United States Copper Index Fund (CPER) 10-K 13 Mar 20 2019 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 11, 2020	Jun. 30, 2019
Document Information
Document Annual Report	true
Document Transition Report	false
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Entity File Number	001-34833
Entity Registrant Name	United States Commodity Index Funds Trust
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-1537655
Entity Address, Address Line One	1850 Mt. Diablo Boulevard, Suite 640
Entity Address, City or Town	Walnut Creek
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94596
City Area Code	510
Local Phone Number	522-9600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$ 360,389,637
Entity Central Index Key	0001479247
Amendment Flag	false
Common Stock
Document Information
Entity Common Stock, Shares Outstanding		5,500,000
United States Commodity Index Fund
Document Information
Title of 12(b) Security	Shares of United States Commodity Index Fund
Trading Symbol	USCI
Security Exchange Name	NYSEArca
Entity Common Stock, Shares Outstanding		4,900,000
Entity Public Float			349,366,315
United States Copper Index Fund
Document Information
Title of 12(b) Security	Shares of United States Copper Index Fund
Trading Symbol	CPER
Security Exchange Name	NYSEArca
Entity Common Stock, Shares Outstanding		600,000
Entity Public Float			$ 11,023,322

Condensed Statements of Financi

Condensed Statements of Financial Condition - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 169,737,534	$ 438,410,816
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	27,676,364	52,214,641
Unrealized gain (loss) on open commodity futures contracts	2,485,118	(15,391,459)
Receivable from Sponsor (Note 4)	67,629	51,299
Dividends receivable	26,873	11,339
Interest receivable	125	4,445
Prepaid insurance	20,451	41,440
ETF transaction fees receivable	350	0
Total assets	200,014,444	475,637,737
Liabilities and Capital
Payable due to Broker	429,967	0
Payable for shares redeemed	1,843,700	0
Management fees payable (Note 4)	147,346	373,759
Professional fees payable	636,133	654,096
Brokerage commissions payable	33,805	43,305
Directors' fees payable	11,634	19,174
Total liabilities	3,102,585	1,090,334
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	1,000	0
Shareholders	196,910,859	474,547,403
Total Capital	196,911,859	474,547,403
Total liabilities and capital	$ 200,014,444	$ 475,637,737
Shares outstanding	5,550,000	13,050,000
United States Commodity Index Fund
Assets
Cash and cash equivalents	$ 163,036,680	$ 427,657,030
Equity in trading accounts:
Cash and cash equivalents	27,277,314	50,852,183
Unrealized gain (loss) on open commodity futures contracts	2,138,868	(14,487,984)
Dividends receivable	25,510	9,983
Interest receivable	0	4,224
Prepaid insurance	20,198	41,237
ETF transaction fees receivable	350	0
Total assets	192,498,920	464,076,673
Liabilities and Capital
Payable for shares redeemed	1,843,700	0
Management fees payable (Note 4)	142,699	367,646
Professional fees payable	571,822	604,296
Brokerage commissions payable	33,805	43,305
Directors' fees payable	11,412	18,918
Total liabilities	2,603,438	1,034,165
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	0	0
Shareholders	189,895,482	463,042,508
Total Capital	189,895,482	463,042,508
Total liabilities and capital	$ 192,498,920	$ 464,076,673
Shares outstanding	5,150,000	12,350,000
Net asset value per share	$ 36.87	$ 37.49
Market value per share	$ 36.90	$ 37.53
United States Copper Index Fund
Assets
Cash and cash equivalents	$ 6,699,854	$ 10,753,786
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	399,050	1,362,458
Unrealized gain (loss) on open commodity futures contracts	346,250	(903,475)
Receivable from Sponsor (Note 4)	67,629	51,299
Dividends receivable	1,363	1,356
Interest receivable	125	221
Prepaid insurance	253	203
Total assets	7,514,524	11,561,064
Liabilities and Capital
Payable due to Broker	429,967	0
Management fees payable (Note 4)	4,647	6,113
Professional fees payable	64,311	49,800
Directors' fees payable	222	256
Total liabilities	499,147	56,169
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	0	0
Shareholders	7,015,377	11,504,895
Total Capital	7,015,377	11,504,895
Total liabilities and capital	$ 7,514,524	$ 11,561,064
Shares outstanding	400,000	700,000
Net asset value per share	$ 17.54	$ 16.44
Market value per share	$ 17.54	$ 16.44
USCF Crescent Crypto Index Fund
Assets
Cash and cash equivalents	$ 1,000
Equity in trading accounts:
Total assets	1,000
Liabilities and Capital
Commitments and Contingencies (Notes 4, 5 and 6)
Capital
Sponsor	1,000
Shareholders	0
Total Capital	1,000
Total liabilities and capital	1,000
United States Commodity Index Funds Trust
Assets
Cash and cash equivalents	169,737,534	$ 438,410,816
Short-Term Investments	0	295,216
Equity in trading accounts:
Cash and cash equivalents	$ 27,676,364	$ 52,214,641

Condensed Statements of Finan_2

Condensed Statements of Financial Condition (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 169,737,534	$ 438,410,816
Short-Term Investments	0	295,216
Cash and cash equivalents	27,676,364	52,214,641
Sponsor Capital Account	1,000	0
United States Commodity Index Fund
Cash and cash equivalents	163,036,680	427,657,030
Cash and cash equivalents	27,277,314	50,852,183
Sponsor Capital Account	0	0
United States Copper Index Fund
Cash and cash equivalents	6,699,854	10,753,786
Short-Term Investments	0	295,216
Cash and cash equivalents	399,050	1,362,458
Sponsor Capital Account	0	0
USCF Crescent Crypto Index Fund
Cash and cash equivalents	1,000
Sponsor Capital Account	1,000
United States Commodity Index Funds Trust
Cash and cash equivalents	169,737,534	438,410,816
Short-Term Investments	0	295,216
Cash and cash equivalents	$ 27,676,364	$ 52,214,641

Condensed Schedule of Investmen

Condensed Schedule of Investments	Dec. 31, 2019USD ($)contract	Dec. 31, 2018USD ($)contract
United States Commodity Index Fund | United States Contracts | NYMEX RBOB Gasoline Futures RB March 2019 contracts, expiring February 2019
Notional Amount		$ 32,779,165
Number of Contracts | contract		595
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 7,715
% of Capital		0.00%
United States Commodity Index Fund | United States Contracts | ICE Cotton #2 Futures CT March 2019 contracts, expiring March 2019
Notional Amount		$ 35,489,270
Number of Contracts | contract		906
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (2,782,670)
% of Capital		(0.60%)
United States Commodity Index Fund | United States Contracts | CBOT Wheat Futures W March 2019 contracts, expiring March 2019
Notional Amount		$ 37,569,250
Number of Contracts | contract		1,305
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (4,732,188)
% of Capital		(1.02%)
United States Commodity Index Fund | United States Contracts | ICE Cocoa Futures CC March 2019 contracts, expiring March 2019
Notional Amount		$ 30,669,380
Number of Contracts | contract		1,370
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 2,429,820
% of Capital		0.52%
United States Commodity Index Fund | United States Contracts | COMEX Copper Futures HG March 2019 contracts, expiring March 2019
Notional Amount		$ 33,419,850
Number of Contracts | contract		493
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (992,775)
% of Capital		(0.21%)
United States Commodity Index Fund | United States Contracts | NYMEX Heating Oil Futures HO April 2019 contracts, expiring March 2019
Notional Amount		$ 41,084,917
Number of Contracts | contract		466
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (8,671,727)
% of Capital		(1.87%)
United States Commodity Index Fund | United States Contracts | COMEX Gold Futures GC April 2019 contracts, expiring April 2019
Notional Amount		$ 33,451,810
Number of Contracts | contract		260
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 28,390
% of Capital		0.01%
United States Commodity Index Fund | United States Contracts | CME Live Cattle Futures FC April 2019 contracts, expiring April 2019
Notional Amount		$ 32,451,460
Number of Contracts | contract		664
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 1,080,540
% of Capital		0.23%
United States Commodity Index Fund | United States Contracts | CBOT Soybean Meal Futures SM August 2019 contracts, expiring August 2019
Notional Amount		$ 33,445,010
Number of Contracts | contract		1,050
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (34,010)
% of Capital		(0.01%)
United States Commodity Index Fund | United States Contracts | CBOT Corn Futures C December 2019 contracts, expiring December 2019
Notional Amount		$ 33,356,287
Number of Contracts | contract		1,682
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 73,463
% of Capital		0.02%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts
Notional Amount	$ 104,745,986	$ 224,163,754
Number of Contracts	1,661	3,350
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (2,603,494)	$ (683,284)
% of Capital	(1.37%)	(0.15%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Aluminum Futures LA January 2020 contracts, expiring January 2020
Notional Amount	$ 15,995,580
Number of Contracts	366
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 376,058
% of Capital	0.20%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Zinc Futures LX January 2020 contracts, expiring January 2020
Notional Amount	$ 15,870,949
Number of Contracts	276
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (132,049)
% of Capital	(0.07%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | ICE Brent Crude Oil Futures CO April 2020 contracts, expiring February 2020
Notional Amount	$ 13,346,390
Number of Contracts	206
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 103,350
% of Capital	0.05%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Nickel Futures LN March 2020 contracts, expiring March 2020
Notional Amount	$ 18,627,141
Number of Contracts	189
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (2,724,217)
% of Capital	(1.43%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Zinc Futures LX April 2020 contracts, expiring April 2020
Notional Amount	$ 13,770,894
Number of Contracts	240
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (152,394)
% of Capital	(0.08%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | ICE Gas Oil Futures QS June 2020 contracts, expiring June 2020
Notional Amount	$ 13,567,750
Number of Contracts	225
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (140,875)
% of Capital	(0.07%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Tin Futures LT August 2020 contracts, expiring August 2020
Notional Amount	$ 13,567,282
Number of Contracts	159
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 66,633
% of Capital	0.03%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Tin Futures LT January 2019 contracts, expiring January 2019
Notional Amount		$ 42,828,870
Number of Contracts | contract		454
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 1,504,230
% of Capital		0.33%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Aluminum Futures LA January 2019 contracts, expiring January 2019
Notional Amount		$ 36,377,145
Number of Contracts | contract		754
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (2,018,308)
% of Capital		(0.44%)
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Tin Futures LT April 2019 contracts, expiring April 2019
Notional Amount		$ 33,478,866
Number of Contracts | contract		345
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 112,790
% of Capital		0.02%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Zinc Futures LX May 2019 contracts, expiring May 2019
Notional Amount		$ 32,946,918
Number of Contracts | contract		536
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (10,853)
% of Capital		0.00%
United States Commodity Index Fund | Open Futures Contracts - Long | Foreign Contracts | LME Zinc Futures LX January 2019 contracts, expiring January 2019
Notional Amount		$ 78,531,955
Number of Contracts | contract		1,261
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (271,143)
% of Capital		(0.06%)
United States Commodity Index Fund | Open Futures Contracts - Short
Notional Amount		$ 476,508,810
Number of Contracts | contract		16,259
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (14,487,984)
% of Capital		(3.13%)
United States Commodity Index Fund | Open Futures Contracts - Short | LME Tin Futures LT January 2019 contracts, expiring January 2019
Notional Amount		$ (41,861,500)
Number of Contracts | contract		454
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (2,472,323)
% of Capital		(0.53%)
United States Commodity Index Fund | Open Futures Contracts - Short | LME Aluminum Futures LA January 2019 contracts, expiring January 2019
Notional Amount		$ (34,664,722)
Number of Contracts | contract		754
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 301,708
% of Capital		0.06%
United States Commodity Index Fund | Open Futures Contracts - Short | LME Zinc Futures LX January 2019 contracts, expiring January 2019
Notional Amount		$ (79,255,458)
Number of Contracts | contract		1,261
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 987,079
% of Capital		0.21%
United States Commodity Index Fund | Open Futures Contracts - Short | Foreign Contracts
Notional Amount	$ (34,945,202)
Number of Contracts	673
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 221,715
% of Capital	0.12%
United States Commodity Index Fund | Open Futures Contracts - Short | Foreign Contracts | LME Aluminum Futures LA January 2020 contracts, expiring January 2020
Notional Amount	$ (16,436,388)
Number of Contracts	366
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 62,933
% of Capital	0.03%
United States Commodity Index Fund | Open Futures Contracts - Short | Foreign Contracts | LME Zinc Futures LX January 2020 contracts, expiring January 2020
Notional Amount	$ (15,888,926)
Number of Contracts	276
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 148,154
% of Capital	0.08%
United States Commodity Index Fund | Open Futures Contracts - Short | Foreign Contracts | LME Nickel Futures LN March 2020 contracts, expiring March 2020
Notional Amount	$ (2,619,888)
Number of Contracts	31
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 10,628
% of Capital	0.01%
United States Commodity Index Fund | Open Futures Contracts
Notional Amount	$ 187,533,737
Number of Contracts	4,965
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 2,138,868
% of Capital	1.13%
United States Commodity Index Fund | Open Futures Contracts | Foreign Contracts
Notional Amount		$ (155,781,680)
Number of Contracts | contract		2,469
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (1,183,536)
% of Capital		(0.26%)
United States Commodity Index Fund | Open Futures Contracts | United States Contracts
Notional Amount	$ 117,732,953	$ 408,126,736
Number of Contracts	2,631	10,440
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,520,647	$ (12,621,164)
% of Capital	2.38%	(2.72%)
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | CME Lean Hogs Futures LH February 2020 contracts, expiring February 2020
Notional Amount	$ 14,783,310
Number of Contracts	480
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (1,069,710)
% of Capital	(0.56%)
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | ICE Coffee-C Futures KC March 2020 contracts, expiring March 2020
Notional Amount	$ 12,630,543
Number of Contracts	285
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 1,231,144
% of Capital	0.65%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | COMEX Copper Futures HG May 2020 contracts, expiring March 2020
Notional Amount	$ 13,502,275
Number of Contracts	191
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (146,600)
% of Capital	(0.08%)
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | COMEX Silver Futures SI March 2020 contracts, expiring March 2020
Notional Amount	$ 13,642,920
Number of Contracts	151
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ (112,565)
% of Capital	(0.06%)
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | NYMEX Platinum Futures PL April 2020 contracts, expiring April 2020
Notional Amount	$ 12,884,950
Number of Contracts	284
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 999,810
% of Capital	0.53%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | NYMEX Heating Oil Futures HO June 2019 contracts, expiring May 2020
Notional Amount	$ 12,441,702
Number of Contracts	162
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 971,023
% of Capital	0.51%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | CBOT Soybean Futures S July 2020 contracts, expiring July 2020
Notional Amount	$ 12,152,022
Number of Contracts	644
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 1,511,082
% of Capital	0.79%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | NYMEX WTI Crude Oil Futures CL September 2020 contracts, expiring August 2020
Notional Amount	$ 12,753,250
Number of Contracts	233
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 707,160
% of Capital	0.37%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | NYMEX RBOB Gasoline Futures RB December 2020 contracts, expiring November 2020
Notional Amount	$ 12,941,981
Number of Contracts	201
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 429,303
% of Capital	0.23%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | CME Feeder Cattle Futures FC March 2019 contracts, expiring March 2019
Notional Amount		$ 33,488,387
Number of Contracts | contract		457
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 43,988
% of Capital		0.01%
United States Commodity Index Fund | Open Futures Contracts | United States Contracts | NYMEX Natural Gas Futures NG May 2019 contracts, expiring April 2019
Notional Amount		$ 30,921,950
Number of Contracts | contract		1,192
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ 928,290
% of Capital		0.20%
United States Commodity Index Fund | Cash Equivalents
Market Value	$ 188,989,355	$ 436,426,995
% of Capital	99.52%	94.25%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations
Market Value	$ 169,489,355	$ 430,026,995
% of Capital	89.25%	92.87%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.91%, 1/02/2020
Principal Amount	$ 12,000,000
Market Value	$ 11,999,368
% of Capital	6.32%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.03%, 1/09/2020
Principal Amount	$ 16,000,000
Market Value	$ 15,992,853
% of Capital	8.42%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.75%, 1/16/2020
Principal Amount	$ 15,000,000
Market Value	$ 14,989,115
% of Capital	7.89%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.04%, 1/23/2020
Principal Amount	$ 5,000,000
Market Value	$ 4,993,837
% of Capital	2.63%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.02%, 1/30/2020
Principal Amount	$ 26,000,000
Market Value	$ 25,958,153
% of Capital	13.67%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 2/20/2020
Principal Amount	$ 15,000,000
Market Value	$ 14,968,125
% of Capital	7.88%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.70%, 3/26/2020
Principal Amount	$ 20,000,000
Market Value	$ 19,920,194
% of Capital	10.49%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.64%, 4/09/2020
Principal Amount	$ 10,000,000
Market Value	$ 9,955,175
% of Capital	5.24%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.60%, 4/16/2020
Principal Amount	$ 15,000,000
Market Value	$ 14,929,775
% of Capital	7.86%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.59%, 4/30/2020
Principal Amount	$ 9,000,000
Market Value	$ 8,952,750
% of Capital	4.72%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/21/2020
Principal Amount	$ 15,000,000
Market Value	$ 14,909,819
% of Capital	7.85%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.53%, 6/04/2020
Principal Amount	$ 10,000,000
Market Value	$ 9,934,556
% of Capital	5.23%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 6/18/2020
Principal Amount	$ 2,000,000
Market Value	$ 1,985,635
% of Capital	1.05%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.07%, 1/03/2019
Principal Amount		$ 15,000,000
Market Value		$ 14,998,296
% of Capital		3.24%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.16%, 1/10/2019
Principal Amount		$ 40,000,000
Market Value		$ 39,978,587
% of Capital		8.63%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.18%, 1/17/2019
Principal Amount		$ 15,000,000
Market Value		$ 14,985,567
% of Capital		3.24%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 1/24/2019
Principal Amount		$ 8,000,000
Market Value		$ 7,988,730
% of Capital		1.72%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 1/31/2019
Principal Amount		$ 37,000,000
Market Value		$ 36,932,187
% of Capital		7.98%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.25%, 2/07/2019
Principal Amount		$ 23,000,000
Market Value		$ 22,947,285
% of Capital		4.96%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.28%, 2/14/2019
Principal Amount		$ 54,000,000
Market Value		$ 53,850,510
% of Capital		11.63%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.29%, 2/21/2019
Principal Amount		$ 20,000,000
Market Value		$ 19,935,768
% of Capital		4.30%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.10%, 2/28/2019
Principal Amount		$ 7,000,000
Market Value		$ 6,976,703
% of Capital		1.51%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.34%, 3/07/2019
Principal Amount		$ 57,000,000
Market Value		$ 56,761,748
% of Capital		12.26%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.12%, 3/28/2019
Principal Amount		$ 10,000,000
Market Value		$ 9,950,431
% of Capital		2.15%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.41%, 4/04/2019
Principal Amount		$ 16,000,000
Market Value		$ 15,901,317
% of Capital		3.43%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 4/11/2019
Principal Amount		$ 30,000,000
Market Value		$ 29,799,167
% of Capital		6.43%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 4/25/2019
Principal Amount		$ 4,000,000
Market Value		$ 3,972,450
% of Capital		0.86%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.46%, 5/02/2019
Principal Amount		$ 23,000,000
Market Value		$ 22,812,534
% of Capital		4.93%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.47%, 5/09/2019
Principal Amount		$ 2,000,000
Market Value		$ 1,982,684
% of Capital		0.43%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 5/23/2019
Principal Amount		$ 40,000,000
Market Value		$ 39,619,756
% of Capital		8.56%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.51%, 6/06/2019
Principal Amount		$ 6,000,000
Market Value		$ 5,935,650
% of Capital		1.28%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.49%, 6/27/2019
Principal Amount		$ 25,000,000
Market Value		$ 24,697,625
% of Capital		5.33%
United States Commodity Index Fund | Cash Equivalents | Fidelity Investments Money Market Funds - Government Portfolio
Principal Amount	$ 3,900,000	$ 2,200,000
Market Value	$ 3,900,000	$ 2,200,000
% of Capital	2.05%	0.47%
United States Commodity Index Fund | Cash Equivalents | Goldman Sachs Financial Square Funds - Government Fund - Class FS
Principal Amount		$ 550,000
Market Value		$ 550,000
% of Capital		0.12%
United States Commodity Index Fund | Cash Equivalents | Morgan Stanley Institutional Liquidity Funds - Government Portfolio
Principal Amount		$ 3,650,000
Market Value		$ 3,650,000
% of Capital		0.79%
United States Commodity Index Fund | Cash Equivalents | United States - Money Market Funds
Market Value	$ 19,500,000	$ 6,400,000
% of Capital	10.27%	1.38%
United States Commodity Index Fund | Cash Equivalents | United States - Money Market Funds | Goldman Sachs Financial Square Funds - Government Fund - Class FS
Principal Amount	$ 10,000,000
Market Value	$ 10,000,000
% of Capital	5.27%
United States Commodity Index Fund | Cash Equivalents | United States - Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio
Principal Amount	$ 5,600,000
Market Value	$ 5,600,000
% of Capital	2.95%
United States Copper Index Fund | Open Futures Contracts - Long | United States Contracts
Notional Amount	$ 6,672,500
Number of Contracts | contract	100
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 346,250
% of Capital	4.94%
United States Copper Index Fund | Open Futures Contracts - Long | United States Contracts | CME Feeder Cattle Futures FC March 2019 contracts, expiring March 2019
Notional Amount		$ 12,348,325
Number of Contracts | contract		174
Value/Unrealized Gain (Loss) on Open Commodity Contracts		$ (903,475)
% of Capital		(7.85%)
United States Copper Index Fund | United States - Money Market Funds | Fidelity Investments Money Market Funds - Government Portfolio
Principal Amount	$ 15,000
Market Value	$ 15,000
% of Capital	0.21%
United States Copper Index Fund | United States - Money Market Funds | Morgan Stanley Institutional Liquidity Funds - Government Portfolio
Principal Amount		$ 235,000
Market Value		$ 235,000
% of Capital		2.04%
United States Copper Index Fund | Short-Term Investments | United States Treasury Obligations | U.S. Treasury Bills 2.59%, 8/15/2019
Principal Amount		$ 300,000
Market Value		$ 295,216
% of Capital		2.57%
United States Copper Index Fund | Cash Equivalents
Market Value	$ 7,096,018	$ 9,362,210
% of Capital	101.15%	81.38%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations
Market Value	$ 6,476,018	$ 8,507,210
% of Capital	92.31%	73.95%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.88%, 1/02/2020
Principal Amount	$ 200,000
Market Value	$ 199,990
% of Capital	2.85%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.03%, 1/09/2020
Principal Amount	$ 50,000
Market Value	$ 49,978
% of Capital	0.71%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.82%, 1/16/2020
Principal Amount	$ 400,000
Market Value	$ 399,700
% of Capital	5.70%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.63%, 1/23/2020
Principal Amount	$ 350,000
Market Value	$ 349,652
% of Capital	4.98%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.69%, 1/30/2020
Principal Amount	$ 450,000
Market Value	$ 449,391
% of Capital	6.41%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.67%, 2/06/2020
Principal Amount	$ 250,000
Market Value	$ 249,585
% of Capital	3.56%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.87%, 2/13/2020
Principal Amount	$ 300,000
Market Value	$ 299,335
% of Capital	4.27%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.85%, 2/20/2020
Principal Amount	$ 400,000
Market Value	$ 398,981
% of Capital	5.69%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.66%, 2/27/2020
Principal Amount	$ 300,000
Market Value	$ 299,216
% of Capital	4.27%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.80%, 3/26/2020
Principal Amount	$ 700,000
Market Value	$ 697,046
% of Capital	9.94%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.64%, 4/09/2020
Principal Amount	$ 250,000
Market Value	$ 248,879
% of Capital	3.55%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.60%, 4/16/2020
Principal Amount	$ 500,000
Market Value	$ 497,659
% of Capital	7.09%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.52%, 4/23/2020
Principal Amount	$ 400,000
Market Value	$ 398,104
% of Capital	5.67%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.59%, 4/30/2020
Principal Amount	$ 300,000
Market Value	$ 298,425
% of Capital	4.25%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 5/07/2020
Principal Amount	$ 300,000
Market Value	$ 298,386
% of Capital	4.25%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/14/2020
Principal Amount	$ 400,000
Market Value	$ 397,707
% of Capital	5.67%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/21/2020
Principal Amount	$ 500,000
Market Value	$ 496,994
% of Capital	7.08%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.58%, 5/28/2020
Principal Amount	$ 300,000
Market Value	$ 298,064
% of Capital	4.25%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 6/18/2020
Principal Amount	$ 150,000
Market Value	$ 148,926
% of Capital	2.12%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.76%, 1/03/2019
Principal Amount		$ 300,000
Market Value		$ 299,971
% of Capital		2.61%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.11%, 1/10/2019
Principal Amount		$ 700,000
Market Value		$ 699,634
% of Capital		6.08%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.13%, 1/17/2019
Principal Amount		$ 500,000
Market Value		$ 499,531
% of Capital		4.34%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.15%, 1/24/2019
Principal Amount		$ 700,000
Market Value		$ 699,050
% of Capital		6.08%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.14%, 1/31/2019
Principal Amount		$ 200,000
Market Value		$ 199,647
% of Capital		1.74%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.25%, 2/07/2019
Principal Amount		$ 400,000
Market Value		$ 399,083
% of Capital		3.47%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.24%, 2/14/2019
Principal Amount		$ 300,000
Market Value		$ 299,185
% of Capital		2.60%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.29%, 2/21/2019
Principal Amount		$ 350,000
Market Value		$ 348,872
% of Capital		3.03%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.01%, 2/28/2019
Principal Amount		$ 100,000
Market Value		$ 99,682
% of Capital		0.87%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.34%, 3/07/2019
Principal Amount		$ 350,000
Market Value		$ 348,537
% of Capital		3.03%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.35%, 3/21/2019
Principal Amount		$ 400,000
Market Value		$ 397,946
% of Capital		3.46%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.19%, 3/28/2019
Principal Amount		$ 500,000
Market Value		$ 497,432
% of Capital		4.32%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.40%, 4/04/2019
Principal Amount		$ 500,000
Market Value		$ 496,931
% of Capital		4.32%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 4/11/2019
Principal Amount		$ 500,000
Market Value		$ 496,660
% of Capital		4.32%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.44%, 4/18/2019
Principal Amount		$ 500,000
Market Value		$ 496,404
% of Capital		4.31%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.36%, 4/25/2019
Principal Amount		$ 450,000
Market Value		$ 446,688
% of Capital		3.88%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.46%, 5/02/2019
Principal Amount		$ 100,000
Market Value		$ 99,185
% of Capital		0.86%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.47%, 5/09/2019
Principal Amount		$ 500,000
Market Value		$ 495,671
% of Capital		4.31%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.45%, 5/23/2019
Principal Amount		$ 600,000
Market Value		$ 594,262
% of Capital		5.17%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.49%, 6/20/2019
Principal Amount		$ 200,000
Market Value		$ 197,677
% of Capital		1.72%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.49%, 6/27/2019
Principal Amount		$ 400,000
Market Value		$ 395,162
% of Capital		3.43%
United States Copper Index Fund | Cash Equivalents | United States - Money Market Funds
Market Value	$ 620,000	$ 855,000
% of Capital	8.84%	7.43%
United States Copper Index Fund | Cash Equivalents | United States - Money Market Funds | Goldman Sachs Financial Square Funds - Government Fund - Class FS
Principal Amount	$ 605,000	$ 620,000
Market Value	$ 605,000	$ 620,000
% of Capital	8.63%	5.39%

