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    Merck & Co. Inc.

    NYSE: MRK · Real-Time Price · USD
    84.22
    0.01 (0.01%)
    At close: Aug 18, 2025, 3:59 PM
    84.31
    0.11%
    After-hours: Aug 18, 2025, 07:56 PM EDT

    MRK Option Overview

    Overview for all option chains of MRK. As of August 19, 2025, MRK options have an IV of 32.78% and an IV rank of 20.88%. The volume is 40,933 contracts, which is 215.94% of average daily volume of 18,956 contracts. The volume put-call ratio is 0.19, indicating a bullish sentiment in the market.

    Implied Volatility

    Implied Volatility (30d)
    32.78%
    IV Rank
    20.88%
    Historical Volatility
    27.27%
    IV Low
    26.52% on Aug 29, 2024
    IV High
    56.5% on Jun 13, 2025

    Open Interest (OI)

    Today's Open Interest
    625,170
    Put-Call Ratio
    0.75
    Put Open Interest
    267,540
    Call Open Interest
    357,630
    Open Interest Avg (30-day)
    553,321
    Today vs Open Interest Avg (30-day)
    112.99%

    Option Volume

    Today's Volume
    40,933
    Put-Call Ratio
    0.19
    Put Volume
    6,547
    Call Volume
    34,386
    Volume Avg (30-day)
    18,956
    Today vs Volume Avg (30-day)
    215.94%

    Option Chain Statistics

    This table provides a comprehensive overview of all MRK options grouped by their expiration dates.

    Expiration Call Vol Put Vol P/C Vol Call OI Put OI P/C OI Implied Volatility Max Pain
    Aug 22, 2025 23,823 1,826 0.08 9,353 10,250 1.1 49.12% 81
    Aug 29, 2025 1,192 460 0.39 8,737 2,877 0.33 33.98% 81
    Sep 05, 2025 432 1,422 3.29 11,987 2,083 0.17 31.58% 80
    Sep 12, 2025 250 194 0.78 2,201 1,509 0.69 29.48% 80
    Sep 19, 2025 3,830 1,045 0.27 93,284 54,368 0.58 34.79% 80
    Sep 26, 2025 159 29 0.18 1,065 319 0.3 30.32% 80
    Oct 17, 2025 1,946 395 0.2 27,717 29,210 1.05 39.17% 80
    Nov 21, 2025 930 170 0.18 10,072 16,794 1.67 35.45% 80
    Dec 19, 2025 324 117 0.36 44,257 24,644 0.56 45% 85
    Jan 16, 2026 602 422 0.7 50,243 46,238 0.92 39.36% 90
    Mar 20, 2026 295 190 0.64 15,334 22,686 1.48 32.31% 80
    Apr 17, 2026 34 4 0.12 2 9 4.5 30.74% 75
    Jun 18, 2026 203 55 0.27 16,613 20,608 1.24 31.17% 80
    Sep 18, 2026 28 33 1.18 4,059 2,989 0.74 29.69% 80
    Dec 18, 2026 61 35 0.57 8,121 5,414 0.67 31.03% 90
    Jan 15, 2027 181 32 0.18 31,233 16,597 0.53 29.84% 90
    Jun 17, 2027 38 19 0.5 16,241 3,283 0.2 29.65% 80
    Dec 17, 2027 58 99 1.71 7,111 7,662 1.08 29.24% 80

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