United States Oil Fund, LP

Recent Form 4 activity at United States Oil Fund, LP (USO) spans 4 filings across 1 insider (all of them on the buy side). Purchases total $23.4M against $14.7M in sales — a roughly balanced mix of buying and selling, for a net purchase of $8.6M. HRT FINANCIAL LP (10% Owner) is the most active by dollar volume, and the single largest transaction was $28.7M by HRT FINANCIAL LP. All figures are drawn from official SEC Form 3, 4, and 5 disclosures and update as new filings arrive.