Condensed Schedule of Investm_2

Condensed Schedule of Investments (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
United States Commodity Index Fund
Interest rate		0.005%
Debt Instrument, Collateral Amount	$ 27,277,314	$ 50,852,183
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.91%, 1/02/2020
Interest rate	1.91%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.03%, 1/09/2020
Interest rate	2.03%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.75%, 1/16/2020
Interest rate	1.75%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.02%, 1/30/2020
Interest rate	2.02%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 2/20/2020
Interest rate	1.54%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.70%, 3/26/2020
Interest rate	1.70%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.64%, 4/09/2020
Interest rate	1.64%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.60%, 4/16/2020
Interest rate	1.60%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.59%, 4/30/2020
Interest rate	1.59%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/21/2020
Interest rate	1.55%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.53%, 6/04/2020
Interest rate	1.53%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 6/18/2020
Interest rate	1.54%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.07%, 1/03/2019
Interest rate		2.07%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.16%, 1/10/2019
Interest rate		2.16%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.18%, 1/17/2019
Interest rate		2.18%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 1/24/2019
Interest rate		2.22%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 1/31/2019
Interest rate		2.22%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.25%, 2/07/2019
Interest rate		2.25%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.28%, 2/14/2019
Interest rate		2.28%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.29%, 2/21/2019
Interest rate		2.29%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.10%, 2/28/2019
Interest rate		2.10%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.34%, 3/07/2019
Interest rate		2.34%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.12%, 3/28/2019
Interest rate		2.12%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.41%, 4/04/2019
Interest rate		2.41%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 4/11/2019
Interest rate		2.43%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.22%, 4/25/2019
Interest rate		2.22%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.46%, 5/02/2019
Interest rate		2.46%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.47%, 5/09/2019
Interest rate		2.47%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 5/23/2019
Interest rate		2.43%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.51%, 6/06/2019
Interest rate		2.51%
United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.49%, 6/27/2019
Interest rate		2.49%
United States Copper Index Fund
Debt Instrument, Collateral Amount	$ 399,050	$ 1,362,458
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.88%, 1/02/2020
Interest rate	1.88%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.03%, 1/09/2020
Interest rate	2.03%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.82%, 1/16/2020
Interest rate	1.82%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.63%, 1/23/2020
Interest rate	1.63%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.69%, 1/30/2020
Interest rate	1.69%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.67%, 2/06/2020
Interest rate	1.67%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.87%, 2/13/2020
Interest rate	1.87%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.85%, 2/20/2020
Interest rate	1.85%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.66%, 2/27/2020
Interest rate	1.66%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.80%, 3/26/2020
Interest rate	1.80%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.64%, 4/09/2020
Interest rate	1.64%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.60%, 4/16/2020
Interest rate	1.60%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.52%, 4/23/2020
Interest rate	1.52%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.59%, 4/30/2020
Interest rate	1.59%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 5/07/2020
Interest rate	1.54%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/14/2020
Interest rate	1.55%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.55%, 5/21/2020
Interest rate	1.55%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.58%, 5/28/2020
Interest rate	1.58%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.54%, 6/18/2020
Interest rate	1.54%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 1.76%, 1/03/2019
Interest rate		1.76%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.11%, 1/10/2019
Interest rate		2.11%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.13%, 1/17/2019
Interest rate		2.13%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.15%, 1/24/2019
Interest rate		2.15%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.14%, 1/31/2019
Interest rate		2.14%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.25%, 2/07/2019
Interest rate		2.25%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.24%, 2/14/2019
Interest rate		2.24%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.29%, 2/21/2019
Interest rate		2.29%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.01%, 2/28/2019
Interest rate		2.01%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.34%, 3/07/2019
Interest rate		2.34%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.35%, 3/21/2019
Interest rate		2.35%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.19%, 3/28/2019
Interest rate		2.19%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.40%, 4/04/2019
Interest rate		2.40%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.43%, 4/11/2019
Interest rate		2.43%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.44%, 4/18/2019
Interest rate		2.44%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.36%, 4/25/2019
Interest rate		2.36%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.46%, 5/02/2019
Interest rate		2.46%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.47%, 5/09/2019
Interest rate		2.47%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.45%, 5/23/2019
Interest rate		2.45%
United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.49%, 6/20/2019
Interest rate		2.49%
Short-Term Investments | United States Commodity Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.04%, 1/23/2020
Interest rate	2.04%
Short-Term Investments | United States Copper Index Fund | Cash Equivalents | United States Treasury Obligations | U.S. Treasury Bills 2.59%, 8/15/2019
Interest rate		2.59%

Condensed Statements of Operati

Condensed Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed positions	$ (30,279,328)	$ (56,209,907)	$ 24,220,537
Change in unrealized gain (loss) on open positions	17,876,577	(23,145,242)	5,699,448
Realized gain (loss) on foreign currency transactions		51	(31)
Realized gain (loss) on short-term investments	59	(286)	(23)
Change in unrealized gain (loss) on foreign currency translations		(13)	612
Dividend income	469,606	425,685	0
Interest income	7,658,530	10,030,763	4,112,328
ETF transaction fees	33,250	31,150	20,300
Total income (loss)	(4,241,306)	(68,867,799)	34,053,171
Expenses
Management fees (Note 4)	2,846,986	4,730,151	4,205,743
Professional fees	551,917	773,654	719,854
Brokerage commissions	460,079	546,563	534,994
Directors' fees and insurance	110,755	94,778	72,525
Total expenses	3,969,737	6,145,146	5,533,116
Expense waiver (Note 4)	(67,628)	(77,884)	(85,686)
Net expenses	3,902,109	6,067,262	5,447,430
Net income (loss)	(8,143,415)	(74,935,061)	28,605,741
United States Commodity Index Fund
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed positions	(29,144,478)	(54,710,680)	22,989,718
Change in unrealized gain (loss) on open positions	16,626,852	(21,360,954)	4,817,510
Dividend income	445,188	409,565	0
Interest income	7,449,252	9,827,503	4,017,753
ETF transaction fees	26,950	26,600	15,750
Total income (loss)	(4,596,236)	(65,807,966)	31,840,731
Expenses
Management fees (Note 4)	2,778,400	4,645,618	4,126,513
Professional fees	476,864	685,742	626,130
Brokerage commissions	453,997	539,884	527,610
Directors' fees and insurance	108,435	91,761	69,558
Total expenses	3,817,696	5,963,005	5,349,811
Net income (loss)	$ (8,413,932)	$ (71,770,971)	$ 26,490,920
Net income (loss) per share (in dollars per share)	$ (0.62)	$ (4.99)	$ 2.46
Net income (loss) per weighted average share (in dollars per share)	$ (0.91)	$ (5.21)	$ 2.04
Weighted average shares outstanding (in shares)	9,286,164	13,764,384	12,996,575
United States Copper Index Fund
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed positions	$ (1,134,850)	$ (1,318,188)	$ 1,468,825
Change in unrealized gain (loss) on open positions	1,249,725	(1,785,413)	793,363
Realized gain (loss) on short-term investments	59	0	(23)
Dividend income	24,418	13,343	0
Interest income	209,278	187,804	80,677
ETF transaction fees	6,300	4,550	4,550
Total income (loss)	354,930	(2,897,904)	2,347,392
Expenses
Management fees (Note 4)	68,586	76,916	67,217
Professional fees	75,053	61,767	48,451
Brokerage commissions	6,082	5,181	5,461
Directors' fees and insurance	2,320	2,100	1,823
Total expenses	152,041	145,964	122,952
Expense waiver (Note 4)	(67,628)	(51,300)	(40,153)
Net expenses	84,413	94,664	82,799
Net income (loss)	$ 270,517	$ (2,992,568)	$ 2,264,593
Net income (loss) per share (in dollars per share)	$ 1.10	$ (4.61)	$ 4.69
Net income (loss) per weighted average share (in dollars per share)	$ 0.44	$ (4.70)	$ 3.92
Weighted average shares outstanding (in shares)	615,753	636,986	577,397
USCF Crescent Crypto Index Fund
Gain (loss) on trading of commodity futures contracts:
Realized gain (loss) on closed positions	$ 0
Change in unrealized gain (loss) on open positions	0
Realized gain (loss) on foreign currency transactions	0
Change in unrealized gain (loss) on foreign currency translations	0
Interest income	0
Total income (loss)	0
Expenses
Management fees (Note 4)	0
Professional fees	0
Brokerage commissions	0
Directors' fees and insurance	0
Total expenses	0
Expense waiver (Note 4)	0
Net expenses	0
Net income (loss)	$ 0
Net income (loss) per share (in dollars per share)	$ 0
Net income (loss) per weighted average share (in dollars per share)	$ 0
Weighted average shares outstanding (in shares)	0

