CORN Options History — July 2025

In July 2025, CORN traded between $17.24 and $18.14. ATM implied volatility averaged 21.6%, placing in the 25.6% IV rank vs the trailing year. The 30-day expected move averaged 6.1%. IV traded above realized volatility by 2.5% (HV 20d: 19.1%). Max pain ranged from $18.00 to $18.00. Net GEX was positive for 22 of 22 trading days. Term structure was in contango for 1 of 22 days. Put/call ratio averaged 0.26.

Notable Days

  • 2025-07-17: Highest Volume — 434 contracts
  • 2025-07-08: Largest IV drop — 16.8% change
  • 2025-07-07: Highest IV Rank — 40.2%
  • 2025-07-01: Largest Expected Move — 6.8%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$17.51$17.24$18.14$17.59$17.28
Max Pain$18.00$18.00$18.00$18.00$18.00
ATM IV21.6%17.7%28.4%23.7%22.1%
Expected Move6.1%5.1%6.8%6.8%6.3%
HV 20d19.1%15.9%20.6%15.9%16.7%
HV 60d15.7%14.4%16.6%14.4%15.3%
IV Rank25.6%17.2%40.2%30.2%26.8%
IV Percentile68.2%32.1%96.8%88.1%74.6%
Term Structure-2.7%-6.5%0.2%-2.2%-3.6%
VWIV20.8%15.3%25.2%22.9%15.3%
Skew 25d-0.2%-4.6%8.8%-3.8%8.8%
Skew 10d-0.2%-13.8%13.4%13.4%10.3%
Call IV 25d20.7%14.1%25.3%22.3%14.7%
Put IV 25d20.5%18.0%23.5%18.5%23.5%
Bid-Ask Spread %92.0188.60100.45100.4590.48
Gamma HHI0.350.260.470.300.30
Net GEX127.6K39.4K270.0K181.0K58.8K
Net DEX-526.5K-1.8M-15.4K-893.3K-102.6K
Net VEX-5.8K-10.4K-3.9K-8.0K-4.1K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.260.001.180.730.29
Total Volume101.818174343836
Total OI10,667.13610,43010,99610,59210,650

Daily Data (22 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-07-01$17.59$18.0023.7%6.8%15.9%30.2%22.9%-3.8%-2.2%181.0K-893.3K-8.0K0.73100.45N/AN/A221610,142450
2025-07-02$17.98$18.0023.3%6.7%17.7%29.2%23.3%2.5%-0.8%247.6K-1.5M-9.9K0.5097.01N/AN/A402010,155466
2025-07-03$18.14$18.0025.9%6.6%17.5%34.9%20.9%-1.8%-4.4%270.0K-1.8M-10.4K0.1693.59N/AN/A1262010,135466
2025-07-07$17.56$18.0028.4%6.7%20.6%40.2%23.9%-4.6%-3.3%164.6K-750.1K-6.9K0.0291.20N/AN/A42110,158486
2025-07-08$17.34$18.0023.6%6.3%20.6%30.0%22.6%-4.1%-2.9%134.0K-454.8K-5.9K0.2389.11N/AN/A1022310,180487
2025-07-09$17.36$18.0021.8%6.3%19.6%26.1%20.0%-1.4%-2.6%127.2K-421.8K-5.9K0.0892.28N/AN/A61510,269472
2025-07-10$17.38$18.0021.4%6.1%19.6%25.3%0.0%-4.6%-2.8%124.1K-402.0K-5.4K0.0288.80N/AN/A44110,264470
2025-07-11$17.25$18.0019.7%5.6%19.7%21.5%22.4%-4.0%-3.0%102.2K-290.6K-5.1K0.0089.45N/AN/A208110,317469
2025-07-14$17.45$18.0020.3%5.8%20.3%22.8%25.2%-3.2%-4.1%129.7K-489.4K-5.4K0.0689.14N/AN/A101610,293470
2025-07-15$17.47$18.0020.5%5.9%20.1%23.3%21.2%-3.0%-4.3%149.2K-603.3K-5.6K0.1389.86N/AN/A15210,328473
2025-07-16$17.63$18.0021.1%6.0%19.8%24.5%20.9%-2.1%-4.0%165.8K-571.6K-5.6K0.2688.60N/AN/A701810,332473
2025-07-17$17.54$18.0022.2%6.4%19.6%27.0%22.2%-4.3%-4.1%154.6K-552.4K-5.4K0.4488.63N/AN/A30113310,321458
2025-07-18$17.80$18.0020.5%5.9%20.0%23.3%20.5%-1.5%-6.5%152.2K-674.7K-6.1K0.1292.41N/AN/A1131310,441555
2025-07-21$17.59$18.0021.4%6.1%20.2%25.1%19.1%2.9%-1.0%117.3K-500.7K-5.2K1.0090.71N/AN/A69699,946484
2025-07-22$17.48$18.0019.3%5.5%19.3%20.6%20.0%0.5%-0.0%89.1K-297.1K-4.8K0.1790.36N/AN/A4789,941523
2025-07-23$17.47$18.0019.5%5.6%19.1%21.2%21.5%-1.6%0.2%88.1K-294.0K-4.6K0.0490.75N/AN/A14469,965529
2025-07-24$17.57$18.0020.1%5.8%18.8%22.4%19.5%2.8%-0.1%99.4K-370.3K-5.0K0.0593.58N/AN/A1841010,071530
2025-07-25$17.51$18.0022.2%6.4%18.8%26.9%21.1%0.9%-4.7%97.8K-367.9K-5.2K0.0693.42N/AN/A66410,103524
2025-07-28$17.34$18.0020.2%5.8%18.7%22.6%18.2%6.2%-2.3%64.8K-155.8K-4.4K0.0591.60N/AN/A43210,095525
2025-07-29$17.24$18.0017.7%5.1%18.7%17.2%17.7%3.4%-0.3%39.4K-15.4K-3.9K0.0496.30N/AN/A23110,103525
2025-07-30$17.27$18.0020.3%5.8%18.7%23.0%17.3%6.9%-3.7%49.8K-68.6K-4.1K1.1896.47N/AN/A111310,118515
2025-07-31$17.28$18.0022.1%6.3%16.7%26.8%15.3%8.8%-3.6%58.8K-102.6K-4.1K0.2990.48N/AN/A28810,128522