Merck & Co., Inc. (MRK) Most Active Options
The 25 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 Aug 24, 2026, 3:55 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 $165 call | Sep 18, 2026 | 25d | $0.67 | 29.1% | 50 | 0.13 | 28,213 | 12,476 | 70.2× avg |
| MRK $150 call | Sep 18, 2026 | 25d | $4.85 | 28.1% | 62 | 0.55 | 4,700 | 2,837 | 38.6× avg |
| MRK $160 call | Sep 18, 2026 | 25d | $1.39 | 0.0% | 0 | 1.00 | 1,292 | 2,427 | 13.6× avg |
| MRK $155 call | Sep 18, 2026 | 25d | $2.65 | 27.7% | 61 | 0.37 | 1,360 | 2,293 | 31.2× avg |
| MRK $150 call | Aug 28, 2026 | 4d | $2.90 | 35.5% | 27 | 0.56 | 730 | 1,564 | 5.5× avg |
| MRK $152.5 call | Sep 18, 2026 | 25d | $3.50 | 29.4% | 65 | 0.46 | — | 1,057 | 14.4× avg |
| MRK $180 call | Oct 16, 2026 | 53d | $0.51 | — | 18 | — | 986 | 880 | 127.9× avg |
| MRK $150 call | Oct 16, 2026 | 53d | $6.64 | 28.3% | 65 | 0.55 | 2,773 | 771 | 5.8× avg |
| MRK $155 call | Aug 28, 2026 | 4d | $0.80 | 36.4% | 29 | 0.24 | 1,979 | 720 | 2.5× avg |
| MRK $152.5 call | Aug 28, 2026 | 4d | $1.53 | 37.1% | 31 | 0.39 | 568 | 671 | 2.3× avg |
| MRK $145 put | Oct 16, 2026 | 53d | $3.90 | — | 94 | — | 530 | 666 | 13.8× avg |
| MRK $145 put | Sep 18, 2026 | 25d | $2.35 | 29.5% | 75 | -0.29 | 1,709 | 507 | 11.8× avg |
| MRK $150 put | Aug 28, 2026 | 4d | $1.90 | 37.0% | 7 | -0.44 | 728 | 488 | 2.9× avg |
| MRK $148 put | Aug 28, 2026 | 4d | $1.05 | 34.1% | 7 | -0.29 | 290 | 380 | 2.3× avg |
| MRK $125 put | Jan 15, 2027 | 144d | $2.75 | 33.6% | 7 | -0.15 | 751 | 317 | 14.4× avg |
| MRK $165 call | Oct 16, 2026 | 53d | $2.02 | 28.1% | 26 | 0.22 | 950 | 300 | 2.7× avg |
| MRK $140 put | Apr 16, 2027 | 235d | $9.45 | 33.0% | 7 | -0.33 | 1 | 300 | 2.8× avg |
| MRK $140 put | Sep 18, 2026 | 25d | $1.04 | 0.0% | 0 | 1.00 | 749 | 297 | 12.0× avg |
| MRK $170 call | Aug 28, 2026 | 4d | $0.03 | 49.7% | 20 | 0.01 | 1,511 | 283 | 1.2× avg |
| MRK $165 call | Nov 20, 2026 | 88d | $4.67 | 33.5% | 50 | 0.33 | 852 | 256 | 2.3× avg |
| MRK $160 call | Jan 15, 2027 | 144d | $8.50 | 31.9% | 90 | 0.43 | 850 | 236 | 3.3× avg |
| MRK $155 call | Nov 20, 2026 | 88d | $7.90 | 33.0% | 76 | 0.47 | 382 | 218 | 1.6× avg |
| MRK $120 put | Aug 28, 2026 | 4d | $0.14 | 109.7% | 13 | -0.02 | 206 | 213 | 30.9× avg |
| MRK $180 call | Jan 15, 2027 | 144d | $4.35 | 32.4% | 84 | 0.23 | 1,695 | 195 | 10.8× avg |
| MRK $160 call | Aug 28, 2026 | 4d | $0.17 | 36.3% | 7 | 0.06 | 737 | 194 | 0.8× 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 $165 call expiring in 25 days, with 12,476 contracts traded. Calls dominate the most-active list (17 of the top 25), 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 $165 call expiring Sep 18, 2026, with 12,476 contracts traded as of Aug 24, 2026.
How does OptiView rank the most active MRK options?
The table lists the 25 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.