Option chain for Westlake (WLK): calls and puts for every expiration and strike, with quotes, volume, open interest, implied volatility and greeks. As of Nov 4, 2026, WLK had 5 option expirations, from Nov 20, 2026 to Dec 17, 2027, and 285 contracts traded that day. The nearest expiration, Nov 20, 2026, had an at-the-money implied volatility of 35.7% (-30% on the day) and 23 contracts traded; the busiest was Dec 17, 2027, with 259.

For the latest figures, see WLK options overview.

Key numbers

Expirations: at-the-money implied volatility, change on the day, volume

Nov 20, 2026 (16 days): ATM IV 35.7% (-30%), volume 23
Dec 18, 2026 (44 days): ATM IV 39.8% (+14%), volume 2
Jan 15, 2027 (72 days): ATM IV 41.9% (-9%), volume 0
Apr 16, 2027 (163 days): ATM IV 43.8% (-5%), volume 1
Dec 17, 2027 (408 days): ATM IV 44.5% (-4%), volume 259

Data as of November 4, 2026.

WLK Option Chain

Detailed and comprehensive option chain for each expiration listed for WLK. Includes volume, open interest, implied volatility, and bid/ask for each strike. Investigate further by clicking on a strike and seeing trade activity, volatility movement, and yesterday's closing values. Use the built-in options profit calculator to see the profit or loss of any WLK options strategy.

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