574,428)
Net Assets – 100.00%		1,221,109,857	1,431,810,115	[1]	$ 827,346,620	$ 775,343,105
United States Treasury Bills 3.05% – 3.89% due 1/03/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	94,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	94,000,000
United States Treasury Bills 0.03% – 0.04% due 1/04/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		100,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		100,000,084
United States Treasury Bills 3.37% – 3.87% due 1/05/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	120,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	119,975,767
United States Treasury Bills 0.03% - 0.04% Due 1/06/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		84,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		83,999,971
United States Treasury Bills 3.81% – 4.01% due 1/10/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	80,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	79,943,727
United States Treasury Bills 0.03% Due 1/11/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		53,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		52,999,941
United States Treasury Bills 0.04% - 0.05% Due 1/25/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		20,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		19,999,771
United States Treasury Bills 3.81% due 1/12/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	35,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	34,969,615
United States Treasury Bills 0.03% - 0.06% Due 2/01/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		74,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		73,998,510
United States Treasury Bills 3.80% – 4.10% due 1/17/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	170,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	169,756,793
United States Treasury Bills 0.05% Due 2/03/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		20,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		19,999,483
United States Treasury Bills 3.56% – 3.86% due 1/19/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	71,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	70,885,769
United States Treasury Bills 0.03% - 0.05% Due 2/08/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		105,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		104,996,981
United States Treasury Bills 3.68% – 4.19% due 1/24/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	255,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	254,428,687
United States Treasury Bills 0.05% Due 2/10/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		89,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		88,996,946
United States Treasury Bills 3.72% – 3.96% due 1/26/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	68,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	67,831,414
United States Treasury Bills 0.03% - 0.05% Due 2/15/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		120,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		119,996,058
United States Treasury Bills 4.09% due 1/31/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	60,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	59,816,134
United States Treasury Bills 0.03% - 0.05% Due 2/17/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		121,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		120,995,463
United States Treasury Bills 3.99% – 4.01% due 2/07/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	81,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	80,692,100
United States Treasury Bills 0.03% - 0.04% Due 2/22/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		76,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		75,998,152
United States Treasury Bills 4.04% due 2/14/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	6,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	5,971,795
United States Treasury Bills 0.04% - 0.05% Due 2/24/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		135,450,000
U.S. Treasury bills and notes, fair value	[1],[2]		135,444,620
United States Treasury Bills 4.24% due 2/16/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	45,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	44,776,219
United States Treasury Bills 0.05% - 0.06% Due 3/1/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		120,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		119,993,349
United States Treasury Bills 4.22% due 2/21/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	60,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	59,660,552
United States Treasury Bills 0.04% - 0.06% Due 3/03/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		127,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		126,990,114
United States Treasury Bills 3.97% due 2/23/23 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]	60,000,000
U.S. Treasury bills and notes, fair value	[1],[2]	59,638,909
United States Treasury Bills 0.05% Due 3/08/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		66,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		65,994,133
United States Treasury Bills 0.04% Due 3/10/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		35,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		34,997,273
US Treasury Bill Securities [Member]
Total U.S. Treasury bills and notes		$ 1,202,347,481	1,498,384,543
United States Treasury Bills 0.05% Due 3/15/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		58,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		57,995,081
United States Treasury Bills 0.06% Due 3/17/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		35,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		34,996,079
United States Treasury Bills 0.08% Due 3/24/22 [Member]
U.S. Treasury bills and notes, face amount	[1],[2]		60,000,000
U.S. Treasury bills and notes, fair value	[1],[2]		$ 59,992,534
[1]A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D.[2]Rates shown are discount rates paid at the time of purchase.