Condensed Statement of Changes

Condensed Statement of Changes in Capital - USD ($)	3 Months Ended				8 Months Ended	12 Months Ended
	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Balances, Beginning		$ 474,547,403		$ 515,622,796		$ 474,547,403	$ 515,622,796	$ 643,918,233
Additions						7,153,775	192,092,755	62,471,914
Redemptions						(276,645,904)	(158,233,087)	(219,373,092)
Net income (loss)						(8,143,415)	(74,935,061)	28,605,741
Balances, Ending	$ 196,911,859		$ 474,547,403		$ 196,911,859	$ 196,911,859	$ 474,547,403	$ 515,622,796
Shares Outstanding, Beginning		13,050,000		12,500,000		13,050,000	12,500,000	16,350,000
Additions						400,000	4,700,000	1,950,000
Redemptions						(7,900,000)	(4,150,000)	(5,800,000)
Shares Outstanding, Ending	5,550,000		13,050,000		5,550,000	5,550,000	13,050,000	12,500,000
United States Commodity Index Fund
Balances, Beginning		$ 463,042,508		$ 501,241,910		$ 463,042,508	$ 501,241,910	$ 636,292,824
Additions							183,685,233	49,804,005
Redemptions						(264,733,094)	(150,113,664)	(211,345,839)
Net income (loss)	$ 5,937,664	$ 16,243,487	$ (67,167,271)	$ 2,873,099		(8,413,932)	(71,770,971)	26,490,920
Balances, Ending	$ 189,895,482		$ 463,042,508		$ 189,895,482	$ 189,895,482	$ 463,042,508	$ 501,241,910
Shares Outstanding, Beginning		12,350,000		11,800,000		12,350,000	11,800,000	15,900,000
Additions							4,250,000	1,250,000
Redemptions						(7,200,000)	(3,700,000)	(5,350,000)
Shares Outstanding, Ending	5,150,000		12,350,000		5,150,000	5,150,000	12,350,000	11,800,000
Net Asset Value Per Share:
Net asset value, beginning of period (in dollars per share)		$ 37.49		$ 42.48		$ 37.49	$ 42.48	$ 40.02
Net asset value, end of period (in dollars per share)	$ 36.87		$ 37.49		$ 36.87	$ 36.87	$ 37.49	$ 42.48
United States Copper Index Fund
Balances, Beginning		$ 11,504,895		$ 12,629,903		$ 11,504,895	$ 12,629,903	$ 5,724,654
Additions						7,152,775	8,406,522	12,667,909
Redemptions						(11,912,810)	(6,538,962)	(8,027,253)
Net income (loss)	$ 681,730	$ 1,219,154	$ (769,679)	$ (1,206,325)		270,517	(2,992,568)	2,264,593
Balances, Ending	$ 7,015,377		$ 11,504,895		$ 7,015,377	$ 7,015,377	$ 11,504,895	$ 12,629,903
Shares Outstanding, Beginning		700,000		600,000		700,000	600,000	350,000
Additions						400,000	450,000	700,000
Redemptions						(700,000)	(350,000)	(450,000)
Shares Outstanding, Ending	400,000		700,000		400,000	400,000	700,000	600,000
Net Asset Value Per Share:
Net asset value, beginning of period (in dollars per share)		$ 16.44		$ 21.05		$ 16.44	$ 21.05	$ 16.36
Net asset value, end of period (in dollars per share)	$ 17.54		$ 16.44		$ 17.54	$ 17.54	$ 16.44	$ 21.05
USCF Crescent Crypto Index Fund
Balances, Beginning					$ 0
Additions					1,000
Net income (loss)					0	$ 0
Balances, Ending	$ 1,000				1,000	1,000
Sponsor
Balances, Beginning		$ 0		$ 0		0	$ 0	$ 0
Additions						1,000	1,000	0
Redemptions						0	(1,000)	0
Net income (loss)						0	0	0
Balances, Ending	$ 1,000		$ 0		$ 1,000	$ 1,000	$ 0	$ 0
Shares Outstanding, Beginning		0		0		0	0	0
Additions						0	0	0
Redemptions						0	0	0
Shares Outstanding, Ending	0		0		0	0	0	0
Sponsor | United States Commodity Index Fund
Balances, Beginning		$ 0		$ 0		$ 0	$ 0	$ 0
Additions							0	0
Redemptions						0	0	0
Net income (loss)						0	0	0
Balances, Ending	$ 0		$ 0		$ 0	$ 0	$ 0	$ 0
Shares Outstanding, Beginning		0		0		0	0	0
Additions							0	0
Redemptions						0	0	0
Shares Outstanding, Ending	0		0		0	0	0	0
Sponsor | United States Copper Index Fund
Balances, Beginning		$ 0		$ 0		$ 0	$ 0	$ 0
Additions						0	0	0
Redemptions						0	0	0
Net income (loss)						0	0	0
Balances, Ending	$ 0		$ 0		$ 0	$ 0	$ 0	$ 0
Shares Outstanding, Beginning		0		0		0	0	0
Additions						0	0	0
Redemptions						0	0	0
Shares Outstanding, Ending	0		0		0	0	0	0
Sponsor | USCF Crescent Crypto Index Fund
Balances, Beginning					$ 0
Additions					1,000
Net income (loss)					0
Balances, Ending	$ 1,000				1,000	$ 1,000
Shareholders
Balances, Beginning		$ 474,547,403		$ 515,622,796		474,547,403	$ 515,622,796	$ 643,918,233
Additions						7,152,775	192,091,755	62,471,914
Redemptions						(276,645,904)	(158,232,087)	(219,373,092)
Net income (loss)						(8,143,415)	(74,935,061)	28,605,741
Balances, Ending	$ 196,910,859		$ 474,547,403		$ 196,910,859	$ 196,910,859	$ 474,547,403	$ 515,622,796
Shares Outstanding, Beginning		13,050,000		12,500,000		13,050,000	12,500,000	16,350,000
Additions						400,000	4,700,000	1,950,000
Redemptions						(7,900,000)	(4,150,000)	(5,800,000)
Shares Outstanding, Ending	5,550,000		13,050,000		5,550,000	5,550,000	13,050,000	12,500,000
Shareholders | United States Commodity Index Fund
Balances, Beginning		$ 463,042,508		$ 501,241,910		$ 463,042,508	$ 501,241,910	$ 636,292,824
Additions							183,685,233	49,804,005
Redemptions						(264,733,094)	(150,113,664)	(211,345,839)
Net income (loss)						(8,413,932)	(71,770,971)	26,490,920
Balances, Ending	$ 189,895,482		$ 463,042,508		$ 189,895,482	$ 189,895,482	$ 463,042,508	$ 501,241,910
Shares Outstanding, Beginning		12,350,000		11,800,000		12,350,000	11,800,000	15,900,000
Additions							4,250,000	1,250,000
Redemptions						(7,200,000)	(3,700,000)	(5,350,000)
Shares Outstanding, Ending	5,150,000		12,350,000		5,150,000	5,150,000	12,350,000	11,800,000
Shareholders | United States Copper Index Fund
Balances, Beginning		$ 11,504,895		$ 12,629,903		$ 11,504,895	$ 12,629,903	$ 5,724,654
Additions						7,152,775	8,406,522	12,667,909
Redemptions						(11,912,810)	(6,538,962)	(8,027,253)
Net income (loss)						270,517	(2,992,568)	2,264,593
Balances, Ending	$ 7,015,377		$ 11,504,895		$ 7,015,377	$ 7,015,377	$ 11,504,895	$ 12,629,903
Shares Outstanding, Beginning		700,000		600,000		700,000	600,000	350,000
Additions						400,000	450,000	700,000
Redemptions						(700,000)	(350,000)	(450,000)
Shares Outstanding, Ending	400,000		700,000		400,000	400,000	700,000	600,000
Shareholders | USCF Crescent Crypto Index Fund
Balances, Beginning					$ 0
Additions					0
Net income (loss)					0
Balances, Ending	$ 0				$ 0	$ 0

Condensed Statements of Cash Fl

Condensed Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows from Operating Activities:
Net income (loss)	$ (8,143,415)	$ (74,935,061)	$ 28,605,741
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
(Increase) decrease in short-term investments	295,216	73,468,910	(73,764,126)
Unrealized (gain) loss on open futures contracts	(17,876,577)	23,145,242	(5,699,448)
(Increase) decrease in receivable from Sponsor	(16,330)	34,387	62,127
(Increase) decrease in dividends receivable	(15,534)	(11,339)	0
(Increase) decrease in interest receivable	4,320	10,558	(13,743)
(Increase) decrease in prepaid insurance	20,989	(35,750)	(820)
(Increase) decrease in ETF transaction fees receivable	(350)	700	(350)
Increase (decrease) in payable due to Broker	429,967	(442,429)	442,429
Increase (decrease) in management fees payable	(226,413)	40,440	(117,011)
Increase (decrease) in professional fees payable	(17,963)	20,887	(73,549)
Increase (decrease) in brokerage commissions payable	(9,500)	0	(10,710)
Increase (decrease) in directors' fees and payable	(7,540)	8,206	(128)
Net cash provided by (used in) operating activities	(25,563,130)	21,304,751	(50,569,588)
Cash Flows from Financing Activities:
Addition of shares	7,153,775	194,196,690	60,366,979
Redemption of shares	(274,802,204)	(160,352,516)	(223,268,046)
Net cash provided by (used in) financing activities	(267,648,429)	33,844,174	(162,901,067)
Net Increase (Decrease) in Cash and Cash Equivalents	(293,211,559)	55,148,925	(213,470,655)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period	490,625,457	435,476,532	648,947,187
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period	197,413,898	490,625,457	435,476,532
United States Commodity Index Fund
Cash Flows from Operating Activities:
Net income (loss)	(8,413,932)	(71,770,971)	26,490,920
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
(Increase) decrease in short-term investments	0	71,291,769	(71,291,769)
Unrealized (gain) loss on open futures contracts	(16,626,852)	21,360,954	(4,817,510)
(Increase) decrease in dividends receivable	(15,527)	(9,983)	0
(Increase) decrease in interest receivable	4,224	9,374	(12,337)
(Increase) decrease in prepaid insurance	21,039	(35,991)	(412)
(Increase) decrease in ETF transaction fees receivable	(350)	350
Increase (decrease) in management fees payable	(224,947)	41,641	(119,158)
Increase (decrease) in professional fees payable	(32,474)	64,879	(20,651)
Increase (decrease) in brokerage commissions payable	(9,500)	0	(10,710)
Increase (decrease) in directors' fees and payable	(7,506)	8,176	(256)
Net cash provided by (used in) operating activities	(25,305,825)	20,960,198	(49,781,883)
Cash Flows from Financing Activities:
Addition of shares	0	183,685,233	49,804,005
Redemption of shares	(262,889,394)	(152,234,093)	(215,240,793)
Net cash provided by (used in) financing activities	(262,889,394)	31,451,140	(165,436,788)
Net Increase (Decrease) in Cash and Cash Equivalents	(288,195,219)	52,411,338	(215,218,671)
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period	478,509,213	426,097,875	641,316,546
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period	190,313,994	478,509,213	426,097,875
United States Copper Index Fund
Cash Flows from Operating Activities:
Net income (loss)	270,517	(2,992,568)	2,264,593
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
(Increase) decrease in short-term investments	295,216	1,880,591	(2,175,807)
Unrealized (gain) loss on open futures contracts	(1,249,725)	1,785,413	(793,363)
(Increase) decrease in receivable from Sponsor	(16,330)	(11,146)	35,487
(Increase) decrease in dividends receivable	(7)	(1,356)	0
(Increase) decrease in interest receivable	96	915	(1,137)
(Increase) decrease in prepaid insurance	(50)	19	(203)
(Increase) decrease in ETF transaction fees receivable	0	350	(350)
Increase (decrease) in payable due to Broker	429,967	(442,429)	442,429
Increase (decrease) in management fees payable	(1,466)	831	2,244
Increase (decrease) in professional fees payable	14,511	885	(28,380)
Increase (decrease) in directors' fees and payable	(34)	69	121
Net cash provided by (used in) operating activities	(257,305)	221,574	(254,366)
Cash Flows from Financing Activities:
Addition of shares	7,152,775	10,511,457	10,562,974
Redemption of shares	(11,912,810)	(6,538,962)	(8,027,253)
Net cash provided by (used in) financing activities	(4,760,035)	3,972,495	2,535,721
Net Increase (Decrease) in Cash and Cash Equivalents	(5,017,340)	4,194,069	2,281,355
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period	12,116,244	7,922,175	5,640,820
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period	7,098,904	12,116,244	$ 7,922,175
USCF Crescent Crypto Index Fund
Cash Flows from Operating Activities:
Net income (loss)	0
Cash Flows from Financing Activities:
Addition of shares	1,000
Redemption of shares	0
Net cash provided by (used in) financing activities	1,000
Net Increase (Decrease) in Cash and Cash Equivalents	1,000
Total Cash, Cash Equivalents and Equity in Trading Accounts, beginning of period	0
Total Cash, Cash Equivalents and Equity in Trading Accounts, end of period	$ 1,000	$ 0

Condensed Statements of Cash _2

Condensed Statements of Cash Flows (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of Cash and Cash Equivalents:
Cash and Cash Equivalents	$ 169,737,534	$ 438,410,816	$ 401,910,152
Equity in Trading Accounts:
Cash and Cash Equivalents	27,676,364	52,214,641	33,566,380
Total Cash, Cash Equivalents and Equity in Trading Accounts	197,413,898	490,625,457	435,476,532	$ 648,947,187
Sponsor Capital Account	1,000	0
United States Commodity Index Fund
Components of Cash and Cash Equivalents:
Cash and Cash Equivalents	163,036,680	427,657,030	393,488,946
Equity in Trading Accounts:
Cash and Cash Equivalents	27,277,314	50,852,183	32,608,929
Total Cash, Cash Equivalents and Equity in Trading Accounts	190,313,994	478,509,213	426,097,875	641,316,546
Sponsor Capital Account	0	0
United States Copper Index Fund
Components of Cash and Cash Equivalents:
Cash and Cash Equivalents	6,699,854	10,753,786	7,124,096
Equity in Trading Accounts:
Cash and Cash Equivalents	399,050	1,362,458	798,079
Total Cash, Cash Equivalents and Equity in Trading Accounts	7,098,904	12,116,244	$ 7,922,175	$ 5,640,820
Sponsor Capital Account	0	0
USCF Crescent Crypto Index Fund
Components of Cash and Cash Equivalents:
Cash and Cash Equivalents	1,000
Equity in Trading Accounts:
Cash and Cash Equivalents	0
Total Cash, Cash Equivalents and Equity in Trading Accounts	1,000	0
Sponsor Capital Account	1,000
United States Commodity Index Funds Trust
Components of Cash and Cash Equivalents:
Cash and Cash Equivalents	$ 169,737,534	$ 438,410,816

