The United States Oil Fund (USO) is an ETF that tracks the daily price movements of West Texas Intermediate light, sweet crude oil. The EIA's report of a smaller-than-expected draw in distillates stocks suggests a less tight supply situation than anticipated, which could have mixed effects on oil prices. Lower-than-expected draws might suggest weaker demand or better-than-expected supply levels, potentially leading to lower oil prices. However, market reactions can vary based on broader economic indicators and geopolitical events, making the exact impact on USO uncertain in the short term.