Citigroup Inc. (C) Options History
Historical options analytics archive for C with monthly max pain, implied volatility, gamma exposure, and put/call data.
237 months of complete options data available.
C monthly aggregates
Month-by-month rollups derived from the daily snapshot archive for C. 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).
| Month | Days | Avg ATM IV | Avg IV Rank | End Max Pain | End Net GEX | End Net DEX | Avg P/C |
|---|---|---|---|---|---|---|---|
| 2026-09 | 21 | 30.6% | 30.8% | $135.00 | -$22.0M | -$1.56B | 0.76 |
| 2026-08 | 21 | 27.3% | 16.2% | $130.00 | $4.3M | -$1.92B | 0.84 |
| 2026-07 | 22 | 31.7% | 37.6% | $130.00 | $21.7M | -$2.35B | 0.76 |
| 2026-06 | 19 | 32.2% | 39.4% | $120.00 | $26.3M | -$3.43B | 0.78 |
| 2026-05 | 20 | 31.3% | 35.5% | $97.50 | $52.6M | -$3.36B | 0.81 |
| 2026-04 | 21 | 34.8% | 36.7% | $120.00 | $72.8M | -$4.20B | 0.83 |
This archive aggregates C's daily end-of-day options snapshots into monthly summaries, spanning 2007-01 through 2026-09. Each month rolls up the underlying snapshot archive, which provides continuous end-of-day coverage from 2007 to present: implied-volatility levels, IV rank, and the put/call ratio are time-averaged across the month; total call and put volume are summed; and dealer positioning (net gamma and delta exposure) and the max-pain strike are taken at the month's final trading day. The result is a long-horizon view of how C option pricing, volatility regime, and dealer hedging pressure evolved month over month, useful for backtesting strategy assumptions and for studying volatility-regime shifts around earnings and macro events. The most recent aggregated month (2026-09) shows an average ATM implied volatility near 30.6%, a month-end max-pain strike around $135.00, an average put/call ratio of 0.76.
2026
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep
2025
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2024
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2023
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2022
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2021
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2020
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2019
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2018
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2017
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2016
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2015
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2014
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2013
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2012
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2011
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2010
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2009
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2008
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2007
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Frequently asked C history questions
- How much options history is available for C?
- This archive holds 237 months of C options analytics, spanning 2007-01 through 2026-09. Each entry is a monthly rollup of C's daily end-of-day options snapshot record, which provides continuous coverage from 2007 to present. Use the year-grouped links on this page to jump to any specific month within the C archive.
- What data does each monthly C aggregate contain?
- Every monthly row summarizes that month of C option activity: time-averaged ATM implied volatility and IV rank, the month-end max-pain strike, end-of-month net dealer gamma (GEX) and delta (DEX) exposure, the average put/call ratio, and total call and put volume. For example, 2026-09 recorded an average ATM implied volatility near 30.6%, an average IV rank of 30.8%, a month-end max-pain strike around $135.00, an average put/call ratio of 0.76.
- How is the C options-history archive built and how often does it update?
- The archive is derived from C's daily end-of-day options snapshots, which capture spot, the full listed chain, implied volatility, and dealer-positioning exposures each trading day. Those daily records are rolled up into the monthly summaries shown here and refreshed as new end-of-day data lands. Traders use the long-horizon view to backtest strategy assumptions, study how C's volatility regime shifts around earnings and macro events, and compare current dealer positioning against historical norms.