Record hedge fund net-long in corn faces pressure

Hedge funds’ record net-long position in corn is under pressure after the most-active Chicago corn futures contract fell as much as 1.1% on Wednesday, extending declines into a fifth consecutive session and erasing much of the recent rally from a three-year high.

Twenty years of Commodity Futures Trading Commission data show commodity funds held their largest net-long exposure in corn as of Sept. 1. Managers had added long positions earlier in the month amid concerns that adverse weather in parts of the United States could reduce yields and that disruptions to Black Sea shipments might tighten global supplies.

The size of the speculative position increases market sensitivity. Corn’s 14-day relative strength index rose above 70 in recent sessions, a reading commonly associated with overbought conditions. A high concentration of long bets can amplify losses if prices continue to fall and trigger stop-loss orders.

Market attention is focused on the U.S. Department of Agriculture’s World Agricultural Supply and Demand Estimates, due on Friday. Analysts polled ahead of the report expect the USDA to lower forecasts for both U.S. and global corn inventories for the 2026-27 season.

The domestic harvest is picking up pace. USDA data show farmers had harvested 5% of the corn crop by Sept. 6, slightly ahead of the same point last year. The arrival of additional physical supply during harvest can put downward pressure on futures, particularly if USDA estimates do not support the recent bullish case.

Traders and fund managers are monitoring the USDA report alongside weather outlooks and export developments to assess whether the recent pullback is a short correction or the start of a longer decline.