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Corn COT — Week of October 2, 2026

Corn (ZC) COT Report — Week Ending October 2, 2026

Executive summary

The Commitments of Traders (COT) report for the week ending October 2, 2026, reveals a market characterized by persistent speculative length alongside significant commercial hedging, against a backdrop of recent price weakness.

Key takeaways for the reporting week: - Managed Money remains heavily net long at +381,220 contracts (439,843 longs vs. 58,623 shorts), despite trimming net length by 22,877 contracts on the week through gross long liquidation (-31,623) outstripping short covering (-8,746). - Commercial Hedgers (Producer/Merchant/Processor/User) cut net short exposure by 40,498 contracts to -732,985 contracts (349,329 longs vs. 1,082,314 shorts), driven primarily by aggressive commercial buying (+34,006 longs). - Total Open Interest nudged higher by 2,812 contracts to 1,857,317 contracts, remaining near multi-month highs. - Price Performance: Front-month ZC corn futures fell from $528.75/bu on September 25 to $497.25/bu on October 2, 2026, marking a breakdown below the psychological $500 level.

Positioning (net, extremes vs recent weeks)

Speculative net positioning in corn has experienced a massive turnaround across 2026: - Managed Money Net Position: Currently stands at +381,220 contracts (longs represent 23.7% of total OI, shorts 3.2%). While down from the peak seen in early-to-mid September 2026 (peaking at +414,459 net long on September 11, 2026), current positioning remains extremely elevated compared to early 2026, when funds held a net short position of -90,658 contracts (January 16, 2026). - Commercial Net Position: Sits at -732,985 contracts (18.8% long vs. 58.3% short of total OI). This represents a slight moderation from the peak commercial net short position of -800,854 contracts logged on September 4, 2026. - Swap Dealers: Maintained a substantial net long position of +284,477 contracts (321,474 longs vs. 36,997 shorts), down from highs near +353,135 contracts in late May 2026.

Flows and week-over-week changes

Weekly positioning adjustments across major participant categories (All-contract basis):

  • Managed Money:
    • Longs: -31,623 contracts
    • Shorts: -8,746 contracts
    • Spreading: +24,895 contracts (rising to 290,375 contracts, 15.6% of OI)
    • Net Change: -22,877 contracts (long liquidation dominant)
  • Producer/Merchant:
    • Longs: +34,006 contracts
    • Shorts: -6,492 contracts
    • Net Change: +40,498 contracts (covering and bargain hunting)
  • Swap Dealers:
    • Longs: -13,408 contracts
    • Shorts: +787 contracts
    • Spreading: +7,062 contracts
    • Net Change: -14,195 contracts
  • Other Reportables:
    • Longs: -816 contracts
    • Shorts: +2,607 contracts
    • Spreading: -19,466 contracts
    • Net Change: -3,423 contracts
  • Non-Reportable (Small Traders):
    • Longs: +2,162 contracts
    • Shorts: +2,165 contracts
    • Net Change: -3 contracts (Net short: -60,993 contracts)

Commercials vs speculators

The structural dynamic continues to pit a heavily entrenched speculative long base against a deeply hedged commercial sector: - Managed Money vs. Producer/Merchant Divergence: The multi-month speculative rally that began in February–March 2026 pushed managed money from net short positions to near-record net longs above 400k contracts by September. Producers aggressively met this rally by expanding gross shorts, exceeding 1.08 million contracts in recent weeks. - Old vs. Other (New Crop/Deferred) Split: - Old Crop (Front/Active): Managed money is net long +330,061 contracts (416,993 long vs. 86,932 short), while producers are net short -690,009 contracts. - Other Crop (Deferred): Managed money is net long +51,159 contracts (60,685 long vs. 9,526 short), with producers holding a net short of -42,976 contracts.

Category                     Longs       Shorts      Net Position
-----------------------------------------------------------------
Managed Money               439,843      58,623        +381,220
Swap Dealers                321,474      36,997        +284,477
Producer/Merchant           349,329   1,082,314        -732,985
Other Reportables           193,009      64,728        +128,281
Non-Reportable              133,051     194,044         -60,993

Open interest and participation

  • Aggregate Open Interest: Total open interest printed at 1,857,317 contracts, a modest weekly expansion of +2,812 contracts (+0.15%). This remains well above the 1.52–1.60 million contract range observed at the start of 2026.
  • Trader Breadth:
    • Total reporting traders: 866 (up from 773 in late December 2025).
    • Managed money gross longs numbered 110 traders against 45 gross shorts and 86 spreading.
    • Producer/merchants displayed broad engagement with 272 longs and 367 shorts.
  • Concentration Ratios:
    • Top 4 traders hold 8.8% of net long and 9.6% of net short open interest.
    • Top 8 traders hold 15.0% of net long and 16.0% of net short open interest.
    • Gross 8-trader concentration stands at 16.7% long and 19.2% short, indicating moderate and stable institutional concentration across the complex.

Price context

Front-month Corn (ZC) futures underwent a sharp downward correction during the week leading up to the October 2, 2026 reporting date: - Price Trajectory: - September 25, 2026: $528.75/bu - September 28, 2026: $522.25/bu - September 30, 2026: $501.25/bu - October 2, 2026: $497.25/bu (-$31.50/bu / -5.96% week-on-week) - Macro COT/Price Alignment: The sell-off from recent peaks ($545.50 on September 1, 2026) directly coincides with managed money reducing gross long exposure (-31,623 contracts this week; down from peak long holdings of 491,034 contracts on September 11). The sharp slide below $500 suggests long liquidation by speculative momentum funds, absorbed by commercial value-buying (+34,006 long contracts).

Risks and watchpoints

  1. Speculative Long Overhang: Despite this week's trimming, managed money gross long positioning (439,843 contracts) remains near the highest levels of the 2026 calendar year. Further technical breakdowns could trigger cascading stop-loss selling and accelerated long liquidation.
  2. Commercial Support Levels: Producer/merchants added 34,006 long hedges during the drop toward sub-$500 prices. Continued commercial buying will be required to stabilize the market against additional fund selling.
  3. Spreading Activity: Managed money spreading jumped by 24,895 contracts this week to 290,375 contracts (15.6% of open interest), pointing to increased calendar and inter-crop roll positioning as market participants reposition across delivery cycles.