The United States Oil Fund, LP (USO) manages a portfolio primarily composed of NYMEX WTI crude oil futures contracts and OTC commodity swaps to deliver investors exposure to oil price fluctuations. In Q2 2026, USO faced persistent challenges from regulatory accountability levels exceeding futures holdings and structural market conditions like contango that increase tracking error relative to spot prices. The fund’s credit risk is managed through established counterparties with ISDA agreements, while liquidity is supported by a substantial cash balance invested mainly in U.S. Treasuries. Recent ETF outflows underscore investor sensitivity to crude volatility and emphasize the importance of liquidity management. These factors collectively illustrate the complexities commodity-focused ETFs face in replicating physical commodity returns within regulatory and market constraints [S1][S2][S12][F1][N2].