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Condensed Schedule of Investments | 6 Months Ended
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Jun. 30, 2011
Condensed Schedule of Investments | United States 12 Month Natural Gas Fund, LP Condensed Schedule of Investments (Unaudited) At June 30, 2011
|  |  | $(1,458,490) |  |  |  | $(1,458,490) |  |  |  | $(1,458,490) |
|  | Number of Contracts |  |  | Loss on Open Commodity Contracts |  |  | % of Partners’ Capital |
Open Futures Contracts - Long |  |  |  |  |  |  |  |  |  |  |  |
United States Contracts |  |  |  |  |  |  |  |  |  |  |  |
NYMEX Natural Gas Futures NG August 2011 contracts, expiring July 2011 |  |  | 64 |  |  | $ | (200,740 | ) |  |  | (0.56 | )
NYMEX Natural Gas Futures NG September 2011 contracts, expiring August 2011 |  |  | 64 |  |  |  | (182,240 | ) |  |  | (0.51 | )
NYMEX Natural Gas Futures NG October 2011 contracts, expiring September 2011 |  |  | 64 |  |  |  | (181,520 | ) |  |  | (0.51 | )
NYMEX Natural Gas Futures NG November 2011 contracts, expiring October 2011 |  |  | 64 |  |  |  | (144,970 | ) |  |  | (0.40 | )
NYMEX Natural Gas Futures NG December 2011 contracts, expiring November 2011 |  |  | 64 |  |  |  | (149,900 | ) |  |  | (0.42 | )
NYMEX Natural Gas Futures NG January 2012 contracts, expiring December 2011 |  |  | 65 |  |  |  | (178,550 | ) |  |  | (0.50 | )
NYMEX Natural Gas Futures NG February 2012 contracts, expiring January 2012 |  |  | 64 |  |  |  | (190,310 | ) |  |  | (0.53 | )
NYMEX Natural Gas Futures NG March 2012 contracts, expiring February 2012 |  |  | 64 |  |  |  | (34,150 | ) |  |  | (0.10 | )
NYMEX Natural Gas Futures NG April 2012 contracts, expiring March 2012 |  |  | 64 |  |  |  | (43,400 | ) |  |  | (0.12 | )
NYMEX Natural Gas Futures NG May 2012 contracts, expiring April 2012 |  |  | 64 |  |  |  | (41,620 | ) |  |  | (0.12 | )
NYMEX Natural Gas Futures NG June 2012 contracts, expiring May 2012 |  |  | 64 |  |  |  | (16,230 | ) |  |  | (0.04 | )
NYMEX Natural Gas Futures NG July 2012 contracts, expiring June 2012 |  |  | 65 |  |  |  | (94,860 | ) |  |  | (0.26 | )
Total Open Futures Contracts |  |  | 770 |  |  | $ | (1,458,490 | ) |  |  | (4.07 | )
|  | Principal Amount |  |  | Market Value |  |  |  |
Cash Equivalents |  |  |  |  |  |  |  |  |  |  |  |
United States - Money Market Funds |  |  |  |  |  |  |  |  |  |  |  |
Fidelity Institutional Government Portfolio - Class I |  | $ | 7,508,599 |  |  | $ | 7,508,599 |  |  |  | 20.95 |
Goldman Sachs Financial Square Funds - Government Fund - Class SL |  |  | 2,501,931 |  |  |  | 2,501,931 |  |  |  | 6.98 |
Morgan Stanley Institutional Liquidity Fund - Government Portfolio |  |  | 22,007,007 |  |  |  | 22,007,007 |  |  |  | 61.42 |
Total Cash Equivalents |  |  |  |  |  | $ | 32,017,537 |  |  |  | 89.35 |

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- Definition The entire disclosure for the information required in the supplementary schedule applicable to management investment companies summarizing the listing of holdings of unaffiliated investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C) -URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Article 12 + Details
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