CORN Options History — March 2026

In March 2026, CORN traded between $17.78 and $18.80. ATM implied volatility averaged 29.6%, placing in the 47.3% IV rank vs the trailing year. The 30-day expected move averaged 8.4%. IV traded above realized volatility by 15.2% (HV 20d: 14.4%). Max pain ranged from $17.00 to $18.00. Net GEX was positive for 21 of 21 trading days. Term structure was in contango for 7 of 21 days. Put/call ratio averaged 0.03.

Notable Days

  • 2026-03-20: Highest Volume — 63,908 contracts
  • 2026-03-19: Largest IV spike — 31.0% change
  • 2026-03-24: Highest IV Rank — 95.9%
  • 2026-03-20: Largest Expected Move — 12.6%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$18.39$17.78$18.80$17.82$18.38
Max Pain$17.62$17.00$18.00$17.00$18.00
ATM IV29.6%17.5%44.2%17.5%25.1%
Expected Move8.4%5.0%12.6%5.0%7.2%
HV 20d14.4%9.0%18.8%9.3%18.7%
HV 60d14.7%13.0%15.9%13.2%15.9%
IV Rank47.3%15.5%95.9%15.5%43.7%
IV Percentile85.9%28.2%99.6%28.2%88.1%
Term Structure-0.5%-3.6%3.5%1.7%1.8%
VWIV31.1%15.8%47.4%15.8%27.8%
Skew 25d-6.7%-17.2%-0.9%-0.9%-7.6%
Skew 10d-9.9%-29.5%12.4%0.0%-15.7%
Call IV 25d32.5%16.2%49.2%16.2%29.6%
Put IV 25d25.7%14.5%39.4%15.4%21.9%
Bid-Ask Spread %25.4717.3441.0926.9517.34
Gamma HHI0.260.210.340.260.23
Net GEX3.0M646.6K7.9M662.6K7.9M
Net DEX-51.6M-120.9M-11.1M-11.2M-116.3M
Net VEX-283.0K-751.3K-67.0K-68.5K-751.3K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.030.000.120.080.08
Total Volume19,085.28612663,90813533,663
Total OI89,440.14315,844261,56715,844261,567

Daily Data (21 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2026-03-02$17.82$17.0017.5%5.0%9.3%15.5%15.8%-0.9%1.7%662.6K-11.2M-68.5K0.0826.95N/AN/A1251015,611233
2026-03-03$17.88$17.0020.0%5.7%9.0%21.0%19.0%-2.2%-0.3%657.2K-11.5M-68.5K0.1226.59N/AN/A1692115,663243
2026-03-04$17.78$17.0019.2%5.5%9.2%19.3%16.4%-3.2%-0.4%649.9K-11.1M-67.0K0.0325.73N/AN/A122415,645263
2026-03-05$18.18$17.0022.8%6.0%11.8%27.1%24.3%-2.0%3.5%646.6K-12.1M-68.4K0.0135.09N/AN/A3,0584315,737267
2026-03-06$18.44$17.0025.1%7.6%12.2%32.2%29.1%-7.9%-0.5%658.4K-15.1M-77.7K0.0335.99N/AN/A12,37431717,703308
2026-03-09$18.19$17.0025.6%7.2%13.0%33.2%26.2%-2.2%1.1%1.0M-18.9M-106.0K0.0136.87N/AN/A8,7787927,811621
2026-03-10$18.23$17.0021.4%6.5%12.9%23.9%25.1%-3.2%1.5%1.2M-19.4M-111.9K0.0041.09N/AN/A5,9931831,082676
2026-03-11$18.53$18.0024.1%6.9%13.8%29.8%23.7%-6.8%1.2%1.3M-19.2M-102.6K0.0122.72N/AN/A7,1855630,060690
2026-03-12$18.57$17.0030.1%8.5%13.8%43.0%30.1%-1.1%-2.8%1.4M-22.9M-112.7K0.0027.57N/AN/A27,9836931,491732
2026-03-13$18.63$18.0030.1%7.6%13.6%43.0%30.2%-9.8%-2.1%2.8M-35.3M-150.1K0.0223.70N/AN/A5,14111154,029793
2026-03-16$18.26$18.0028.5%8.6%15.8%39.4%31.6%-12.6%-2.3%2.3M-30.9M-148.3K0.0123.32N/AN/A10,10012256,859901
2026-03-17$18.36$18.0029.8%8.5%15.1%42.3%32.7%-10.4%-1.1%2.4M-34.8M-174.8K0.0120.59N/AN/A6,0118464,941996
2026-03-18$18.60$18.0032.3%9.5%15.5%47.7%33.7%-8.5%-2.3%2.9M-43.4M-198.4K0.0120.80N/AN/A6,7508669,3151,064
2026-03-19$18.80$18.0042.3%11.8%15.7%69.5%44.7%-14.5%-0.9%2.6M-50.9M-219.8K0.0130.12N/AN/A61,33268471,6301,091
2026-03-20$18.74$18.0044.2%12.6%15.8%73.6%47.4%-17.2%0.2%3.2M-81.2M-397.5K0.0419.83N/AN/A61,2782,630115,8061,540
2026-03-23$18.48$18.0040.2%11.6%16.9%88.5%44.0%-5.6%-3.1%4.7M-98.0M-533.1K0.0219.37N/AN/A32,424704153,0493,495
2026-03-24$18.52$18.0042.7%12.3%16.8%95.9%43.6%-8.0%-3.6%5.2M-107.3M-586.7K0.0720.64N/AN/A24,8681,778171,7243,818
2026-03-25$18.74$18.0034.3%9.8%17.1%71.0%35.9%-5.3%-0.3%6.3M-110.6M-601.0K0.0520.52N/AN/A35,1311,588181,3745,309
2026-03-26$18.71$18.0035.4%10.1%17.2%74.3%37.8%-7.5%-0.6%7.0M-120.9M-671.8K0.0221.16N/AN/A22,070516202,5746,392
2026-03-30$18.34$18.0030.7%8.8%18.8%60.3%32.9%-4.6%-0.7%7.3M-113.3M-727.9K0.0318.83N/AN/A26,469847238,2636,877
2026-03-31$18.38$18.0025.1%7.2%18.7%43.7%27.8%-7.6%1.8%7.9M-116.3M-751.3K0.0817.34N/AN/A31,2772,386254,5726,995