CORN Options History — October 2025

In October 2025, CORN traded between $17.23 and $17.93. ATM implied volatility averaged 15.2%, placing in the 9.9% IV rank vs the trailing year. The 30-day expected move averaged 4.2%. IV traded above realized volatility by 5.5% (HV 20d: 9.7%). Max pain ranged from $17.00 to $18.00. Net GEX was positive for 23 of 23 trading days. Term structure was in contango for 13 of 23 days. Put/call ratio averaged 0.43.

Notable Days

  • 2025-10-28: Highest Volume — 659 contracts
  • 2025-10-09: Largest IV spike — 79.6% change
  • 2025-10-14: Highest IV Rank — 20.2%
  • 2025-10-29: Largest Expected Move — 5.6%

Monthly Statistics

MetricAvgMinMaxOpenClose
Price$17.58$17.23$17.93$17.55$17.80
Max Pain$17.13$17.00$18.00$18.00$17.00
ATM IV15.2%11.0%19.9%13.4%17.9%
Expected Move4.2%3.3%5.6%3.8%5.1%
HV 20d9.7%8.0%11.0%10.9%9.7%
HV 60d12.4%12.1%12.9%12.9%12.1%
IV Rank9.9%0.8%20.2%6.0%15.9%
IV Percentile18.0%0.8%53.6%5.6%36.5%
Term Structure0.3%-3.5%4.7%-1.5%-2.1%
VWIV15.3%9.9%19.7%17.6%18.1%
Skew 25d-0.8%-9.2%4.3%2.6%-6.4%
Skew 10d8.8%-8.3%36.0%13.5%15.1%
Call IV 25d15.7%12.2%22.6%15.1%19.2%
Put IV 25d14.9%8.6%20.0%17.7%12.8%
Bid-Ask Spread %100.7894.60105.68101.47105.49
Gamma HHI0.500.370.610.490.50
Net GEX243.3K35.9K320.5K286.4K290.6K
Net DEX-2.8M-3.6M-1.8M-3.5M-3.2M
Net VEX-14.8K-19.2K-12.5K-19.2K-15.9K
Div Yield0.0%0.0%0.0%0.0%0.0%
P/C Ratio0.430.002.500.370.03
Total Volume211.52224659142104
Total OI6,091.5225,2456,9156,8855,923

Daily Data (23 trading days)

DatePriceMax PainATM IVExp MoveHV 20dIV RankVWIVSkew 25dTerm StrGEXDEXVEXP/CSpread %Call WallPut WallCall VolPut VolCall OIPut OI
2025-10-01$17.55$18.0013.4%3.8%10.9%6.0%17.6%2.6%-1.5%286.4K-3.5M-19.2K0.37101.47N/AN/A104385,7841,101
2025-10-02$17.66$18.0014.0%4.0%11.0%7.4%15.3%4.3%-3.5%315.3K-3.4M-18.4K0.04101.98N/AN/A575255,7931,122
2025-10-03$17.61$18.0012.4%3.6%11.0%3.9%15.1%4.1%0.2%274.9K-3.0M-16.6K0.02103.11N/AN/A37175,3321,140
2025-10-06$17.63$17.0012.9%4.0%10.7%4.9%13.7%1.0%2.4%286.4K-3.0M-15.4K0.8894.60N/AN/A1531345,1811,140
2025-10-07$17.52$17.0015.2%3.3%10.8%10.0%11.1%-0.2%0.2%320.5K-3.1M-15.4K0.0194.87N/AN/A7215,2771,265
2025-10-08$17.58$17.0011.0%4.3%10.8%0.8%14.6%-0.2%-0.3%311.7K-3.1M-15.8K0.0497.88N/AN/A4525,2791,265
2025-10-09$17.47$17.0019.8%3.6%10.9%20.0%13.8%0.6%4.7%214.8K-2.5M-15.2K0.0096.44N/AN/A7605,2701,266
2025-10-10$17.31$17.0014.2%4.4%9.0%7.7%16.0%2.2%2.2%95.1K-2.1M-14.3K0.0399.08N/AN/A13945,0121,266
2025-10-13$17.23$17.0017.7%4.5%8.8%15.4%15.4%2.7%1.2%35.9K-1.8M-13.3K1.68100.01N/AN/A871465,0201,266
2025-10-14$17.27$17.0019.9%4.7%8.0%20.2%16.1%3.8%0.2%45.6K-1.8M-13.5K0.0599.56N/AN/A195105,0491,343
2025-10-15$17.42$17.0015.8%4.5%8.7%11.3%15.3%1.9%1.1%168.4K-2.2M-13.3K2.4698.81N/AN/A561385,1051,348
2025-10-16$17.52$17.0012.1%3.5%8.9%3.1%14.4%1.9%4.3%224.2K-2.4M-13.8K0.0599.24N/AN/A14175,1431,384
2025-10-17$17.52$17.0014.8%4.3%8.9%9.2%15.6%1.1%-0.3%250.5K-2.6M-13.4K0.0399.76N/AN/A13045,1511,385
2025-10-20$17.56$17.0015.4%4.4%8.7%10.3%15.5%1.7%-1.0%256.8K-2.6M-13.2K1.0099.41N/AN/A23234,659586
2025-10-21$17.45$17.0012.0%3.4%8.6%2.9%9.9%-6.6%-0.1%244.3K-2.4M-13.2K0.04104.26N/AN/A628254,688589
2025-10-22$17.51$17.0013.7%3.9%8.7%6.7%13.9%1.2%2.6%260.5K-2.4M-12.5K0.53101.94N/AN/A96514,678589
2025-10-23$17.68$17.0014.2%4.1%9.5%7.7%17.3%-5.1%1.6%273.2K-2.7M-12.9K2.50104.33N/AN/A441104,743589
2025-10-24$17.61$17.0014.3%4.1%9.5%8.1%13.6%-4.7%0.8%258.6K-2.4M-13.4K0.01105.47N/AN/A19414,657694
2025-10-27$17.84$17.0015.0%4.3%10.5%9.5%15.5%-0.2%-0.3%289.5K-3.1M-14.2K0.0399.84N/AN/A19154,797695
2025-10-28$17.89$17.0015.3%4.4%9.6%10.2%18.6%-8.2%0.4%292.7K-3.4M-14.4K0.00102.25N/AN/A65814,885692
2025-10-29$17.93$17.0019.4%5.6%9.5%19.2%19.7%-9.2%-2.5%295.4K-3.6M-16.9K0.00105.68N/AN/A2405,280692
2025-10-30$17.80$17.0018.6%5.3%9.7%17.3%15.2%-7.0%-3.1%303.8K-3.5M-16.3K0.08102.41N/AN/A2525,290692
2025-10-31$17.80$17.0017.9%5.1%9.7%15.9%18.1%-6.4%-2.1%290.6K-3.2M-15.9K0.03105.49N/AN/A10135,231692