ORGANIZATION AND BUSINESS

ORGANIZATION AND BUSINESS	12 Months Ended
	Dec. 31, 2019
ORGANIZATION AND BUSINESS
ORGANIZATION AND BUSINESS	NOTE 1 - ORGANIZATION AND BUSINESS The United States Commodity Index Funds Trust (the “Trust”) was organized as a Delaware statutory trust on December 21, 2009. The Trust is a series trust formed pursuant to the Delaware Statutory Trust Act and includes the United States Commodity Index Fund (“USCI”) and a commodity pool formed on April 1, 2010 and first made available to the public on August 10, 2010, the United States Copper Index Fund (“CPER”), a commodity pool formed on November 26, 2010 and first made available to the public on November 15, 2011. A new series of the Trust, the USCF Crescent Crypto Index Fund (“XBET”) was formed on May 7, 2019. XBET is currently in registration and has not commenced operations. Additional series of the Trust included: the United States Agriculture Index Fund (“USAG”), which liquidated all of its assets on September 12, 2018 and distributed cash pro rata to all remaining shareholders on September 13, 2018, and the USCF Canadian Crude Oil Index Fund (“UCCO”), which never commenced operations and was terminated as a series on May 8, 2019. USCI and CPER each issue shares (“shares”) that may be purchased and sold on the NYSE Arca, Inc. (“NYSE Arca”). USCI and CPER are collectively referred to herein as the “Trust Series.” The Trust, and each of its series operates pursuant to the Fourth Amended and Restated Declaration of Trust and Trust Agreement dated as of December 15, 2017 (the “Trust Agreement”). United States Commodity Funds LLC (“USCF”) is the sponsor of the Trust and each of its series and is also responsible for the management of the Trust and the Trust Series. For purposes of the financial statement presentation, unless specified otherwise, all references will be to the Trust Series. USCF has the power and authority to establish and designate one or more series and to issue shares thereof, from time to time as it deems necessary or desirable. USCF has exclusive power to fix and determine the relative rights and preferences as between the shares of any series as to right of redemption, special and relative rights as to dividends and other distributions and on liquidation, conversion rights, and conditions under which the series shall have separate voting rights or no voting rights. The term for which the Trust is to exist commenced on the date of the filing of the Certificate of Trust, and the Trust and any Trust Series will exist in perpetuity, unless earlier terminated in accordance with the provisions of the Trust Agreement. Separate and distinct records must be maintained for each Trust Series and the assets associated with a Trust Series must be held in such separate and distinct records (directly or indirectly, including a nominee or otherwise) and accounted for in such separate and distinct records separately from the assets of any other Trust Series. Each Trust Series is separate from all other Trust Series created as series of the Trust in respect of the assets and liabilities allocated to that Trust Series and represents a separate investment portfolio of the Trust. The sole Trustee of the Trust is Wilmington Trust Company (the “Trustee”), a Delaware banking corporation. The Trustee is unaffiliated with USCF. The Trustee’s duties and liabilities with respect to the offering of shares and the management of the Trust are limited to its express obligations under the Trust Agreement. USCF is a member of the National Futures Association (the “NFA”) and became a commodity pool operator (“CPO”) registered with the Commodity Futures Trading Commission (the “CFTC”) effective December 1, 2005. The Trust and each Trust Series have a fiscal year ending on December 31. USCF is also the general partner of the United States Oil Fund, LP (“USO”), the United States Natural Gas Fund, LP (“UNG”), the United States 12 Month Oil Fund, LP (“USL”) and the United States Gasoline Fund, LP (“UGA”), which listed their limited partnership shares on the American Stock Exchange (the “AMEX”) under the ticker symbols “USO” on April 10, 2006, “UNG” on April 18, 2007, “USL” on December 6, 2007 and “UGA” on February 26, 2008, respectively. As a result of the acquisition of the AMEX by NYSE Euronext, each of USO’s, UNG’s, USL’s and UGA’s shares commenced trading on the NYSE Arca on November 25, 2008. USCF is also the general partner of the United States 12 Month Natural Gas Fund, LP (“UNL”) and the United States Brent Oil Fund, LP (“BNO”), which listed their limited partnership shares on the NYSE Arca under the ticker symbols “UNL” on November 18, 2009 and “BNO” on June 2, 2010, respectively. USCF previously served as the general partner for the United States Short Oil Fund, LP (“DNO”) and the United States Diesel-Heating Oil Fund, LP (“UHN”), both of which were liquidated in 2018. In addition, USCF is the sponsor of the USCF Funds Trust, a Delaware statutory trust, and each of its series, the United States 3x Oil Fund (“USOU”) and the United States 3x Short Oil Fund (“USOD”), which listed their shares on the NYSE Arca on July 20, 2017 under the ticker symbols “USOU” and “USOD”, respectively. Each of USOU and USOD liquidated all of its assets and distributed cash pro rata to all remaining shareholders in December 2019. USO, UNG, UGA, UNL, USL, BNO, USCI and CPER are referred to collectively herein as the “Related Public Funds.” Effective as of May 1, 2012, each of USCI and CPER issue shares to certain authorized purchasers (“Authorized Participants”) by offering baskets consisting of 50,000 shares (“Creation Baskets”) through ALPS Distributors, Inc., as the marketing agent (the “Marketing Agent”). Prior to May 1, 2012, each of USCI and CPER issued shares to Authorized Participants by offering baskets consisting of 100,000 shares through the Marketing Agent. The purchase price for a Creation Basket is based upon the net asset value ("NAV") of a share calculated shortly after the close of the core trading session on the NYSE Arca on the day the order to create the basket is properly received. Authorized Participants pay each Trust Series a $350 transaction fee for each order placed to create one or more Creation Baskets or to redeem one or more baskets (“Redemption Baskets”), consisting of 50,000 shares. Shares may be purchased or sold on a nationally recognized securities exchange in smaller increments than a Creation Basket or Redemption Basket. Shares purchased or sold on a nationally recognized securities exchange are not purchased or sold at the per share NAV of each Trust Series but rather at market prices quoted on such exchange.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") as detailed in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. Each Trust Series is an investment company and follows the accounting and reporting guidance in FASB Topic 946. The Trust financial statements included its respective series of funds financial statements including USCI, CPER, USAG, UCCO and XBET through December 31, 2019. For reporting commencing with the December 31, 2019 reporting period, and in conjunction with the liquidation of USAG on September 12, 2018 and the withdrawal of UCCO’s registration on December 19, 2018, the USAG and UCCO financial statements have not been included, but are included in the overall Trust financial statements for the applicable reporting periods. Revenue Recognition Commodity futures contracts, forward contracts, physical commodities and related options are recorded on the trade date. All such transactions are recorded on the identified cost basis and marked to market daily. Unrealized gains or losses on open contracts are reflected in the statements of financial condition and represent the difference between the original contract amount and the market value (as determined by exchange settlement prices for futures contracts and related options and cash dealer prices at a predetermined time for forward contracts, physical commodities, and their related options) as of the last business day of the year or as of the last date of the financial statements. Changes in the unrealized gains or losses between periods are reflected in the statements of operations. Each Trust Series earns income on funds held at the custodian or a futures commission merchant (“FCM”) at prevailing market rates earned on such investments. Brokerage Commissions Brokerage commissions on all open commodity futures contracts are accrued on a full-turn basis. Income Taxes The Trust Series are not subject to federal income taxes; each investor reports his/her allocable share of income, gain, loss deductions or credits on his/her own income tax return. In accordance with U.S. GAAP, each Trust Series is required to determine whether a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any tax related appeals or litigation processes, based on the technical merits of the position. Each Trust Series files an income tax return in the U.S. federal jurisdiction and may file income tax returns in various U.S. states. None of the Trust Series is subject to income tax return examinations by major taxing authorities for years before 2016. The tax benefit recognized is measured as the largest amount of benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. De-recognition of a tax benefit previously recognized results in each Trust Series recording a tax liability that reduces net assets. However, each Trust Series' conclusions regarding this policy may be subject to review and adjustment at a later date based on factors including, but not limited to, on-going analysis of and changes to tax laws, regulations and interpretations thereof. Each Trust Series recognizes interest accrued related to unrecognized tax benefits and penalties related to unrecognized tax benefits in income tax fees payable, if assessed. No interest expense or penalties have been recognized as of and for the year ended December 31, 2019 for any Trust Series. Creations and Redemptions Effective as of May 1, 2012, Authorized Participants may purchase Creation Baskets or redeem Redemption Baskets for USCI and CPER only in blocks of 50,000 shares at a price equal to the NAV of the shares calculated shortly after the close of the core trading session on the NYSE Arca on the day the order is placed. Each Trust Series receives or pays the proceeds from shares sold or redeemed within two business days after the trade date of the purchase or redemption. The amounts due from Authorized Participants are reflected in each Trust Series’ statements of financial condition as receivable for shares sold and amounts payable to Authorized Participants upon redemption are reflected as payable for shares redeemed. Trust Capital and Allocation of Income and Losses Profit or loss shall be allocated among the shareholders of each Trust Series in proportion to the number of shares each investor holds as of the close of each month. USCF may revise, alter or otherwise modify this method of allocation as described in the Trust Agreement . Calculation of Per Share NAV Each Trust Series’ per share NAV is calculated on each NYSE Arca trading day by taking the current market value of its total assets, subtracting any liabilities and dividing that amount by the total number of shares outstanding. Each Trust Series uses the closing prices on the relevant Futures Exchanges (as defined in Note 3 below) of the Applicable Benchmark Component Futures Contracts (as defined in Note 3 below) that at any given time make up the Applicable Index (as defined in Note 3 below) (determined at the earlier of the close of such exchange or 2:30 p.m. New York time) for the contracts traded on the Futures Exchanges, but calculates or determines the value of all other investments of each Trust Series using market quotations, if available, or other information customarily used to determine the fair value of such investments. Net Income (Loss) Per Share Net income (loss) per share is the difference between the per share NAV at the beginning of each period and at the end of each period. The weighted average number of shares outstanding was computed for purposes of disclosing net income (loss) per weighted average share. The weighted average shares are equal to the number of shares outstanding at the end of the period, adjusted proportionately for shares added and redeemed based on the amount of time the shares were outstanding during such period. As of December 31, 2019, USCF held 5 shares of USCI and 40 shares of CPER. Offering Costs Offering costs incurred in connection with the registration of shares prior to the commencement of the offering are borne by USCF. Offering costs incurred in connection with the registration of additional shares after the commencement of the offering are borne by each Trust Series. These costs include registration fees paid to regulatory agencies and all legal, accounting, printing and other expenses associated with such offerings. Costs borne by the Trust Series after the commencement of an offering are accounted for as a deferred charge and thereafter amortized to expense over twelve months on a straight-line basis or a shorter period if warranted. Cash Equivalents Cash equivalents include money market funds and overnight deposits or time deposits with original maturity dates of six months or less. Reclassification Certain amounts in the accompanying financial statements were reclassified to conform to the current presentation. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires USCF to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

TRUST SERIES

TRUST SERIES	12 Months Ended
	Dec. 31, 2019
TRUST SERIES
TRUST SERIES	NOTE 3 - TRUST SERIES In connection with the execution of the First Trust Agreement on April 1, 2010, USCI was designated as the first series of the Trust. USCF contributed $1,000 to the Trust upon its formation on December 21, 2009, representing an initial contribution of capital to the Trust. Following the designation of USCI as the first series of the Trust, the initial capital contribution of $1,000 was transferred from the Trust to USCI and deemed an initial contribution to USCI. In connection with the commencement of USCI’s initial offering of shares, USCF received 20 Sponsor Shares of USCI in exchange for the previously received capital contribution, representing a beneficial ownership interest in USCI. On July 30, 2010, USCI received a notice of effectiveness from the SEC for its registration of 50,000,000 shares on Form S-1 with the SEC. On August 10, 2010, USCI listed its shares on the NYSE Arca under the ticker symbol “USCI”. USCI established its initial per share NAV by setting the price at $50.00 and issued 100,000 shares in exchange for $5,000,000 on August 10, 2010. USCI also commenced investment operations on August 10, 2010 by purchasing Futures Contracts traded on the Futures Exchanges. In order to satisfy NYSE Arca listing standards that at least 100,000 shares be outstanding at the beginning of the trading day on the NYSE Arca, USCF purchased the initial Creation Basket from the initial Authorized Participant at the initial offering price. The $1,000 fee that would otherwise be charged to the Authorized Participant in connection with an order to create or redeem was waived in connection with the initial Creation Basket. USCF held such initial Creation Basket until September 3, 2010, at which time the initial Authorized Participant repurchased the shares comprising such basket in accordance with the specified conditions noted above. On September 14, 2011, USCF redeemed the 20 Sponsor Shares of USCI and, on September 19, 2011, USCF purchased 5 shares of USCI in the open market. In connection with the Second Amended and Restated Trust Agreement dated November 10, 2010, USAG and CPER were designated as additional series of the Trust. Following the designation of the additional series, USCF made an initial capital contribution to the Trust. On November 10, 2010, the Trust transferred $1,000 to each of USAG and CPER, which was deemed a capital contribution to each series. On November 14, 2011, USCF received 40 Sponsor Shares of CPER in exchange for the previously received capital contribution, representing a beneficial interest in CPER. On December 7, 2011, USCF redeemed the 40 Sponsor Shares of CPER and purchased 40 shares of CPER in the open market. On April 13, 2012, USCF received 40 Sponsor Shares of USAG in exchange for the previously received capital contribution, representing a beneficial interest in USAG. On June 28, 2012, USCF redeemed the 40 Sponsor Shares of USAG and on October 3, 2012, purchased 5 shares of USAG on the open market. USCF redeemed all Sponsor Shares of USAG on September 7, 2018. On September 7, 2018, at the close of markets, USAG ceased all trading and all of USAG’s assets were liquidated on September 12, 2018. Further, on May 8, 2019, USCF contributed $1,000 to XBET in exchange for 20 Sponsor Shares of the series, which was deemed an initial capital contribution to the series. CPER and USAG received notice of effectiveness from the SEC for its registration of 30,000,000 CPER shares and 20,000,000 USAG shares on September 6, 2011. The order to permit listing CPER and USAG on the NYSE Arca was received on October 20, 2011. On November 15, 2011, CPER listed its shares on the NYSE Arca under the ticker symbol “CPER.” CPER established its initial per share NAV by setting the price at $25 and issued 100,000 shares to the initial Authorized Participant, Merrill Lynch Professional Clearing Corp., in exchange for $2,500,000 in cash on November 15, 2011. The $1,000 fee that would otherwise be charged to the Authorized Participant in connection with an order to create or redeem was waived in connection with the initial Creation Basket. USCF and the Trustee entered into the Fourth Amended and Restated Declaration of Trust and Trust Agreement effective as of December 15, 2017. Additional series of the Trust included: the United States Agriculture Index Fund ("USAG"), which liquidated all of its assets on September 12 , 2018 and distributed cash pro rata to all remaining shareholders on September 13, 2018 and the USCF Canadian Crude Oil Index Fund (“UCCO”), which never commenced operations and was terminated as a series on May 8, 2019. USCI’s Investment Objective USCI invests in futures contracts for commodities that are currently traded on the New York Mercantile Exchange (the “NYMEX”), ICE Futures (“ICE Futures”), Chicago Board of Trade (“CBOT”), Chicago Mercantile Exchange (“CME”), London Metal Exchange (“LME”), Commodity Exchange, Inc. (“COMEX”) or on other foreign exchanges (the NYMEX, ICE Futures, CBOT, CME, LME, COMEX and other foreign exchanges, collectively, the “Futures Exchanges”) (such futures contracts, collectively, “Futures Contracts”) and, to a lesser extent, in order to comply with regulatory requirements or in view of market conditions, other commodity-based contracts and instruments such as cash-settled options on Futures Contracts, forward contracts relating to commodities, cleared swap contracts and other non-exchange traded over-the-counter (“OTC”) transactions that are based on the price of commodities and Futures Contracts (collectively, “Other Commodity-Related Investments”). The investment objective of USCI is for the daily changes in percentage terms of its shares’ per share NAV to reflect the daily changes in percentage terms of the SummerHaven Dynamic Commodity Index Total Return SM USCI seeks to achieve its investment objective by investing in Futures Contracts and Other Commodity-Related Investments such that daily changes in its’ per share NAV closely track the daily changes in the price of the SDCI. USCI’s positions in Commodity Interests are rebalanced on a monthly basis in order to track the changing nature of the SDCI. If Futures Contracts relating to a particular commodity remain in the SDCI from one month to the next, such Futures Contracts are rebalanced to the 7.14% target weight. Specifically, on the Selection Date, it will be determined if a current Benchmark Component Futures Contract will be replaced by a new Futures Contract in either the same or different underlying commodity as a Benchmark Component Futures Contract for the following month, in which case USCI’s investments would have to be changed accordingly. In order that USCI’s trading does not unduly cause extraordinary market movements, and to make it more difficult for third parties to profit by trading based on market movements that could be expected from changes in the Benchmark Component Futures Contracts, USCI’s investments typically are not rebalanced entirely on a single day, but rather typically rebalanced over a period of four days. After fulfilling the margin and collateral requirements with respect to its Commodity Interests, USCF invests the remainder of USCI’s proceeds from the sale of shares in Treasuries or cash equivalents, and/or merely hold such assets in cash (generally in interest-bearing accounts). USCI’s shares began trading on August 10, 2010. As of December 31, 2019, USCI held 880 Futures Contracts on the NYMEX, 716 Futures Contracts on the ICE Futures, 644 Futures Contracts on the CBOT, 480 Futures Contracts on the CME, 1,903 Futures Contracts on the LME and 342 Futures Contracts on the COMEX, totaling 4,965 futures contracts. CPER’s Investment Objective The investment objective of CPER is for the daily changes in percentage terms of its shares’ per share NAV to reflect the daily changes in percentage terms of the SummerHaven Copper Index Total Return SM CPER’s shares began trading on November 15, 2011. As of December 31, 2019, CPER held 100 Futures Contracts on the COMEX. Other Defined Terms – Trust Series The SDCI and the SCI are referred to throughout these Notes to Financial Statements collectively as the “Applicable Index” or “Indices.” Benchmark Component Futures Contracts, Benchmark Component Copper Futures Contracts and Benchmark Component Agriculture Futures Contracts are referred to throughout these Notes to Financial Statements collectively as “Applicable Benchmark Component Futures Contracts.” Other Commodity-Related Investments and Other Copper-Related Investments are referred to throughout these Notes to Financial Statements collectively as “Other Related Investments.” Trading Advisor and Trustee The Trust Series’ trading advisor is SummerHaven Investment Management, LLC (“SummerHaven”), a Delaware limited liability company that is registered as a commodity trading advisor and CPO with the CFTC and is a member of the NFA. In addition, SummerHaven is registered as an investment adviser under the Investment Advisers Act of 1940 with the SEC. SummerHaven provides advisory services to USCF with respect to the Applicable Index of each Trust Series and the investment decisions of each Trust Series. The Trustee accepts service of legal process on the Trust in the State of Delaware and makes certain filings under the Delaware Statutory Trust Act. The Trustee does not owe any other duties to the Trust, USCF or the shareholders.

