Merck & Co., Inc. (MRK) Most Active Options
The 21 most actively traded Merck & Co., Inc. (MRK) option contracts at the latest daily snapshot, ranked by volume. Each row shows the contract's price, implied volatility, delta, open interest, and how today's volume compares with its own 30-day average — click a contract to analyze it in the OptiView platform.
Data as of Jul 10, 2026, 8:00 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Most Active MRK Contracts
| Contract | Expiration | DTE | Last | IV | IV rank (30d) | Delta | Open interest | Volume | vs 30d avg |
|---|---|---|---|---|---|---|---|---|---|
| MRK $140 call | Sep 18, 2026 | 70d | $1.65 | 30.1% | 35 | 0.19 | 5,606 | 3,547 | 29.0× avg |
| MRK $136 call | Jul 31, 2026 | 21d | $0.32 | 32.4% | 52 | 0.12 | 1,919 | 1,907 | 49.4× avg |
| MRK $140 call | Aug 21, 2026 | 42d | $0.93 | 32.4% | 46 | 0.14 | 2,645 | 1,763 | 14.4× avg |
| MRK $135 call | Jul 17, 2026 | 7d | $0.01 | 36.2% | 13 | 0.04 | 4,799 | 1,624 | 30.4× avg |
| MRK $125 call | Aug 21, 2026 | 42d | $4.85 | 32.3% | 86 | 0.48 | 2,865 | 969 | 7.5× avg |
| MRK $140 call | Aug 14, 2026 | 35d | $0.82 | 34.1% | 54 | 0.13 | 6 | 950 | 7.8× avg |
| MRK $130 call | Aug 21, 2026 | 42d | $2.85 | 31.9% | 85 | 0.34 | 2,775 | 922 | 7.1× avg |
| MRK $125 call | Jul 17, 2026 | 7d | $1.22 | 25.8% | 23 | 0.38 | 6,684 | 844 | 4.9× avg |
| MRK $135 call | Oct 16, 2026 | 98d | $3.50 | 29.3% | 33 | 0.31 | 1,254 | 813 | 24.7× avg |
| MRK $126 call | Jul 24, 2026 | 14d | $1.58 | 27.6% | 55 | 0.37 | 62 | 572 | 5.5× avg |
| MRK $125 put | Jul 17, 2026 | 7d | $2.60 | 26.0% | 59 | -0.62 | 1,589 | 476 | 17.0× avg |
| MRK $120 call | Jan 15, 2027 | 189d | $12.93 | 32.3% | 54 | 0.60 | 5,623 | 312 | 14.1× avg |
| MRK $135 call | Aug 21, 2026 | 42d | $1.68 | 32.0% | 44 | 0.23 | 4,611 | 311 | 2.5× avg |
| MRK $130 call | Jul 17, 2026 | 7d | $0.20 | 29.7% | 51 | 0.11 | 5,885 | 305 | 1.8× avg |
| MRK $140 call | Oct 16, 2026 | 98d | $2.27 | 29.0% | 29 | 0.23 | 1,012 | 230 | 7.0× avg |
| MRK $135 call | Sep 18, 2026 | 70d | $2.62 | 30.2% | 35 | 0.28 | 4,189 | 209 | 1.7× avg |
| MRK $124 call | Jul 17, 2026 | 7d | $1.56 | 25.7% | 22 | 0.47 | 61 | 192 | 1.1× avg |
| MRK $145 call | Oct 16, 2026 | 98d | $1.51 | 28.9% | 28 | 0.16 | 536 | 183 | 5.6× avg |
| MRK $100 put | Aug 21, 2026 | 42d | $0.24 | 39.0% | 14 | -0.05 | 2,526 | 177 | 14.2× avg |
| MRK $126 call | Aug 7, 2026 | 28d | $3.75 | 31.6% | 87 | 0.43 | 8 | 167 | 1.1× avg |
| MRK $120 put | Jul 17, 2026 | 7d | $0.51 | 27.0% | 18 | -0.21 | 2,244 | 139 | 2.8× avg |
Ranked by volume at the latest daily snapshot. "vs 30d avg" compares today's volume with the contract's own 30-day average.
The most active MRK contract today is the $140 call expiring in 70 days, with 3,547 contracts traded. Calls dominate the most-active list (18 of the top 21), showing where trading interest concentrates. 10 of these contracts are running well ahead of the usual daily volume.
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MRK Options FAQ
Which MRK option contract is most active today?
The most traded MRK contract is the $140 call expiring Sep 18, 2026, with 3,547 contracts traded as of Jul 10, 2026.
How does OptiView rank the most active MRK options?
The table lists the 21 MRK contracts with the highest volume at the latest daily snapshot, alongside price, implied volatility, delta, open interest, and each contract's volume versus its own 30-day average.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.