Schedules of Investments - In_2

Schedules of Investments - Investments (Details) (Parentheticals) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Cost of short-term investments		$ 1,099,953,044	$ 1,412,781,989
Liabilities percentage of net asset value		1.54%	(4.65%)
Total percentage of net asset value		100%	100%
United States Treasury Bills 3.05% – 3.89% due 1/03/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 01, 2023
United States Treasury Bills 3.05% – 3.89% due 1/03/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.05%
United States Treasury Bills 3.05% – 3.89% due 1/03/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.89%
United States Treasury Bills 0.03% – 0.04% due 1/04/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Jan. 04, 2022
United States Treasury Bills 0.03% – 0.04% due 1/04/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% – 0.04% due 1/04/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 3.37% – 3.87% due 1/05/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 05, 2023
United States Treasury Bills 3.37% – 3.87% due 1/05/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.37%
United States Treasury Bills 3.37% – 3.87% due 1/05/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.87%
United States Treasury Bills 0.03% - 0.04% Due 1/06/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Jan. 06, 2022
United States Treasury Bills 0.03% - 0.04% Due 1/06/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.04% Due 1/06/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 3.81% – 4.01% due 1/10/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 10, 2023
United States Treasury Bills 3.81% – 4.01% due 1/10/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.81%
United States Treasury Bills 3.81% – 4.01% due 1/10/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.01%
United States Treasury Bills 0.03% Due 1/11/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
U.S. Treasury bills and notes, due date	[1],[2]		Jan. 11, 2022
United States Treasury Bills 0.04% - 0.05% Due 1/25/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Jan. 25, 2022
United States Treasury Bills 0.04% - 0.05% Due 1/25/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 0.04% - 0.05% Due 1/25/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 3.81% due 1/12/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.81%
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 12, 2023
United States Treasury Bills 0.03% - 0.06% Due 2/01/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 01, 2022
United States Treasury Bills 0.03% - 0.06% Due 2/01/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.06% Due 2/01/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.06%
United States Treasury Bills 3.80% – 4.10% due 1/17/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 17, 2023
United States Treasury Bills 3.80% – 4.10% due 1/17/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.80%
United States Treasury Bills 3.80% – 4.10% due 1/17/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.10%
United States Treasury Bills 0.05% Due 2/03/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 03, 2022
United States Treasury Bills 3.56% – 3.86% due 1/19/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 19, 2023
United States Treasury Bills 3.56% – 3.86% due 1/19/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.56%
United States Treasury Bills 3.56% – 3.86% due 1/19/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.86%
United States Treasury Bills 0.03% - 0.05% Due 2/08/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 08, 2022
United States Treasury Bills 0.03% - 0.05% Due 2/08/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.05% Due 2/08/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 3.68% – 4.19% due 1/24/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 24, 2023
United States Treasury Bills 3.68% – 4.19% due 1/24/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.68%
United States Treasury Bills 3.68% – 4.19% due 1/24/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.19%
United States Treasury Bills 0.05% Due 2/10/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 10, 2022
United States Treasury Bills 3.72% – 3.96% due 1/26/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 26, 2023