FEES PAID BY EACH TRUST SERIES

FEES PAID BY EACH TRUST SERIES AND RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2019
FEES PAID BY EACH TRUST SERIES AND RELATED PARTY TRANSACTIONS
FEES PAID BY EACH TRUST SERIES AND RELATED PARTY TRANSACTIONS	NOTE 4 — FEES PAID BY EACH TRUST SERIES AND RELATED PARTY TRANSACTIONS USCF Management Fee Under the Trust Agreement, USCF is responsible for investing the assets of each Trust Series in accordance with the objectives and policies of each such Trust Series. In addition, USCF has arranged for one or more third parties to provide trading advisory, administrative, custody, accounting, transfer agency and other necessary services to each Trust Series. For these services, each of USCI and CPER is contractually obligated to pay USCF a fee, which is paid monthly, equal to 0.95% per annum of average daily total net assets. Effective January 1, 2016, USCF permanently lowered the management fee to 0.80% (80 basis points) per annum of average daily total net assets for USCI and 0.65% (65 basis points) per annum of average daily total net assets for CPER. Trustee Fee The Trustee is the Delaware trustee of the Trust. In connection with the Trustee’s services, USCF is responsible for paying the Trustee’s annual fee in the amount of $3,000. Ongoing Registration Fees and Other Offering Expenses Each Trust Series pays the costs and expenses associated with the ongoing registration of its shares subsequent to the initial offering. These costs include registration or other fees paid to regulatory agencies in connection with the offer and sale of shares, and all legal, accounting, printing and other expenses associated with such offer and sale. During the years ended December 31, 2019, 2018 and 2017, none of the Trust Series incurred any registration fees or other offering expenses. Independent Directors’ and Officers’ Expenses Each Trust Series is responsible for paying its portion of the directors’ fees and directors’ and officers’ liability insurance for such Trust Series and the Related Public Funds. Each Trust Series shares the fees and expenses on a pro rata basis with each other Trust Series and each Related Public Fund, as described above, based on the relative assets of each fund computed on a daily basis. These fees and expenses for the year ended December 31, 2019 amounted to be a total of $556,951 for the Trust Series and the Related Public Funds. USCI's portion of such fees and expenses for the year ended December 31, 2019 was $108,435 and CPER's portion of such fees and expenses for the year ended December 31, 2019 was $2,320. For the year ended December 31, 2018, these fees and expenses were $521,689 for the Trust Series and the Related Public Funds. USCI’s portion of such fees and expenses for the year ended December 31, 2018 was $91,761, CPER’s portion of such fees and expenses for the year ended December 31, 2018 was $2,100 and USAG’s portion of such fees and expenses for the year ended December 31, 2018 was $917. Investor Tax Reporting Cost The fees and expenses associated with each Trust Series’ audit expenses and tax accounting and reporting requirements are paid by such Trust Series. These costs amounted to a total of $476,864 for the year ended December 31, 2019 for USCI and $75,053 for the year ended December 31, 2019 for CPER. Tax reporting costs fluctuate between years due to the number of shareholders during any given year. Other Expenses and Fees and Expense Waivers In addition to the fees described above, each Trust Series pays all brokerage fees and other expenses in connection with the operation of such Trust Series, excluding costs and expenses paid by USCF as outlined in Note 5 – Contracts and Agreements Note 5 – Contracts and Agreements

CONTRACTS AND AGREEMENTS

CONTRACTS AND AGREEMENTS	12 Months Ended
	Dec. 31, 2019
CONTRACTS AND AGREEMENTS
CONTRACTS AND AGREEMENTS	NOTE 5 — CONTRACTS AND AGREEMENTS Marketing Agent Agreement USCF and the Trust, each on its own behalf and on behalf of each Trust Series, are party to a marketing agent agreement, dated as of July 22, 2010, as amended from time to time, with the Marketing Agent, whereby the Marketing Agent provides certain marketing services for each Trust Series as outlined in the agreement. The fee of the Marketing Agent, which is borne by USCF, is equal to 0.06% on each Trust Series’ assets up to $3 billion and 0.04% on each Trust Series’ assets in excess of $3 billion. In no event may the aggregate compensation paid to the Marketing Agent and any affiliate of USCF for distribution-related services exceed 10% of the gross proceeds of each Trust Series’ offering. The above fee does not include website construction and development, which are also borne by USCF. Brown Brothers Harriman & Co. Agreements USCF and the Trust, on its own behalf and on behalf of each Trust Series, are also party to a custodian agreement, dated July 22, 2010, as amended from time to time, with Brown Brothers Harriman & Co. (“BBH&Co.”) and USCF, whereby BBH&Co. holds investments on behalf of each Trust Series. USCF pays the fees of the custodian, which are determined by the parties from time to time. In addition, USCF and the Trust, on its own behalf and on behalf of each Trust Series, are party to an administrative agency agreement, dated July 22, 2010, as amended from time to time, with BBH&Co., whereby BBH&Co. acts as the administrative agent, transfer agent and registrar for each Trust Series. USCF also pays the fees of BBH&Co. for its services under such agreement and such fees are determined by the parties from time to time. Currently, USCF pays BBH&Co. for its services, in the foregoing capacities, a minimum amount of $75,000 annually for its custody, fund accounting and fund administration services rendered to each Trust Series and each of the Related Public Funds, as well as a $20,000 annual fee for its transfer agency services. In addition, USCF pays BBH&Co. an asset-based charge of (a) 0.06% for the first $500 million of the Related Public Funds’ combined net assets, (b) 0.0465% for the Related Public Funds’ combined net assets greater than $500 million but less than $1 billion, and (c) 0.035% once the Related Public Funds’ combined net assets exceed $1 billion. The annual minimum amount will not apply if the asset-based charge for all accounts in the aggregate exceeds $75,000. USCF also pays BBH&Co. transaction fees ranging from $7 to $15 per transaction. Brokerage and Futures Commission Merchant Agreements On July 7, 2014, the Trust on behalf of each Trust Series entered into a Futures and Cleared Swaps Agreement with Wells Fargo Securities, LLC (“WFS”). In addition, the Trust on behalf of each of USCI and CPER entered into a Futures and Cleared Derivatives Transactions Customer Account Agreement with RBC, in June of 2018. Each of RBC and WFS are referred to as a “Futures Commissions Merchant” or “FCM.” Each of the Trust’s FCM agreements require the FCM to provide services to the applicable Trust Series in connection with the purchase and sale of Futures Contracts and Other Related Investments that may be purchased and sold by or through the FCM for the applicable Trust Series’ account. In accordance with each agreement, the FCM charges the applicable Trust Series commissions of approximately $7 to $8 per round-turn trade, including applicable exchange, clearing and NFA fees for Futures Contracts and options on Futures Contracts. Such fees include those incurred when purchasing Futures Contracts and options on Futures Contracts when each Trust Series issues shares as a result of a Creation Basket, as well as fees incurred when selling Futures Contracts and options on Futures Contracts when each Trust Series redeems shares as a result of a Redemption Basket. Such fees are also incurred when Futures Contracts and options on Futures Contracts are purchased or redeemed for the purpose of rebalancing the portfolio. Each Trust Series also incurs commissions to brokers for the purchase and sale of Futures Contracts, Other Commodity-Related Investments or short-term obligations of the United States of two years or less (“Treasuries”). USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Year Ended For the Year Ended For the Year Ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Total commissions accrued to brokers ​ $ 453,997 ​ $ 539,884 ​ $ 527,610 ​ Total commissions as annualized percentage of average total net assets ​ 0.13 % 0.09 % 0.10 % Commissions accrued as a result of rebalancing ​ $ 429,823 ​ $ 508,021 ​ $ 505,199 ​ Percentage of commissions accrued as a result of rebalancing ​ 94.68 % 94.10 % 95.75 % Commissions accrued as a result of creation and redemption activity ​ $ 24,174 ​ $ 31,863 ​ $ 22,411 ​ Percentage of commissions accrued as a result of creation and redemption activity ​ 5.32 % 5.90 % 4.25 % ​ The decrease in total commissions accrued to brokers for the year ended December 31, 2019, compared to the year ended December 31, 2018, was due primarily to a lower number of contracts held and traded. The increase in total commissions accrued to brokers for the year ended December 31, 2018, compared to the year ended December 31, 2017, was due primarily to higher number of futures contracts being held and traded. However, there can be no assurance that commission costs and portfolio turnover will not cause commission expenses to rise in future quarters. CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Year Ended For the Year Ended For the Year Ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Total commissions accrued to brokers ​ $ 6,082 ​ $ 5,181 ​ $ 5,461 ​ Total commissions as annualized percentage of average total net assets ​ 0.06 % 0.04 % 0.05 % Commissions accrued as a result of rebalancing ​ $ 5,353 ​ $ 4,205 ​ $ 4,390 ​ Percentage of commissions accrued as a result of rebalancing ​ 88.01 % 81.16 % 80.39 % Commissions accrued as a result of creation and redemption activity ​ $ 729 ​ $ 976 ​ $ 1,071 ​ Percentage of commissions accrued as a result of creation and redemption activity ​ 11.99 % 18.84 % 19.61 % ​ The increase in total commissions accrued to brokers for the year ended December 31, 2019, compared to the year ended December 31, 2018, was due primarily to a higher number of contracts held and traded. The decrease in total commissions accrued to brokers for the year ended December 31, 2018, compared to the year ended December 31, 2017, was due primarily to lower number of futures contracts being held and traded. However, there can be no assurance that commission costs and portfolio turnover will not cause commission expenses to rise in future quarters. SummerHaven Agreements USCF is party to an Amended and Restated Advisory Agreement, dated as of May 1, 2018, as amended from time to time, with SummerHaven, whereby SummerHaven provides advisory services to USCF with respect to the Applicable Index for each Trust Series and investment decisions for each Trust Series. SummerHaven’s advisory services include, but are not limited to, general consultation regarding the calculation and maintenance of the Applicable Index for each Trust Series, anticipated changes to each Applicable Index and the nature of each Applicable Index’s current or anticipated component securities. For these services, USCF pays SummerHaven a fee based on a percentage of the average total net assets of each Trust Series. Prior to May 1, 2018, for USCI, the fee was equal to the percentage fees paid to USCF minus 0.14%, with that result multiplied by 0.5, minus 0.06% to arrive at the actual fee paid. Prior to May 1, 2018, for CPER, the fee was equal to the percentage fees paid to USCF minus 0.18%, with that result multiplied by 0.5, minus 0.6% to arrive at the actual fee paid. USCF and SummerHaven amended and restated the existing Advisory Agreement effective as of May 1, 2018. As of May 1, 2018, USCF pays SummerHaven an annual fee of $15,000 per each Trust Series as well as an annual fee of 0.06% of the average daily total net assets of each Trust Series. USCF is also party to an Amended and Restated Licensing Agreement, dated as of May 1, 2018, as amended from time to time, with SummerHaven and SHIM, pursuant to which SHIM grants a license to USCF for the use of certain names and marks, including the Applicable Index for each Trust Series in exchange for a fee to be paid by USCF to SHIM. For the year ended December 31, 2017, USCF paid licensing fees to SummerHaven equal to an annual fee of $15,000 per each Trust Series for the, plus an annual fee of 0.06% of the average daily total net assets of each Trust Series. As a result of the amendment and restatement of the Licensing Agreement and Advisory Agreement in May of 2018, the fees required to be paid by USCF to SummerHaven and SHIM in the aggregate have not changed from the aggregate fees paid by USCF under the two agreements prior to the amendment and restatement.

FINANCIAL INSTRUMENTS, OFF-BALA

FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2019
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES	NOTE 6 — FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES Each Trust Series engages in the trading of futures contracts, options on futures contracts, cleared swaps and OTC swaps (collectively, “derivatives”). As such, each Trust Series is exposed to both market risk, which is the risk arising from changes in the market value of the contracts, and credit risk, which is the risk of failure by another party to perform according to the terms of a contract. Each Trust Series may enter into futures contracts, options on futures contracts and cleared swaps to gain exposure to changes in the value of an underlying commodity. A futures contract obligates the seller to deliver (and the purchaser to accept) the future delivery of a specified quantity and type of a commodity at a specified time and place. Some futures contracts may call for physical delivery of the asset, while others are settled in cash. The contractual obligations of a buyer or seller may generally be satisfied by taking or making physical delivery of the underlying commodity or by making an offsetting sale or purchase of an identical futures contract on the same or linked exchange before the designated date of delivery. Cleared swaps are agreements that are eligible to be cleared by a clearinghouse, e.g., ICE Clear Europe, and provide the efficiencies and benefits that centralized clearing on an exchange offers to traders of futures contracts, including credit risk intermediation and the ability to offset positions initiated with different counterparties. The purchase and sale of futures contracts, options on futures contracts and cleared swaps require margin deposits with an FCM. Additional deposits may be necessary for any loss on contract value. The Commodity Exchange Act requires an FCM to segregate all customer transactions and assets from the FCM’s proprietary activities. Futures contracts, options on futures contracts and cleared swaps involve, to varying degrees, elements of market risk (specifically commodity price risk) and exposure to loss in excess of the amount of variation margin. The face or contract amounts reflect the extent of the total exposure each Trust Series has in the particular classes of instruments. Additional risks associated with the use of futures contracts are an imperfect correlation between movements in the price of the futures contracts and the market value of the underlying securities and the possibility of an illiquid market for a futures contract. Buying and selling options on futures contracts exposes investors to the risks of purchasing or selling futures contracts. All of the futures contracts held by each Trust Series through December 31, 2019 were exchange-traded. The risks associated with exchange-traded contracts are generally perceived to be less than those associated with OTC swaps since, in OTC swaps, a party must rely solely on the credit of its respective individual counterparties. However, in the future, if each Trust Series were to enter into non-exchange traded contracts (including Exchange for Related Position or EFRP), it would be subject to the credit risk associated with counterparty non-performance. The credit risk from counterparty non-performance associated with such instruments is the net unrealized gain, if any, on the transaction. Currently, each Trust Series has credit risk under its futures contracts since the sole counterparty to all domestic and foreign futures contracts is the clearinghouse for the exchange on which the relevant contracts are traded. In addition, each Trust Series bears the risk of financial failure by the clearing broker. A Trust Series' cash and other property, such as Treasuries, deposited with an FCM are considered commingled with all other customer funds, subject to the FCM’s segregation requirements. In the event of an FCM’s insolvency, recovery may be limited to a pro rata share of segregated funds available. It is possible that the recovered amount could be less than the total of cash and other property deposited. The insolvency of an FCM could result in the complete loss of a Trust Series' assets posted with that FCM; however, the majority of each Trust Series' assets are held in investments in Treasuries, cash and/or cash equivalents with the Trust Series' custodian and would not be impacted by the insolvency of an FCM. The failure or insolvency of the Trust Series' custodian, however, could result in a substantial loss of each Trust Series' assets. USCF may invest a portion of each Trust Series' cash in money market funds that seek to maintain a stable per share NAV. Each Trust Series may be exposed to any risk of loss associated with an investment in such money market funds. As of December 31, 2019, USCI and CPER held investments in money market funds in the amounts of $19,500,000 and $620,000, respectively. As of December 31, 2018, USCI and CPER held investments in money market funds in the amounts of $6,400,000 and $855,000, respectively. Each Trust Series also holds cash deposits with its custodian. Pursuant to a written agreement with BBH&Co., uninvested overnight cash balances are swept to offshore branches of U.S. regulated and domiciled banks located in Toronto, Canada; London, United Kingdom; Grand Cayman, Cayman Islands; and Nassau, Bahamas; which are subject to U.S. regulation and regulatory oversight. As of December 31, 2019 and December 31, 2018, USCI held cash deposits and investments in Treasuries in the amounts of $170,813,994 and $472,109,213, respectively, with the custodian and FCMs. As of December 31, 2019 and December 31, 2018, CPER held cash deposits and investments in Treasuries in the amounts of $6,478,904 and $11,556,460, respectively, with the custodian and FCMs. Some or all of these amounts may be subject to loss should the Trust Series' custodian and/or FCMs cease operations. For derivatives, risks arise from changes in the market value of the contracts. Theoretically, each Trust Series is exposed to market risk equal to the value of Futures Contracts purchased and unlimited liability on such contracts sold short. As both a buyer and a seller of options, each Trust Series pays or receives a premium at the outset and then bears the risk of unfavorable changes in the price of the contract underlying the option. The Trust Series’ policy is to continuously monitor its exposure to market and counterparty risk through the use of a variety of financial, position and credit exposure reporting controls and procedures. In addition, the Trust Series or USCF have a policy of requiring review of the credit standing of each broker or counterparty with which they conduct business. The financial instruments held by the applicable Trust Series are reported in its statements of financial condition at market or fair value, or at carrying amounts that approximate fair value, because of their highly liquid nature and short-term maturity.

