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EOD US-equity data for investors and AI agents

Data is end-of-day, not real-time, and not investment advice

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MRK short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float1.1%2,460,116,000 float shares
Days to Cover3.38,695,853 average daily volume
Open Short Position28,281,375Merck & Co., Inc.
Change vs Previous-1,077,653-3.7%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202628,281,375-1,077,653-3.7%3.31.1%
Jul 15, 202629,359,028-2,022,239-6.4%3.41.2%
Jun 30, 202631,381,267+1,113,975+3.7%2.31.3%

Short interest is an open-position snapshot published twice monthly. It is not daily short-sale volume.

Daily off-exchange short volume

FINRA-reported short-sale transaction flow for the last 30 calendar days.

Trade DateShort VolumeShort ExemptFINRA TotalShort Volume %Facilities
Aug 21, 20262,586,44160,9196,519,29339.7%3
Aug 20, 20263,280,897139,8687,128,89146.0%3
Aug 19, 20264,647,749153,66613,618,49034.1%3
Aug 18, 20261,103,81158,8983,409,41832.4%3
Aug 17, 20261,431,984126,1392,876,83449.8%3
Aug 14, 20261,119,04141,9422,046,45654.7%3
Aug 13, 20261,473,2876,0203,592,05341.0%3
Aug 12, 20261,185,64220,9144,008,09929.6%3
Aug 11, 2026873,49810,0382,183,23640.0%3
Aug 10, 2026824,5316,6781,764,62046.7%3
Aug 7, 2026975,3917,1912,435,41840.1%3
Aug 6, 2026745,13114,7972,460,18130.3%3
Aug 5, 20261,664,502151,6973,748,20444.4%3
Aug 4, 20261,532,1837,9033,694,85641.5%3
Aug 3, 20261,842,6866,6204,380,86242.1%3
Jul 31, 2026954,6447,2632,123,75445.0%3
Jul 30, 20261,375,2512,5792,420,15756.8%3
Jul 29, 20261,160,3493,4372,183,22653.1%3
Jul 28, 20261,063,78143,5533,816,42727.9%3
Jul 27, 2026930,58315,1022,399,80538.8%3
Jul 24, 20261,056,50813,3032,293,68546.1%3

Daily short volume is transaction flow reported through FINRA facilities. It does not measure open short positions and is not consolidated exchange-wide volume.