United States Treasury Bills 3.72% – 3.96% due 1/26/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.72%
United States Treasury Bills 3.72% – 3.96% due 1/26/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.96%
United States Treasury Bills 0.03% - 0.05% Due 2/15/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 15, 2022
United States Treasury Bills 0.03% - 0.05% Due 2/15/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.05% Due 2/15/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 4.09% due 1/31/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.09%
U.S. Treasury bills and notes, due date	[1],[2]	Jan. 31, 2023
United States Treasury Bills 0.03% - 0.05% Due 2/17/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 17, 2022
United States Treasury Bills 0.03% - 0.05% Due 2/17/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.05% Due 2/17/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 3.99% – 4.01% due 2/07/23 [Member]
U.S. Treasury bills and notes, due date	[1],[2]	Feb. 07, 2023
United States Treasury Bills 3.99% – 4.01% due 2/07/23 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.99%
United States Treasury Bills 3.99% – 4.01% due 2/07/23 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.01%
United States Treasury Bills 0.03% - 0.04% Due 2/22/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 22, 2022
United States Treasury Bills 0.03% - 0.04% Due 2/22/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.03%
United States Treasury Bills 0.03% - 0.04% Due 2/22/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 4.04% due 2/14/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.04%
U.S. Treasury bills and notes, due date	[1],[2]	Feb. 14, 2023
United States Treasury Bills 0.04% - 0.05% Due 2/24/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Feb. 24, 2022
United States Treasury Bills 0.04% - 0.05% Due 2/24/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 0.04% - 0.05% Due 2/24/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 4.24% due 2/16/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.24%
U.S. Treasury bills and notes, due date	[1],[2]	Feb. 16, 2023
United States Treasury Bills 0.05% - 0.06% Due 3/1/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 01, 2022
United States Treasury Bills 0.05% - 0.06% Due 3/1/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
United States Treasury Bills 0.05% - 0.06% Due 3/1/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.06%
United States Treasury Bills 4.22% due 2/21/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	4.22%
U.S. Treasury bills and notes, due date	[1],[2]	Feb. 21, 2023
United States Treasury Bills 0.04% - 0.06% Due 3/03/22 [Member]
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 03, 2022
United States Treasury Bills 0.04% - 0.06% Due 3/03/22 [Member] | Minimum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
United States Treasury Bills 0.04% - 0.06% Due 3/03/22 [Member] | Maximum [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.06%
United States Treasury Bills 3.97% due 2/23/23 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]	3.97%
U.S. Treasury bills and notes, due date	[1],[2]	Feb. 23, 2023
United States Treasury Bills 0.05% Due 3/08/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 08, 2022
US Treasury Bill Securities [Member]
Cost of short-term investments		$ 1,201,949,825	$ 1,498,362,211
Percentage of net asset value		98.46%	104.65%
United States Treasury Bills 0.04% Due 3/10/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.04%
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 10, 2022
United States Treasury Bills 0.05% Due 3/15/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.05%
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 15, 2022
United States Treasury Bills 0.06% Due 3/17/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.06%
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 17, 2022
United States Treasury Bills 0.08% Due 3/24/22 [Member]
U.S. Treasury bills and notes, effective rate	[1],[2]		0.08%
U.S. Treasury bills and notes, due date	[1],[2]		Mar. 24, 2022
[1]A portion of the above U.S. Treasury bills are posted as margin for the Trust’s Index Futures positions as described in Note 2D.[2]Rates shown are discount rates paid at the time of purchase.