FINANCIAL HIGHLIGHTS

FINANCIAL HIGHLIGHTS	12 Months Ended
	Dec. 31, 2019
FINANCIAL HIGHLIGHTS
FINANCIAL HIGHLIGHTS	NOTE 7 - FINANCIAL HIGHLIGHTS The following tables present per share performance data and other supplemental financial data for each Trust Series for the years ended December 31, 2019, 2018 and 2017 for the shareholders. This information has been derived from information presented in the financial statements. USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended Year ended Year ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Per Share Operating Performance: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net asset value, beginning of year $ 37.49 ​ $ 42.48 ​ $ 40.02 ​ Total income (loss) ​ ​ (0.21) ​ ​ (4.56) ​ ​ 2.87 ​ Total expenses ​ ​ (0.41) ​ ​ (0.43) ​ ​ (0.41) ​ Net increase (decrease) in net asset value ​ ​ (0.62) ​ ​ (4.99) ​ ​ 2.46 ​ Net asset value, end of year $ 36.87 ​ $ 37.49 ​ $ 42.48 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Return ​ ​ (1.65) % ​ (11.75) % ​ 6.15 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ratios to Average Net Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total income (loss) ​ ​ (1.32) % ​ (11.33) % ​ 6.17 % Management fees ​ ​ 0.80 %* ​ 0.80 %* ​ 0.80 %* Total expenses excluding management fees ​ ​ 0.30 % ​ 0.23 % ​ 0.24 % Expenses waived ​ ​ — %* ​ — %* ​ — %* Net expenses excluding management fees ​ ​ 0.30 % ​ 0.23 % ​ 0.24 % Net income (loss) ​ ​ (2.42) % ​ (12.36) % ​ 5.14 % ​ CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended Year ended Year ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Per Share Operating Performance: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net asset value, beginning of year $ 16.44 ​ $ 21.05 ​ $ 16.36 ​ Total income (loss) ​ ​ 1.24 ​ ​ (4.46) ​ ​ 4.83 ​ Net expenses ​ ​ (0.14) ​ ​ (0.15) ​ ​ (0.14) ​ Net increase (decrease) in net asset value ​ ​ 1.10 ​ ​ (4.61) ​ ​ 4.69 ​ Net asset value, end of year $ 17.54 ​ $ 16.44 ​ $ 21.05 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Return ​ ​ 6.69 % ​ (21.90) % ​ 28.67 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ratios to Average Net Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total income (loss) ​ ​ 3.36 % ​ (24.49) % ​ 22.70 % Management fees ​ ​ 0.65 %*† ​ 0.65 %*† ​ 0.65 %*† Total expenses excluding management fees ​ ​ 0.79 % ​ 0.58 % ​ 0.54 % Expenses waived ​ ​ (0.64) %*† ​ (0.43) %*† ​ (0.39) %*† Net expenses excluding management fees ​ ​ 0.15 % ​ 0.15 % ​ 0.15 % Net income (loss) ​ ​ 2.56 % ​ (25.29) % ​ 21.90 % ​ ​

QUARTERLY FINANCIAL DATA (Unaud

QUARTERLY FINANCIAL DATA (Unaudited)	12 Months Ended
	Dec. 31, 2019
QUARTERLY FINANCIAL DATA (Unaudited)
Quarterly financial data (Unaudited)	​ NOTE 8 – QUARTERLY FINANCIAL DATA (Unaudited) The following summarized (unaudited) quarterly financial information presents the results of operations and other data for the three-month periods ended March 31, June 30, September 30 and December 31, 2019 and 2018. USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2019 ​ 2019 ​ 2019 ​ 2019 Total Income (Loss) ​ $ 17,519,370 ​ $ (18,135,475) ​ $ (10,523,581) ​ $ 6,543,450 Total Expenses ​ 1,275,883 ​ 1,102,290 ​ 833,737 ​ 605,786 Net Income (Loss) ​ $ 16,243,487 ​ $ (19,237,765) ​ $ (11,357,318) ​ $ 5,937,664 Net Income (Loss) per Share ​ $ 1.32 ​ $ (1.83) ​ $ (1.14) ​ $ 1.03 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2018 ​ 2018 ​ 2018 ​ 2018 Total Income (Loss) ​ $ 4,264,134 ​ $ 14,855,407 ​ $ (19,156,279) ​ $ (65,771,228) Total Expenses ​ 1,391,035 ​ 1,536,430 ​ 1,639,497 ​ 1,396,043 Net Income (Loss) ​ $ 2,873,099 ​ $ 13,318,977 ​ $ (20,795,776) ​ $ (67,167,271) Net Income (Loss) per Share ​ $ 0.24 ​ $ 0.98 ​ $ (1.24) ​ $ (4.97) ​ CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2019 ​ 2019 ​ 2019 ​ 2019 Total Income (Loss) ​ $ 1,242,174 ​ $ (1,111,271) ​ $ (473,662) ​ $ 697,689 Total Expenses ​ 44,938 ​ 49,021 ​ 30,913 ​ 27,169 Expense Waivers ​ (21,918) ​ (22,353) ​ (12,147) ​ (11,210) Net Expenses ​ 23,020 ​ 26,668 ​ 18,766 ​ 15,959 Net Income (Loss) ​ $ 1,219,154 ​ $ (1,137,939) ​ $ (492,428) ​ $ 681,730 Net Income (Loss) per Share ​ $ 1.92 ​ $ (1.37) ​ $ (0.83) ​ $ 1.38 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2018 ​ 2018 ​ 2018 ​ 2018 Total Income (Loss) ​ $ (1,178,835) ​ $ (389,444) ​ $ (582,529) ​ $ (747,096) Total Expenses ​ 35,759 ​ 33,533 ​ 37,461 ​ 39,211 Expense Waivers ​ (8,269) ​ (10,931) ​ (15,472) ​ (16,628) Net Expenses ​ 27,490 ​ 22,602 ​ 21,989 ​ 22,583 Net Income (Loss) ​ $ (1,206,325) ​ $ (412,046) ​ $ (604,518) ​ $ (769,679) Net Income (Loss) per Share ​ $ (1.75) ​ $ (0.58) ​ $ (1.12) ​ $ (1.16) ​

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2019
FAIR VALUE OF FINANCIAL INSTRUMENTS
FAIR VALUE OF FINANCIAL INSTRUMENTS	NOTE 9 — FAIR VALUE OF FINANCIAL INSTRUMENTS The Trust and each Trust Series value their investments in accordance with Accounting Standards Codification 820 – Fair Value Measurements and Disclosures (“ASC 820”). ASC 820 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurement. The changes to past practice resulting from the application of ASC 820 relate to the definition of fair value, the methods used to measure fair value, and the expanded disclosures about fair value measurement. ASC 820 establishes a fair value hierarchy that distinguishes between: (1) market participant assumptions developed based on market data obtained from sources independent of the Trust and each Trust Series (observable inputs) and (2) the Trust’s and each Trust Series’ own assumptions about market participant assumptions developed based on the best information available under the circumstances (unobservable inputs). The three levels defined by the ASC 820 hierarchy are as follows: Level I – Quoted prices (unadjusted) in active markets for identical Level II – Inputs other than quoted prices included within Level I that are observable for the asset or liability, either directly or indirectly. Level II assets include the following: quoted prices for similar Level III – Unobservable pricing input at the measurement date for the asset or liability. Unobservable inputs shall be used to measure fair value to the extent that observable inputs are not available. In some instances, the inputs used to measure fair value might fall within different levels of the fair value hierarchy. The level in the fair value hierarchy within which the fair value measurement in its entirety falls shall be determined based on the lowest input level that is significant to the fair value measurement in its entirety. The following table summarizes the valuation of USCI’s securities at December 31, 2019 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2019 Total Level I Level II Level III Short-Term Investments ​ $ 188,989,355 ​ $ 188,989,355 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Contracts ​ (2,381,779) ​ ​ (2,381,779) ​ ​ — ​ ​ — United States Contracts ​ 4,520,647 ​ ​ 4,520,647 ​ ​ — ​ ​ — ​ During the year ended December 31, 2019, there were no transfers The following table summarizes the valuation of USCI’s securities at December 31, 2018 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2018 Total Level I Level II Level III Short-Term Investments ​ $ 436,426,995 ​ $ 436,426,995 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Contracts ​ (1,866,820) ​ (1,866,820) ​ — ​ — United States Contracts ​ (12,621,164) ​ (12,621,164) ​ — ​ — ​ During the year ended December 31, 2018, there were no transfers The following table summarizes the valuation of CPER's securities at December 31, 2019 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2019 Total Level I Level II Level III Short-Term Investments ​ $ 7,096,018 ​ $ 7,096,018 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States Contracts ​ 346,250 ​ 346,250 ​ — ​ — ​ During the year ended December 31, 2019, there were no transfers The following table summarizes the valuation of CPER's securities at December 31, 2018 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2018 Total Level I Level II Level III Short-Term Investments ​ $ 9,657,426 ​ $ 9,657,426 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States Contracts ​ (903,475) ​ (903,475) ​ — ​ — ​ During the year ended December 31, 2018, there were no transfers The Trust and each Trust Series have adopted the provisions of Accounting Standards Codification 815 — Derivatives and Hedging, which require presentation of qualitative disclosures about objectives and strategies for using derivatives, quantitative disclosures about fair value amounts and gains and losses on derivatives. Fair Value of Derivative Instruments Held by USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not ​ ​ ​ ​ ​ Accounted for ​ ​ ​ Fair Value ​ Fair Value as Hedging ​ Statements of Financial ​ At December 31, ​ At December 31, Instruments ​ Condition Location ​ 2019 ​ 2018 Futures - Commodity Contracts Assets ​ $ 2,138,868 ​ $ (14,487,984) ​ Fair Value of Derivative Instruments Held by CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not ​ ​ ​ ​ ​ Accounted for ​ ​ ​ Fair Value ​ Fair Value as Hedging ​ Statements of Financial ​ At December 31, ​ At December 31, Instruments ​ Condition Location ​ 2019 ​ 2018 Futures - Commodity Contracts Assets $ 346,250 ​ $ (903,475) ​ The Effect of Derivative Instruments on the Statements of Operations of USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended ​ For the year ended ​ For the year ended ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 ​ ​ ​ ​ Change in ​ ​ Change in ​ ​ ​ Change in Derivatives ​ Location of ​ Realized ​ Unrealized ​ Realized ​ Unrealized ​ Realized ​ ​ Unrealized not Accounted ​ Gain (Loss) ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ ​ Gain (Loss) on for as ​ on Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ ​ Derivatives Hedging ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ ​ Recognized in Instruments ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income ​ ​ Income Futures - Commodity Contracts Realized gain (loss) on closed positions ​ $ (29,144,478) ​ ​ ​ ​ $ (54,710,680) ​ $ 22,989,718 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in unrealized gain (loss) on open positions ​ ​ ​ ​ $ 16,626,852 ​ ​ ​ $ (21,360,954) ​ ​ ​ ​ $ 4,817,510 ​ The Effect of Derivative Instruments on the Statements of Operations of CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended ​ For the year ended ​ For the year ended ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 ​ ​ ​ ​ Change in ​ ​ Change in ​ ​ Change in Derivatives ​ Location of ​ Realized ​ Unrealized ​ Realized ​ Unrealized ​ Realized ​ Unrealized not Accounted ​ Gain (Loss) ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on for as ​ on Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives Hedging ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in Instruments ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income Futures - Commodity Contracts Realized gain (loss) on closed positions ​ $ (1,134,850) ​ ​ ​ ​ $ (1,318,188) ​ $ 1,468,825 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in unrealized gain (loss) on open positions ​ ​ ​ ​ $ 1,249,725 ​ ​ ​ ​ $ (1,785,413) ​ ​ ​ ​ $ 793,363 ​

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	12 Months Ended
	Dec. 31, 2019
RECENT ACCOUNTING PRONOUNCEMENTS
RECENT ACCOUNTING PRONOUNCEMENTS	NOTE 10 – RECENT ACCOUNTING PRONOUNCEMENTS In August 2018, the FASB issued Accounting Standards Update (“ASU”) No. 2018-13, which changes certain fair value measurement disclosure requirements. The new ASU, in addition to other modifications and additions, removes the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, and the Trust Series’ policy for the timing of transfers between levels. The amendments are effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. The Trust Series has evaluated the implications of certain provisions of the ASU and has determined that there will be no material impacts to the financial statements.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2019
SUBSEQUENT EVENTS
SUBSEQUENT EVENTS	NOTE 11 – SUBSEQUENT EVENTS The Trust and each Trust Series have performed an evaluation of subsequent events through the date the financial statements were issued. This evaluation did not result in any subsequent events that necessitated disclosures and/or adjustments.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2019
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Basis of Presentation	Basis of Presentation The financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") as detailed in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification. Each Trust Series is an investment company and follows the accounting and reporting guidance in FASB Topic 946. The Trust financial statements included its respective series of funds financial statements including USCI, CPER, USAG, UCCO and XBET through December 31, 2019. For reporting commencing with the December 31, 2019 reporting period, and in conjunction with the liquidation of USAG on September 12, 2018 and the withdrawal of UCCO’s registration on December 19, 2018, the USAG and UCCO financial statements have not been included, but are included in the overall Trust financial statements for the applicable reporting periods.
Revenue Recognition	Revenue Recognition Commodity futures contracts, forward contracts, physical commodities and related options are recorded on the trade date. All such transactions are recorded on the identified cost basis and marked to market daily. Unrealized gains or losses on open contracts are reflected in the statements of financial condition and represent the difference between the original contract amount and the market value (as determined by exchange settlement prices for futures contracts and related options and cash dealer prices at a predetermined time for forward contracts, physical commodities, and their related options) as of the last business day of the year or as of the last date of the financial statements. Changes in the unrealized gains or losses between periods are reflected in the statements of operations. Each Trust Series earns income on funds held at the custodian or a futures commission merchant (“FCM”) at prevailing market rates earned on such investments.
Brokerage Commissions	Brokerage Commissions Brokerage commissions on all open commodity futures contracts are accrued on a full-turn basis.
Income Taxes	Income Taxes The Trust Series are not subject to federal income taxes; each investor reports his/her allocable share of income, gain, loss deductions or credits on his/her own income tax return. In accordance with U.S. GAAP, each Trust Series is required to determine whether a tax position is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any tax related appeals or litigation processes, based on the technical merits of the position. Each Trust Series files an income tax return in the U.S. federal jurisdiction and may file income tax returns in various U.S. states. None of the Trust Series is subject to income tax return examinations by major taxing authorities for years before 2016. The tax benefit recognized is measured as the largest amount of benefit that has a greater than fifty percent likelihood of being realized upon ultimate settlement. De-recognition of a tax benefit previously recognized results in each Trust Series recording a tax liability that reduces net assets. However, each Trust Series' conclusions regarding this policy may be subject to review and adjustment at a later date based on factors including, but not limited to, on-going analysis of and changes to tax laws, regulations and interpretations thereof. Each Trust Series recognizes interest accrued related to unrecognized tax benefits and penalties related to unrecognized tax benefits in income tax fees payable, if assessed. No interest expense or penalties have been recognized as of and for the year ended December 31, 2019 for any Trust Series.
Creations and Redemptions	Creations and Redemptions Effective as of May 1, 2012, Authorized Participants may purchase Creation Baskets or redeem Redemption Baskets for USCI and CPER only in blocks of 50,000 shares at a price equal to the NAV of the shares calculated shortly after the close of the core trading session on the NYSE Arca on the day the order is placed. Each Trust Series receives or pays the proceeds from shares sold or redeemed within two business days after the trade date of the purchase or redemption. The amounts due from Authorized Participants are reflected in each Trust Series’ statements of financial condition as receivable for shares sold and amounts payable to Authorized Participants upon redemption are reflected as payable for shares redeemed.
Trust Capital and Allocation of Income and Losses	Trust Capital and Allocation of Income and Losses Profit or loss shall be allocated among the shareholders of each Trust Series in proportion to the number of shares each investor holds as of the close of each month. USCF may revise, alter or otherwise modify this method of allocation as described in the Trust Agreement .
Calculation of Per Share NAV	Calculation of Per Share NAV Each Trust Series’ per share NAV is calculated on each NYSE Arca trading day by taking the current market value of its total assets, subtracting any liabilities and dividing that amount by the total number of shares outstanding. Each Trust Series uses the closing prices on the relevant Futures Exchanges (as defined in Note 3 below) of the Applicable Benchmark Component Futures Contracts (as defined in Note 3 below) that at any given time make up the Applicable Index (as defined in Note 3 below) (determined at the earlier of the close of such exchange or 2:30 p.m. New York time) for the contracts traded on the Futures Exchanges, but calculates or determines the value of all other investments of each Trust Series using market quotations, if available, or other information customarily used to determine the fair value of such investments.
Net Income (Loss) Per Share	Net Income (Loss) Per Share Net income (loss) per share is the difference between the per share NAV at the beginning of each period and at the end of each period. The weighted average number of shares outstanding was computed for purposes of disclosing net income (loss) per weighted average share. The weighted average shares are equal to the number of shares outstanding at the end of the period, adjusted proportionately for shares added and redeemed based on the amount of time the shares were outstanding during such period. As of December 31, 2019, USCF held 5 shares of USCI and 40 shares of CPER.
Offering Costs	Offering Costs Offering costs incurred in connection with the registration of shares prior to the commencement of the offering are borne by USCF. Offering costs incurred in connection with the registration of additional shares after the commencement of the offering are borne by each Trust Series. These costs include registration fees paid to regulatory agencies and all legal, accounting, printing and other expenses associated with such offerings. Costs borne by the Trust Series after the commencement of an offering are accounted for as a deferred charge and thereafter amortized to expense over twelve months on a straight-line basis or a shorter period if warranted.
Cash Equivalents	Cash Equivalents Cash equivalents include money market funds and overnight deposits or time deposits with original maturity dates of six months or less.
Reclassification	Reclassification Certain amounts in the accompanying financial statements were reclassified to conform to the current presentation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires USCF to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of the revenue and expenses during the reporting period. Actual results may differ from those estimates and assumptions.

