MRK $149.83 pinning levels as of 2026-08-27 · 16:16 ET (after hours)

$MRK

MERCK & CO. INC.

▼ -3.28   (-2.14%)
Snapshot $149.83 · · 2026-08-27 · 16:16 ET (after hours)

The Levels

Put Wall $135 held 4 sessions
Gamma Flip $122 +22.9% above flip
Call Wall $165 held 2 sessions
spot $149.83

Regime pinning · moves get faded back to the walls.

Each wall is the strike carrying the heaviest open interest within 15% of price, call above as resistance, put below as support, pooled across all listed expirations. It is a structural positioning level, not a single expiry pin. Max pain is tracked separately.

The Read

$MRK is in long gamma at heat 38, which means dealer hedging damps price swings. The $125 call and $110 put walls are both untested yesterday; however, given their hold rates of 71% and 86%, respectively, these levels dealers typically defend. Spot sits 8.1% above the $110.29 gamma flip, so any move down faces a strong test at the $110 put.

Where the market is positioned


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Free. No login. Real dealer positioning on $MRK, scored over a year of outcomes.

IV percentile · 1y 15 · premium quiet Put / call · OI · all expiries 0.58 · calls-heavy

Plays at the Walls

Covered Call

$157.5 · Oct 2 · 31Δ

$2.56 premium  ·  18%/yr annualized

Cash-Secured Put

$144 · Sep 25 · 30Δ

$2.28 premium  ·  21%/yr annualized

Not investment advice · Informational only


How our calls on $MRK have played out

Over the last 21 sessions · n=28

28 Walls Called
3 Held 75% 2 pinned · 1 rejected
1 Broke 25%
24 Untested

$155 call wall

held 1 sessions running

$150 call wall

broke 1.7% on 2026-08-21


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Scored Levels


Implied vs Measured


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