United States Diesel-Heating Oil Fund, LP (UHN) is a commodity exchange-traded fund that seeks to track the daily percentage changes in the spot price of New York Harbor Ultra-Low Sulfur Diesel, also known as heating oil, delivered to the New York Harbor. Launched on April 13, 2007, and managed by United States Commodity Funds LLC as the general partner, the fund primarily invests in futures contracts on heating oil traded on the New York Mercantile Exchange (NYMEX); it may also hold futures contracts on related petroleum products including crude oil, gasoline, and natural gas, as well as cash and cash equivalents, employing a market-neutral strategy to replicate price movements without physical delivery. Headquartered in the United States and listed on NYSE Arca, UHN targets investors seeking exposure to U.S. energy commodity markets, particularly the refined products segment focused on distillates, with assets under management of approximately $8.24 million and a net expense ratio of 0.75%. The fund, formerly known as United States Heating Oil Fund, LP, reflects a name change to better align with its focus on diesel-heating oil futures amid regulatory shifts toward ultra-low sulfur specifications. No major acquisitions, funding rounds, partnerships, or new product launches have been reported for the fund in the last 1-2 years, with its operations remaining stable under United States Commodity Funds LLC.