CONTRACTS AND AGREEMENTS (Table

CONTRACTS AND AGREEMENTS (Tables)	12 Months Ended
	Dec. 31, 2019
CONTRACTS AND AGREEMENTS
Schedule of brokerage and futures commission	USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Year Ended For the Year Ended For the Year Ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Total commissions accrued to brokers ​ $ 453,997 ​ $ 539,884 ​ $ 527,610 ​ Total commissions as annualized percentage of average total net assets ​ 0.13 % 0.09 % 0.10 % Commissions accrued as a result of rebalancing ​ $ 429,823 ​ $ 508,021 ​ $ 505,199 ​ Percentage of commissions accrued as a result of rebalancing ​ 94.68 % 94.10 % 95.75 % Commissions accrued as a result of creation and redemption activity ​ $ 24,174 ​ $ 31,863 ​ $ 22,411 ​ Percentage of commissions accrued as a result of creation and redemption activity ​ 5.32 % 5.90 % 4.25 % ​ The decrease in total commissions accrued to brokers for the year ended December 31, 2019, compared to the year ended December 31, 2018, was due primarily to a lower number of contracts held and traded. The increase in total commissions accrued to brokers for the year ended December 31, 2018, compared to the year ended December 31, 2017, was due primarily to higher number of futures contracts being held and traded. However, there can be no assurance that commission costs and portfolio turnover will not cause commission expenses to rise in future quarters. CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Year Ended For the Year Ended For the Year Ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Total commissions accrued to brokers ​ $ 6,082 ​ $ 5,181 ​ $ 5,461 ​ Total commissions as annualized percentage of average total net assets ​ 0.06 % 0.04 % 0.05 % Commissions accrued as a result of rebalancing ​ $ 5,353 ​ $ 4,205 ​ $ 4,390 ​ Percentage of commissions accrued as a result of rebalancing ​ 88.01 % 81.16 % 80.39 % Commissions accrued as a result of creation and redemption activity ​ $ 729 ​ $ 976 ​ $ 1,071 ​ Percentage of commissions accrued as a result of creation and redemption activity ​ 11.99 % 18.84 % 19.61 % ​ The increase in total commissions accrued to brokers for the year ended December 31, 2019, compared to the year ended December 31, 2018, was due primarily to a higher number of contracts held and traded. The decrease in total commissions accrued to brokers for the year ended December 31, 2018, compared to the year ended December 31, 2017, was due primarily to lower number of futures contracts being held and traded. However, there can be no assurance that commission costs and portfolio turnover will not cause commission expenses to rise in future quarters.

FINANCIAL HIGHLIGHTS (Tables)

FINANCIAL HIGHLIGHTS (Tables)	12 Months Ended
	Dec. 31, 2019
FINANCIAL HIGHLIGHTS
Schedule of per share performance data and other supplemental financial data for each Trust Series	The following tables present per share performance data and other supplemental financial data for each Trust Series for the years ended December 31, 2019, 2018 and 2017 for the shareholders. This information has been derived from information presented in the financial statements. USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended Year ended Year ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Per Share Operating Performance: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net asset value, beginning of year $ 37.49 ​ $ 42.48 ​ $ 40.02 ​ Total income (loss) ​ ​ (0.21) ​ ​ (4.56) ​ ​ 2.87 ​ Total expenses ​ ​ (0.41) ​ ​ (0.43) ​ ​ (0.41) ​ Net increase (decrease) in net asset value ​ ​ (0.62) ​ ​ (4.99) ​ ​ 2.46 ​ Net asset value, end of year $ 36.87 ​ $ 37.49 ​ $ 42.48 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Return ​ ​ (1.65) % ​ (11.75) % ​ 6.15 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ratios to Average Net Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total income (loss) ​ ​ (1.32) % ​ (11.33) % ​ 6.17 % Management fees ​ ​ 0.80 %* ​ 0.80 %* ​ 0.80 %* Total expenses excluding management fees ​ ​ 0.30 % ​ 0.23 % ​ 0.24 % Expenses waived ​ ​ — %* ​ — %* ​ — %* Net expenses excluding management fees ​ ​ 0.30 % ​ 0.23 % ​ 0.24 % Net income (loss) ​ ​ (2.42) % ​ (12.36) % ​ 5.14 % ​ CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year ended Year ended Year ended ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 Per Share Operating Performance: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net asset value, beginning of year $ 16.44 ​ $ 21.05 ​ $ 16.36 ​ Total income (loss) ​ ​ 1.24 ​ ​ (4.46) ​ ​ 4.83 ​ Net expenses ​ ​ (0.14) ​ ​ (0.15) ​ ​ (0.14) ​ Net increase (decrease) in net asset value ​ ​ 1.10 ​ ​ (4.61) ​ ​ 4.69 ​ Net asset value, end of year $ 17.54 ​ $ 16.44 ​ $ 21.05 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Return ​ ​ 6.69 % ​ (21.90) % ​ 28.67 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ratios to Average Net Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total income (loss) ​ ​ 3.36 % ​ (24.49) % ​ 22.70 % Management fees ​ ​ 0.65 %*† ​ 0.65 %*† ​ 0.65 %*† Total expenses excluding management fees ​ ​ 0.79 % ​ 0.58 % ​ 0.54 % Expenses waived ​ ​ (0.64) %*† ​ (0.43) %*† ​ (0.39) %*† Net expenses excluding management fees ​ ​ 0.15 % ​ 0.15 % ​ 0.15 % Net income (loss) ​ ​ 2.56 % ​ (25.29) % ​ 21.90 % ​

QUARTERLY FINANCIAL DATA (Una_2

QUARTERLY FINANCIAL DATA (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
QUARTERLY FINANCIAL DATA (Unaudited)
Summary of Quarterly Financial Information	The following summarized (unaudited) quarterly financial information presents the results of operations and other data for the three-month periods ended March 31, June 30, September 30 and December 31, 2019 and 2018. USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2019 ​ 2019 ​ 2019 ​ 2019 Total Income (Loss) ​ $ 17,519,370 ​ $ (18,135,475) ​ $ (10,523,581) ​ $ 6,543,450 Total Expenses ​ 1,275,883 ​ 1,102,290 ​ 833,737 ​ 605,786 Net Income (Loss) ​ $ 16,243,487 ​ $ (19,237,765) ​ $ (11,357,318) ​ $ 5,937,664 Net Income (Loss) per Share ​ $ 1.32 ​ $ (1.83) ​ $ (1.14) ​ $ 1.03 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2018 ​ 2018 ​ 2018 ​ 2018 Total Income (Loss) ​ $ 4,264,134 ​ $ 14,855,407 ​ $ (19,156,279) ​ $ (65,771,228) Total Expenses ​ 1,391,035 ​ 1,536,430 ​ 1,639,497 ​ 1,396,043 Net Income (Loss) ​ $ 2,873,099 ​ $ 13,318,977 ​ $ (20,795,776) ​ $ (67,167,271) Net Income (Loss) per Share ​ $ 0.24 ​ $ 0.98 ​ $ (1.24) ​ $ (4.97) ​ CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2019 ​ 2019 ​ 2019 ​ 2019 Total Income (Loss) ​ $ 1,242,174 ​ $ (1,111,271) ​ $ (473,662) ​ $ 697,689 Total Expenses ​ 44,938 ​ 49,021 ​ 30,913 ​ 27,169 Expense Waivers ​ (21,918) ​ (22,353) ​ (12,147) ​ (11,210) Net Expenses ​ 23,020 ​ 26,668 ​ 18,766 ​ 15,959 Net Income (Loss) ​ $ 1,219,154 ​ $ (1,137,939) ​ $ (492,428) ​ $ 681,730 Net Income (Loss) per Share ​ $ 1.92 ​ $ (1.37) ​ $ (0.83) ​ $ 1.38 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ First Second Third Fourth ​ ​ Quarter ​ Quarter ​ Quarter ​ Quarter ​ ​ 2018 ​ 2018 ​ 2018 ​ 2018 Total Income (Loss) ​ $ (1,178,835) ​ $ (389,444) ​ $ (582,529) ​ $ (747,096) Total Expenses ​ 35,759 ​ 33,533 ​ 37,461 ​ 39,211 Expense Waivers ​ (8,269) ​ (10,931) ​ (15,472) ​ (16,628) Net Expenses ​ 27,490 ​ 22,602 ​ 21,989 ​ 22,583 Net Income (Loss) ​ $ (1,206,325) ​ $ (412,046) ​ $ (604,518) ​ $ (769,679) Net Income (Loss) per Share ​ $ (1.75) ​ $ (0.58) ​ $ (1.12) ​ $ (1.16)

FAIR VALUE OF FINANCIAL INSTR_2

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2019
FAIR VALUE OF FINANCIAL INSTRUMENTS
Schedule of summary of valuation of Usci's, Cper's, Usag's and Usmi's securities using fair value hierarchy	The following table summarizes the valuation of USCI’s securities at December 31, 2019 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2019 Total Level I Level II Level III Short-Term Investments ​ $ 188,989,355 ​ $ 188,989,355 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Contracts ​ (2,381,779) ​ ​ (2,381,779) ​ ​ — ​ ​ — United States Contracts ​ 4,520,647 ​ ​ 4,520,647 ​ ​ — ​ ​ — ​ During the year ended December 31, 2019, there were no transfers The following table summarizes the valuation of USCI’s securities at December 31, 2018 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2018 Total Level I Level II Level III Short-Term Investments ​ $ 436,426,995 ​ $ 436,426,995 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Foreign Contracts ​ (1,866,820) ​ (1,866,820) ​ — ​ — United States Contracts ​ (12,621,164) ​ (12,621,164) ​ — ​ — ​ During the year ended December 31, 2018, there were no transfers The following table summarizes the valuation of CPER's securities at December 31, 2019 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2019 Total Level I Level II Level III Short-Term Investments ​ $ 7,096,018 ​ $ 7,096,018 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States Contracts ​ 346,250 ​ 346,250 ​ — ​ — ​ During the year ended December 31, 2019, there were no transfers The following table summarizes the valuation of CPER's securities at December 31, 2018 using the fair value hierarchy: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2018 Total Level I Level II Level III Short-Term Investments ​ $ 9,657,426 ​ $ 9,657,426 ​ $ — ​ $ — Exchange-Traded Futures Contracts ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ United States Contracts ​ (903,475) ​ (903,475) ​ — ​ —
Schedule of fair value of derivative instruments held by Usci, Cper, Usag and Usmi	Fair Value of Derivative Instruments Held by USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not ​ ​ ​ ​ ​ Accounted for ​ ​ ​ Fair Value ​ Fair Value as Hedging ​ Statements of Financial ​ At December 31, ​ At December 31, Instruments ​ Condition Location ​ 2019 ​ 2018 Futures - Commodity Contracts Assets ​ $ 2,138,868 ​ $ (14,487,984) ​ Fair Value of Derivative Instruments Held by CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not ​ ​ ​ ​ ​ Accounted for ​ ​ ​ Fair Value ​ Fair Value as Hedging ​ Statements of Financial ​ At December 31, ​ At December 31, Instruments ​ Condition Location ​ 2019 ​ 2018 Futures - Commodity Contracts Assets $ 346,250 ​ $ (903,475) ​
Schedule of effect of derivative instruments on condensed statements of operations of Usci, Cper, Usag and Usmi	The Effect of Derivative Instruments on the Statements of Operations of USCI ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended ​ For the year ended ​ For the year ended ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 ​ ​ ​ ​ Change in ​ ​ Change in ​ ​ ​ Change in Derivatives ​ Location of ​ Realized ​ Unrealized ​ Realized ​ Unrealized ​ Realized ​ ​ Unrealized not Accounted ​ Gain (Loss) ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ ​ Gain (Loss) on for as ​ on Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ ​ Derivatives Hedging ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ ​ Recognized in Instruments ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income ​ ​ Income Futures - Commodity Contracts Realized gain (loss) on closed positions ​ $ (29,144,478) ​ ​ ​ ​ $ (54,710,680) ​ $ 22,989,718 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in unrealized gain (loss) on open positions ​ ​ ​ ​ $ 16,626,852 ​ ​ ​ $ (21,360,954) ​ ​ ​ ​ $ 4,817,510 ​ The Effect of Derivative Instruments on the Statements of Operations of CPER ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended ​ For the year ended ​ For the year ended ​ ​ ​ ​ December 31, 2019 ​ December 31, 2018 ​ December 31, 2017 ​ ​ ​ ​ Change in ​ ​ Change in ​ ​ Change in Derivatives ​ Location of ​ Realized ​ Unrealized ​ Realized ​ Unrealized ​ Realized ​ Unrealized not Accounted ​ Gain (Loss) ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on ​ Gain (Loss) ​ Gain (Loss) on for as ​ on Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives ​ on Derivatives ​ Derivatives Hedging ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in ​ Recognized in Instruments ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income ​ Income Futures - Commodity Contracts Realized gain (loss) on closed positions ​ $ (1,134,850) ​ ​ ​ ​ $ (1,318,188) ​ $ 1,468,825 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Change in unrealized gain (loss) on open positions ​ ​ ​ ​ $ 1,249,725 ​ ​ ​ ​ $ (1,785,413) ​ ​ ​ ​ $ 793,363

ORGANIZATION AND BUSINESS (Addi

ORGANIZATION AND BUSINESS (Additional Information) (Details) - USD ($)	Dec. 31, 2019	May 08, 2019	Nov. 15, 2011	Nov. 10, 2010	Aug. 10, 2010
ORGANIZATION AND BUSINESS
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets					$ 1,000
United States Commodity Index Fund
ORGANIZATION AND BUSINESS
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets		$ 1,000
United States Commodity Index Fund | Creation Baskets | Effective as of May 1, 2012
ORGANIZATION AND BUSINESS
Number of Units per basket	50,000
United States Commodity Index Fund | Marketing Agent | Prior to May 1, 2012
ORGANIZATION AND BUSINESS
Number of Units per basket	100,000
United States Commodity Index Fund | Creation Basket
ORGANIZATION AND BUSINESS
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets	$ 350
United States Copper Index Fund
ORGANIZATION AND BUSINESS
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets			$ 1,000	$ 1,000
United States Copper Index Fund | Creation Baskets | Effective as of May 1, 2012
ORGANIZATION AND BUSINESS
Number of Units per basket	50,000

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Additional Information) (Details)	12 Months Ended
	Dec. 31, 2019USD ($)shares
Significant Accounting Policies
Income tax interest expense or penalties | $	$ 0
Cash equivalents maturity period	6 months
United States Commodity Index Fund
Significant Accounting Policies
Weighted Average Number of Shares Outstanding, Basic	5
United States Commodity Index Fund | Creation Baskets | Effective as of May 1, 2012
Significant Accounting Policies
Weighted Average Number of Shares Outstanding, Basic	50,000
United States Copper Index Fund
Significant Accounting Policies
Weighted Average Number of Shares Outstanding, Basic	40

