S&P 100 Index (European-style options) (XEO) Options History

Historical options analytics archive for XEO with monthly max pain, implied volatility, gamma exposure, and put/call data.

233 months of complete options data available.

XEO monthly aggregates over the last 6 months: ATM IV, max pain, net GEX, and put/call ratioAverage ATM IVAverage ATM IV14%16%18%20%25-1226-0126-0226-0326-0426-05MonthIVMonth-End Max PainMonth-End Max Pain$2800$2900$3000$3100$3200$3300$340025-1226-0126-0126-0226-0226-0326-0326-0426-04MonthStrike ($)Month-End Net GEXMonth-End Net GEX$0$500.0K$1.0M25-1226-0126-0226-0326-0426-05MonthGEXAverage P/C RatioAverage P/C Ratio0.000.010.020.030.0425-1226-0126-0226-0326-0426-05MonthP/C
Month-by-month aggregates from the XEO daily snapshot archive. IV and P/C are averages across days in the month; max pain and net GEX are end-of-month values.

XEO monthly aggregates

Month-by-month rollups derived from the daily snapshot archive for XEO. Volatility and put/call columns are averages across trading days within the month; max pain, net GEX, and net DEX are the end-of-month values (last trading day of the month).

MonthDaysAvg ATM IVAvg IV RankEnd Max PainEnd Net GEXEnd Net DEXAvg P/C
2026-052015.3%27.3%-$1.4M-$11.0M0.00
2026-042117.2%28.2%$3010.00$982.3K-$8.1M0.00
2026-032221.6%37.6%$3180.00-$400.3K$1.5M0.04
2026-021916.2%18.6%$3400.00$460.9K$378.6K0.00
2026-012013.5%10.6%$3200.00$272.0K$177.8K0.00
2025-122213.2%13.5%$2800.00-$8.3K$1.4M0.00

2026

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2025

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