Corn Futures COT Brief: Week Ending 2026-03-20

Executive summary

A significant surge in speculative buying continued this week, driving the Managed Money net long position to its most bullish level in the provided reporting history. This aggressive buying, composed of both new longs and continued short-covering, has fueled the price rally seen throughout March. In response, Commercials (Producers/Merchants) have ramped up their hedging activity, establishing a deeply net short position. The market dynamic is a classic standoff between bullish speculators and price-sensitive commercial sellers, with rising open interest suggesting new capital is flowing into the long side of the trade.

Positioning

• Managed Money (MM): This key speculative group now holds a net long position of +230,888 contracts (343,658 long vs. 112,770 short). This is a dramatic and rapid reversal from a net short position of -13,234 contracts as recently as late February and represents the most bullish stance in the provided data.
• Producer/Merchant (Commercials): Commercials are now net short -563,874 contracts (391,778 long vs. 955,652 short). This is the largest net short position seen over the past several months, indicating aggressive selling and hedging into the recent price strength.
• Swap Dealers: This group holds a substantial net long of +308,251 contracts, a position that has been consistently long throughout the reporting period.
• Non-reportable (Retail): Small speculators hold a net short position of -56,719 contracts.

Flows and week-over-week changes

• Managed Money: The most significant flow came from this category, which increased its net long position by 32,084 contracts. This was achieved through a combination of adding new longs (+13,338 contracts) and, more substantially, covering existing shorts (-18,746 contracts). This indicates strong bullish conviction.
• Producer/Merchant: Commercials added significantly to their net short position, which grew by 49,818 contracts week-over-week. This change was driven almost entirely by the addition of new short positions (+47,449 contracts), with long positions seeing a minor reduction (-2,369 contracts).
• Other Reportables: This category reduced its net long position by 22,477 contracts, driven by a reduction in longs (-10,739) and an increase in shorts (+11,738).

Commercials vs speculators

The divergence between speculative and commercial positioning is stark and widening. Managed Money has undergone a monumental sentiment shift, moving from a net short of over 81,000 contracts in late January to a net long of over 230,000 contracts now. This massive buying has been a primary driver of the recent rally.

Conversely, Commercials are taking the other side of this trade. Their net short position has more than doubled from -233,812 in late December to -563,874 in the current report. This shows that physical market participants view current price levels as an increasingly attractive opportunity to hedge future production and lock in prices.

Open interest and participation

• Total open interest (OI) increased by a healthy 50,191 contracts to 1,773,499. An increase in OI alongside a rising price is typically a bullish confirmation, suggesting that new money is entering the market to support the uptrend.
• Participation remains robust, with a total of 819 traders reported. The key groups driving the outright positioning are Managed Money (95 long vs. 62 short traders) and Producer/Merchants (266 long vs. 346 short traders).
• Market concentration is moderate. The largest four traders by net position account for 8.8% of the long side and 9.0% of the short side, indicating that positioning is not overly concentrated among a few very large players.

Price context

The positioning changes align perfectly with the recent price action. During the reporting week (March 13 to March 20), the front-month contract rallied from a close of 462.0 to 468.75. This is a continuation of a strong rally that began in early March, when prices were trading below 445.0. The massive shift from net short to a large net long by speculators over the past several weeks has been the clear fuel for this price advance.

Risks and watchpoints

• Crowded Speculative Long: The speed and scale of the Managed Money shift to a net long position are extreme. This makes the market vulnerable to a sharp correction if the bullish narrative changes, as a rush for the exits could exacerbate any sell-off.
• Commercial Selling Pressure: The record net short position held by commercials represents a formidable wall of supply. These participants are selling into the rally and will likely continue to do so, potentially capping further significant price gains.
• Short-Covering Fuel Diminishing: A significant portion of the recent rally was fueled by short-covering, with MM shorts falling from over 294,000 in late January to just 112,770 now. With less shorts left to cover, the rally's continuation will depend more heavily on the initiation of fresh long positions.