TRUST SERIES (Additional Inform

TRUST SERIES (Additional Information) (Details)	May 08, 2019USD ($)shares	Jun. 28, 2012shares	Apr. 13, 2012shares	Dec. 07, 2011shares	Nov. 14, 2011shares	Sep. 06, 2011	Aug. 10, 2010USD ($)$ / sharesshares	Nov. 15, 2011USD ($)$ / sharesshares	Sep. 19, 2011shares	Jul. 30, 2010	Dec. 21, 2009USD ($)shares	Dec. 31, 2019USD ($)$ / shares	Dec. 31, 2018USD ($)$ / shares	Dec. 31, 2017$ / shares	Dec. 31, 2016$ / shares	Nov. 10, 2010USD ($)
Capital Unit
Sponsor capital contribution												$ 1,000	$ 0
Capital contribution to trust series											$ 1,000
Units acquisition | shares											20
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets							$ 1,000
Future Contract Rebalance Target Weightage												7.14%
United States Commodity Index Fund
Capital Unit
Sponsor capital contribution											$ 1,000	$ 0	$ 0
Units acquisition | shares				40					20
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission										50,000,000
Initial offering price per unit NAV | $ / shares							$ 50					$ 36.87	$ 37.49	$ 42.48	$ 40.02
Number of units issued | shares	20						100,000
Value of unit issued							$ 5,000,000
Number of registered units							100,000
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets	$ 1,000
United States Commodity Index Fund | Futures Contracts
Capital Unit
Future contract held												4,965
United States Commodity Index Fund | Futures Contracts | NYMEX
Capital Unit
Future contract held												880
United States Commodity Index Fund | Futures Contracts | Ice Futures
Capital Unit
Future contract held												716
United States Commodity Index Fund | Futures Contracts | Chicago Board of Trade
Capital Unit
Future contract held												644
United States Commodity Index Fund | Futures Contracts | Chicago Mercantile Exchange
Capital Unit
Future contract held												480
United States Commodity Index Fund | Futures Contracts | London Metal Exchange
Capital Unit
Future contract held												1,903
United States Commodity Index Fund | Futures Contracts | Commodity Exchange Inc
Capital Unit
Future contract held												342
United States Agriculture Index Fund
Capital Unit
Units acquisition | shares		40	40
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission						20,000,000
United States Copper Index Fund
Capital Unit
Sponsor capital contribution												$ 0	$ 0
Number of initially registered units on Form S-1 with the U.S. Securities and Exchange Commission						30,000,000
Initial offering price per unit NAV | $ / shares								$ 25				$ 17.54	$ 16.44	$ 21.05	$ 16.36
Number of units issued | shares					40			100,000
Value of unit issued								$ 2,500,000
Fee paid by Authorized Purchasers for each order placed to create one or more Creation Baskets or to redeem one or more baskets								$ 1,000								$ 1,000
Number of shares purchased | shares				40
United States Copper Index Fund | Futures Contracts | Commodity Exchange Inc
Capital Unit
Future contract held												100

FEES PAID BY EACH TRUST SERIE_2

FEES PAID BY EACH TRUST SERIES AND RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fees Paid and Related Party Transactions
Trustee annual fee	$ 3,000
Noninterest Expense Directors Fees	110,755	$ 94,778	$ 72,525
Expense waiver	67,628	77,884	$ 85,686
Directors and Officers Liability Insurance
Fees Paid and Related Party Transactions
Noninterest Expense Directors Fees	$ 556,951	521,689
United States Commodity Index Fund
Fees Paid and Related Party Transactions
Percentage of average daily net assets paid	0.95%
Noninterest Expense Directors Fees	$ 108,435	91,761
Estimated investor tax reporting cost	$ 476,864
United States Commodity Index Fund | Effective January 1, 2016
Fees Paid and Related Party Transactions
Percentage of average daily net assets paid	0.80%
United States Copper Index Fund
Fees Paid and Related Party Transactions
Noninterest Expense Directors Fees	$ 2,320	2,100
Estimated investor tax reporting cost	$ 75,053
Costs and expenses annual limit for reimbursement	0.15%
Expense waiver	$ 67,628
United States Agriculture Index Fund
Fees Paid and Related Party Transactions
Noninterest Expense Directors Fees		$ 917
United States Agriculture Index Fund | Effective January 1, 2016
Fees Paid and Related Party Transactions
Percentage of average daily net assets paid	0.65%

CONTRACTS AND AGREEMENTS - Brok

CONTRACTS AND AGREEMENTS - Brokerage Commission (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Contracts and Agreements
Brokerage commissions	$ 460,079	$ 546,563	$ 534,994
United States Commodity Index Fund
Contracts and Agreements
Brokerage commissions	$ 453,997	$ 539,884	$ 527,610
Brokerage commissions as a percentage of average daily net assets	0.13%	0.09%	0.10%
United States Commodity Index Fund | Rebalancing Investments Transaction
Contracts and Agreements
Brokerage commissions	$ 429,823	$ 508,021	$ 505,199
Brokerage commissions as a percentage of average daily net assets	94.68%	94.10%	95.75%
United States Commodity Index Fund | Creation and Redemption Activity
Contracts and Agreements
Brokerage commissions	$ 24,174	$ 31,863	$ 22,411
Brokerage commissions as a percentage of average daily net assets	5.32%	5.90%	4.25%
United States Copper Index Fund
Contracts and Agreements
Brokerage commissions	$ 6,082	$ 5,181	$ 5,461
Brokerage commissions as a percentage of average daily net assets	0.06%	0.04%	0.05%
United States Copper Index Fund | Rebalancing Investments Transaction
Contracts and Agreements
Brokerage commissions	$ 5,353	$ 4,205	$ 4,390
Brokerage commissions as a percentage of average daily net assets	88.01%	81.16%	80.39%
United States Copper Index Fund | Creation and Redemption Activity
Contracts and Agreements
Brokerage commissions	$ 729	$ 976	$ 1,071
Brokerage commissions as a percentage of average daily net assets	11.99%	18.84%	19.61%

CONTRACTS AND AGREEMENTS - Addi

CONTRACTS AND AGREEMENTS - Additional Information (Details) - USD ($)	May 01, 2018	Apr. 30, 2018	Dec. 31, 2019
Contracts and Agreements
Annual transfer agency services fee			$ 20,000
SummerHaven Agreements | United States Commodity Index Fund
Contracts and Agreements
Fee percentage	0.06%
Percentage of fee paid less than base fee		0.14%
Multiplier to calculate base fee		0.5
Percentage multiplied to get the calculate fee to be paid		0.06%
Annual licensing fee	$ 15,000
SummerHaven Agreements | United States Commodity Index Fund | Licensing Agreements
Contracts and Agreements
Annual licensing fee			15,000
SummerHaven Agreements | United States Copper Index Fund
Contracts and Agreements
Percentage of fee paid less than base fee		0.18%
Multiplier to calculate base fee		0.5
Percentage multiplied to get the calculate fee to be paid		0.60%
Maximum
Contracts and Agreements
Transaction fees per transaction			15
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts			$ 8
Maximum | Marketing Agreement
Contracts and Agreements
Fee percentage			10.00%
Minimum
Contracts and Agreements
Base amount for determining fee percentage			$ 75,000
Transaction fees per transaction			7
Commissions per round-turn trade, including applicable exchange and NFA fees for Futures Contracts and options on Futures Contracts			$ 7
Minimum | Marketing Agreement
Contracts and Agreements
Fee percentage			0.04%
For the first $500 million
Contracts and Agreements
Fee percentage			0.06%
For the first $500 million | SummerHaven Agreements | United States Commodity Index Fund
Contracts and Agreements
Fee percentage			0.06%
For the first $500 million | Maximum
Contracts and Agreements
Base amount for determining fee percentage			$ 500,000,000
Combined net assets greater than $500 million but less than $1 billion
Contracts and Agreements
Fee percentage			0.0465%
Combined net assets greater than $500 million but less than $1 billion | Maximum
Contracts and Agreements
Base amount for determining fee percentage			$ 1,000,000,000
Combined net assets greater than $500 million but less than $1 billion | Minimum
Contracts and Agreements
Base amount for determining fee percentage			$ 500,000,000
Combined net assets exceed $1 billion
Contracts and Agreements
Fee percentage			0.035%
Combined net assets exceed $1 billion | Minimum
Contracts and Agreements
Base amount for determining fee percentage			$ 1,000,000,000
On each Trust Series' assets up to 3 billion | Marketing Agreement
Contracts and Agreements
Fee percentage			0.06%
On each Trust Series' assets up to 3 billion | Maximum | Marketing Agreement
Contracts and Agreements
Base amount for determining fee percentage			$ 3,000,000,000
On each Trust Series' assets in excess of $3 billion | Maximum | Marketing Agreement
Contracts and Agreements
Base amount for determining fee percentage			$ 3,000,000,000

FINANCIAL INSTRUMENTS, OFF-BA_2

FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES - Additional Information (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
United States Commodity Index Fund
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES
Cash deposits and investments in Treasuries	$ 170,813,994	$ 472,109,213
Deposits, Money Market Deposits	19,500,000	6,400,000
United States Copper Index Fund
FINANCIAL INSTRUMENTS, OFF-BALANCE SHEET RISKS AND CONTINGENCIES
Cash deposits and investments in Treasuries	6,478,904	11,556,460
Deposits, Money Market Deposits	$ 620,000	$ 855,000

FINANCIAL HIGHLIGHTS - Per Unit

FINANCIAL HIGHLIGHTS - Per Unit Performance Data and Other Supplemental Financial Data (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States Commodity Index Fund
Per Share Operating Performance:
Net asset value, beginning of period (in dollars per share)	$ 37.49	$ 42.48	$ 40.02
Total income (loss)	(0.21)	(4.56)	2.87
Total expenses	(0.41)	(0.43)	(0.41)
Net increase (decrease) in net asset value	(0.62)	(4.99)	2.46
Net asset value, end of period (in dollars per share)	$ 36.87	$ 37.49	$ 42.48
Total Return	(1.65%)	(11.75%)	6.15%
Ratios to Average Net Assets
Total income (loss)	(1.32%)	(11.33%)	6.17%
Management fees	0.80%	0.80%	0.80%
Total expenses excluding management fees	0.30%	0.23%	0.24%
Net expenses excluding management fees	0.30%	0.23%	0.24%
Net income (loss)	(2.42%)	(12.36%)	5.14%
United States Copper Index Fund
Per Share Operating Performance:
Net asset value, beginning of period (in dollars per share)	$ 16.44	$ 21.05	$ 16.36
Total income (loss)	1.24	(4.46)	4.83
Total expenses	(0.14)	(0.15)	(0.14)
Net increase (decrease) in net asset value	1.10	(4.61)	4.69
Net asset value, end of period (in dollars per share)	$ 17.54	$ 16.44	$ 21.05
Total Return	6.69%	(21.90%)	28.67%
Ratios to Average Net Assets
Total income (loss)	3.36%	(24.49%)	22.70%
Management fees	0.65%	0.65%	0.65%
Total expenses excluding management fees	0.79%	0.58%	0.54%
Expenses waived	(0.64%)	(0.43%)	(0.39%)
Net expenses excluding management fees	0.15%	0.15%	0.15%
Net income (loss)	2.56%	(25.29%)	21.90%

FINANCIAL HIGHLIGHTS - Per Un_2

FINANCIAL HIGHLIGHTS - Per Unit Performance Data and Other Supplemental Financial Data (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States Copper Index Fund
Percentage of average daily net assets paid monthly, waiver expense	0.64%	0.43%	0.39%
Percentage of expenses exceeded	0.15%
Effective January 1, 2016 | United States Copper Index Fund
Percentage of average daily net assets paid monthly, waiver expense	0.65%
Effective January 1, 2016 | United States Commodity Index Fund
Percentage of average daily net assets paid monthly, waiver expense	0.80%

QUARTERLY FINANCIAL DATA (Una_3

QUARTERLY FINANCIAL DATA (Unaudited) (Summary of Quarterly Financial Information) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Data [Line Items]
Total Income (Loss)									$ (4,241,306)	$ (68,867,799)	$ 34,053,171
Total Expenses									3,969,737	6,145,146	5,533,116
Expense waivers									(67,628)	(77,884)	(85,686)
Net expenses									3,902,109	6,067,262	5,447,430
Net income (loss)									(8,143,415)	(74,935,061)	28,605,741
United States Commodity Index Fund
Quarterly Financial Data [Line Items]
Total Income (Loss)	$ 6,543,450	$ (10,523,581)	$ (18,135,475)	$ 17,519,370	$ (65,771,228)	$ (19,156,279)	$ 14,855,407	$ 4,264,134	(4,596,236)	(65,807,966)	31,840,731
Total Expenses	605,786	833,737	1,102,290	1,275,883	1,396,043	1,639,497	1,536,430	1,391,035	3,817,696	5,963,005	5,349,811
Net income (loss)	$ 5,937,664	$ (11,357,318)	$ (19,237,765)	$ 16,243,487	$ (67,167,271)	$ (20,795,776)	$ 13,318,977	$ 2,873,099	$ (8,413,932)	$ (71,770,971)	$ 26,490,920
Net Income (Loss) per Share	$ 1.03	$ (1.14)	$ (1.83)	$ 1.32	$ (4.97)	$ (1.24)	$ 0.98	$ 0.24	$ (0.62)	$ (4.99)	$ 2.46
United States Copper Index Fund
Quarterly Financial Data [Line Items]
Total Income (Loss)	$ 697,689	$ (473,662)	$ (1,111,271)	$ 1,242,174	$ (747,096)	$ (582,529)	$ (389,444)	$ (1,178,835)	$ 354,930	$ (2,897,904)	$ 2,347,392
Total Expenses	27,169	30,913	49,021	44,938	39,211	37,461	33,533	35,759	152,041	145,964	122,952
Expense waivers	(11,210)	(12,147)	(22,353)	(21,918)	(16,628)	(15,472)	(10,931)	(8,269)	(67,628)	(51,300)	(40,153)
Net expenses	15,959	18,766	26,668	23,020	22,583	21,989	22,602	27,490	84,413	94,664	82,799
Net income (loss)	$ 681,730	$ (492,428)	$ (1,137,939)	$ 1,219,154	$ (769,679)	$ (604,518)	$ (412,046)	$ (1,206,325)	$ 270,517	$ (2,992,568)	$ 2,264,593
Net Income (Loss) per Share	$ 1.38	$ (0.83)	$ (1.37)	$ 1.92	$ (1.16)	$ (1.12)	$ (0.58)	$ (1.75)	$ 1.10	$ (4.61)	$ 4.69

FAIR VALUE OF FINANCIAL INSTR_3

FAIR VALUE OF FINANCIAL INSTRUMENTS - Valuation of Securities Using Fair Value Hierarchy (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
United States Commodity Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Transfers between Level I to Level II	$ 0	$ 0
Transfers between Level II to Level I	0	0
United States Commodity Index Fund | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	188,989,355	436,426,995
United States Commodity Index Fund | Exchange-Traded Futures Contracts | Foreign Contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	(2,381,779)	(1,866,820)
United States Commodity Index Fund | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	4,520,647	(12,621,164)
United States Commodity Index Fund | Level I | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	188,989,355	436,426,995
United States Commodity Index Fund | Level I | Exchange-Traded Futures Contracts | Foreign Contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	(2,381,779)	(1,866,820)
United States Commodity Index Fund | Level I | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	4,520,647	(12,621,164)
United States Commodity Index Fund | Level II | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Commodity Index Fund | Level II | Exchange-Traded Futures Contracts | Foreign Contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Commodity Index Fund | Level II | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Commodity Index Fund | Level III | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Commodity Index Fund | Level III | Exchange-Traded Futures Contracts | Foreign Contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Commodity Index Fund | Level III | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Copper Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Transfers between Level I to Level II	0	0
Transfers between Level II to Level I	0	0
United States Copper Index Fund | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	7,096,018	9,657,426
United States Copper Index Fund | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	346,250	(903,475)
United States Copper Index Fund | Level I | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	7,096,018	9,657,426
United States Copper Index Fund | Level I | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	346,250	(903,475)
United States Copper Index Fund | Level II | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Copper Index Fund | Level II | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Copper Index Fund | Level III | Short-Term Investments
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	0	0
United States Copper Index Fund | Level III | Exchange-Traded Futures Contracts | United States
FAIR VALUE OF FINANCIAL INSTRUMENTS
Securities, fair value	$ 0	$ 0

FAIR VALUE OF FINANCIAL INSTR_4

FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value of Derivative Instrument held by Usci, Cper, Usag and Usmi (Details) - Not designated as Hedging Instrument - Commodity Contracts - Futures - Assets - USD ($)	Dec. 31, 2019	Dec. 31, 2018
United States Commodity Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Derivatives not Accounted for as Hedging Instruments	$ 2,138,868	$ (14,487,984)
United States Copper Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Derivatives not Accounted for as Hedging Instruments	$ 346,250	$ (903,475)

FAIR VALUE OF FINANCIAL INSTR_5

FAIR VALUE OF FINANCIAL INSTRUMENTS - Effect of Derivative Instruments on Condensed Statements of Operations of Usci, Cper, Usag and Usmi (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) on Derivatives Recognized in Income	$ (30,279,328)	$ (56,209,907)	$ 24,220,537
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	17,876,577	(23,145,242)	5,699,448
United States Commodity Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) on Derivatives Recognized in Income	(29,144,478)	(54,710,680)	22,989,718
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	16,626,852	(21,360,954)	4,817,510
United States Commodity Index Fund | Commodity Contracts | Futures | Realized gain (loss) on closed positions
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) on Derivatives Recognized in Income	(29,144,478)	(54,710,680)	22,989,718
United States Commodity Index Fund | Commodity Contracts | Futures | Change in unrealized gain (loss) on open positions
FAIR VALUE OF FINANCIAL INSTRUMENTS
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	16,626,852	(21,360,954)	4,817,510
United States Copper Index Fund
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) on Derivatives Recognized in Income	(1,134,850)	(1,318,188)	1,468,825
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	1,249,725	(1,785,413)	793,363
United States Copper Index Fund | Commodity Contracts | Futures | Realized gain (loss) on closed positions
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) on Derivatives Recognized in Income	(1,134,850)	(1,318,188)	1,468,825
United States Copper Index Fund | Commodity Contracts | Futures | Change in unrealized gain (loss) on open positions
FAIR VALUE OF FINANCIAL INSTRUMENTS
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ 1,249,725	$ (1,785,413)	$ 793,363