Option chain for Merck Common (New) (MRK): calls and puts for every expiration and strike, with quotes, volume, open interest, implied volatility and greeks. As of Oct 21, 2026, MRK had 15 option expirations, from Oct 23, 2026 to Jan 19, 2029, and 37,822 contracts traded that day. The nearest expiration, Oct 23, 2026, had an at-the-money implied volatility of 28.3% (-5% on the day) and 3,223 contracts traded; the busiest was Oct 30, 2026, with 22,717.

For the latest figures, see MRK options overview.

Key numbers

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

Oct 23, 2026 (2 days): ATM IV 28.3% (-5%), volume 3,223
Oct 30, 2026 (9 days): ATM IV 48.4% (+2%), volume 22,717
Nov 6, 2026 (16 days): ATM IV 41.8% (-0%), volume 711
Nov 13, 2026 (23 days): ATM IV 37.2% (-3%), volume 478
Nov 20, 2026 (30 days): ATM IV 36.0% (+0%), volume 3,375
Nov 27, 2026 (37 days): ATM IV 36.3% (+5%), volume 27
Dec 18, 2026 (58 days): ATM IV 32.5% (+1%), volume 1,356
Jan 15, 2027 (86 days): ATM IV 32.2% (-0%), volume 3,566
Mar 19, 2027 (149 days): ATM IV 32.6% (-1%), volume 1,340
Apr 16, 2027 (177 days): ATM IV 32.3% (-2%), volume 103
Jun 17, 2027 (239 days): ATM IV 33.8% (+2%), volume 594
Sep 17, 2027 (331 days): ATM IV 32.8% (+0%), volume 142
Dec 17, 2027 (422 days): ATM IV 32.8% (+0%), volume 22
Jan 21, 2028 (457 days): ATM IV 32.1% (-1%), volume 151
Jan 19, 2029 (821 days): ATM IV 32.0% (-0%), volume 17

Data as of October 21, 2026.

MRK Option Chain

Detailed and comprehensive option chain for each expiration listed for MRK. 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 MRK options strategy.

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