Corn futures are currently undergoing their longest slump since June, indicating a downturn in market sentiment. This decline occurs despite a significant influx of capital from hedge funds, which, as of September 1, held the highest net-bullish position on record over the past two decades, according to Commodity Futures Trading Commission data.

Investors were initially drawn to corn due to adverse weather conditions in the United States, the world's leading corn producer, which negatively impacted yields. Additionally, disruptions to crop shipments from the Black Sea region further contributed to rising prices, pushing corn to a three-year high just last week.

However, the market is now experiencing a correction, suggesting that these previous bullish drivers are no longer sufficient to sustain the price rally. The current slump indicates a lack of fresh catalysts to support further price increases, challenging the record bullish positions held by money managers.