Zillow Group, Inc. Class C (Z) Options History
Historical options analytics archive for Z with monthly max pain, implied volatility, gamma exposure, and put/call data.
180 months of complete options data available.
Z monthly aggregates
Month-by-month rollups derived from the daily snapshot archive for Z. 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 |
|---|---|---|---|---|---|---|---|
| 2026-07 | 22 | 69.4% | 57.6% | $35.00 | $48.0K | -$2.9M | 1.04 |
| 2026-06 | 21 | 61.5% | 45.4% | $35.00 | $159.7K | $14.6M | 1.17 |
| 2026-05 | 20 | 62.6% | 47.2% | $40.00 | -$429.6K | $46.1M | 2.79 |
| 2026-04 | 21 | 72.7% | 62.7% | $45.00 | $288.3K | $18.4M | 0.72 |
| 2026-03 | 22 | 60.2% | 43.3% | $45.00 | $21.8K | $42.8M | 1.40 |
| 2026-02 | 19 | 65.2% | 59.6% | $47.50 | $321.6K | $49.5M | 4.87 |
This archive aggregates Z's daily end-of-day options snapshots into monthly summaries, spanning 2011-08 through 2026-07. 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 Z 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 (2026-07) shows an average ATM implied volatility near 69.4%, a month-end max-pain strike around $35.00, an average put/call ratio of 1.04.
2026
Jan | Feb | Mar | Apr | May | Jun | Jul
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
Frequently asked Z history questions
- How much options history is available for Z?
- This archive holds 180 months of Z options analytics, spanning 2011-08 through 2026-07. Each entry is a monthly rollup of Z'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 Z archive.
- What data does each monthly Z aggregate contain?
- Every monthly row summarizes that month of Z 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, 2026-07 recorded an average ATM implied volatility near 69.4%, an average IV rank of 57.6%, a month-end max-pain strike around $35.00, an average put/call ratio of 1.04.
- How is the Z options-history archive built and how often does it update?
- The archive is derived from Z'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 Z's volatility regime shifts around earnings and macro events, and compare current dealer positioning against historical norms.