Schedules of Investments - Open

Schedules of Investments - Open S&P GSCI ER Index Futures Contracts (Details)	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Number of contracts	38,848	56,436
Expiration date	Mar. 15, 2023	Mar. 15, 2022
Current notional amount	$ 1,215,724,851	$ 1,430,714,680
Net unrealized appreciation (depreciation)	$ 60,324,698	$ 37,006,921

Note 2 - Significant Accounti_2

Note 2 - Significant Accounting Policies (Details Textual) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Deposits with Clearing Organizations and Others, Securities	[1]	$ 102,037,820	$ 85,581,308
[1]Cost of short-term investments held at broker (restricted): $101,996,781 and $85,580,222, respectively.

Note 3 - Offering of the Shar_2

Note 3 - Offering of the Shares (Details Textual)	Dec. 31, 2022 shares
Shares Prescribed Aggregation (in shares)	50,000

Note 4 - Trust Expenses (Detail

Note 4 - Trust Expenses (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Sponsors Fee Annualized Accrual Rate Based on Net Asset Value of Trust	0.75%
Maximum [Member]
Legal Fees Per Year Maximum	$ 500,000	$ 100,000

Note 8 - Financial Highlights -

Note 8 - Financial Highlights - Net Asset Value and Financial Highlights (Details) - $ / shares		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net asset value per Share, beginning of year (in dollars per share)		$ 17.10	$ 12.30	$ 16.24
Net investment income (loss) (in dollars per share)	[1]	0.09	(0.13)	(0.04)
Net realized and unrealized gain (loss) (in dollars per share)	[2]	4.03	4.93	(3.90)
Net increase (decrease) in net assets from operations (in dollars per share)		4.12	4.80	(3.94)
Net asset value per Share, end of year (in dollars per share)		$ 21.22	$ 17.10	$ 12.30
Total return, at net asset value	[3]	24.09%	39.02%	(24.26%)
Ratio to average net assets:
Net investment income (loss)		0.42%	(0.82%)	(0.34%)
Expenses		0.82%	0.86%	0.90%
[1]Based on average Shares outstanding during the year.[2]The amounts reported for a Share outstanding may not accord with the change in aggregate gains and losses on investments for the period due to the timing of Trust Share transactions in relation to the fluctuating fair values of the Trust’s underlying investments.[3]Based on the change in net asset value of a Share during the year.

Note 9 - Investing in Index F_3

Note 9 - Investing in Index Futures (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Average Month-End Notional Amount of Derivative Contracts	$ 1,745,238,033	$ 1,239,905,352

Note 9 - Investing in Index F_4

Note 9 - Investing in Index Futures - Effect of the Futures Contracts, by Risk Exposure Category, on the Statements of Financial Condition (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Receivable for variation margin on open futures contracts	$ 14,408,722	$ 0
Payable for variation margin on open futures contracts	0	17,314,591
Commodity Contract [Member] | Receivable for Variation Margin on Open Futures Contracts [Member]
Receivable for variation margin on open futures contracts	14,408,722	0
Commodity Contract [Member] | Payable for Variation Margin on Open Futures Contracts [Member]
Payable for variation margin on open futures contracts	$ 0	$ 17,314,591

Note 9 - Investing in Index F_5

Note 9 - Investing in Index Futures - Effect of the Futures Contracts, by Risk Exposure Category, on the Statements of Operations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net realized gain (loss) from futures contracts	$ 359,651,081	$ 381,834,976	$ (204,137,367)
Net change in unrealized appreciation/depreciation on futures contracts	23,317,777	(5,445,651)	22,817,921
Commodity Contract [Member] | Net Realized Gain Loss from Futures Contracts [Member]
Net realized gain (loss) from futures contracts	359,651,081	381,834,976	(204,137,367)
Commodity Contract [Member] | Net Change in Unrealized Appreciation Depreciation on Futures Contracts [Member]
Net change in unrealized appreciation/depreciation on futures contracts	$ 23,317,777	$ (5,445,651)	$ 22,817,921

Note 10 - Investment Valuatio_2

Note 10 - Investment Valuation - Valuation of the Trust's Investments by the Fair Value Hierarchy (Details) - USD ($)		Dec. 31, 2022	Dec. 31, 2021
Futures [Member]
Investment, fair value	[1]	$ 60,324,698	$ 37,006,921
US Treasury Bill Securities [Member]
Investment, fair value		1,202,347,481	1,498,384,543
Fair Value, Inputs, Level 1 [Member] | Futures [Member]
Investment, fair value	[1]	60,324,698	37,006,921
Fair Value, Inputs, Level 1 [Member] | US Treasury Bill Securities [Member]
Investment, fair value		0	0
Fair Value, Inputs, Level 2 [Member] | Futures [Member]
Investment, fair value	[1]	0	0
Fair Value, Inputs, Level 2 [Member] | US Treasury Bill Securities [Member]
Investment, fair value		1,202,347,481	1,498,384,543
Fair Value, Inputs, Level 3 [Member] | Futures [Member]
Investment, fair value	[1]	0	0
Fair Value, Inputs, Level 3 [Member] | US Treasury Bill Securities [Member]
Investment, fair value		$ 0	$ 0
[1]Shown at the unrealized appreciation (depreciation) on the contracts.