Grade A · Historical Performance·Data as of Jun 4, 2026

MRK Grade A Options Flow

23 Grade A institutional flow signals on MRK, captured via the live OPRA tape with CBOE Rule 6.11 sweep detection and Black-Scholes-Merton Greeks. Methodology at /methodology.

Total Grade A

Closed positions

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Outcome breakdown

How MRK Grade A signals have closed

BIG_WIN

WIN

SMALL_WIN

LOSS

BIG_LOSS

EXPIRED

SCRATCH

DTE Performance

Where MRK Grade A signals perform

6-30 DTE

33.3%

2 / 6 closed

30+ DTE

75%

6 / 8 closed

Extremes

Best and worst Grade A MRK closures

Best winner

+82.5%

Single Grade A MRK trade return

Worst loser

-36.1%

DTE-based exit rule capped the loss

Recent Grade A MRK activity

Last 5 Grade A prints

Size-bucketed for public view. Exact strikes, expirations, and entry premiums are visible only in the live scanner.

BIG_WIN

$500K+ puts · sweep

Apr 20, 2026

+82.5%

LOSS

$1M+ calls · block 1m

Apr 17, 2026

-34.0%

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Related HEALTHCARE Grade A

Grade A performance on related healthcare tickers

LLY Grade A →UNH Grade A →MRNA Grade A →JNJ Grade A →ISRG Grade A →

Methodology. Grade A signals pass the institutional-flow filter pipeline: institutional premium floor, contract-level volume baseline, aggressive fill detection, market-maker filtering, opening-position classification. See /methodology for the full data methodology. Exit rules are DTE-based: 0DTE +20%/-20%, 1-5 DTE +25%/-25%, 6-30 DTE +40%/-30%, 30+ DTE +30%/-30%. See the full data methodology →.