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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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AMPH short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float15.8%31,283,700 float shares
Days to Cover11.9414,646 average daily volume
Open Short Position4,928,331Amphastar Pharmaceuticals, Inc
Change vs Previous+753,871+18.1%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20264,928,331+753,871+18.1%11.915.8%
Jul 15, 20264,174,460+328,884+8.6%11.213.3%
Jun 30, 20263,845,576+45,992+1.2%5.212.3%

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, 202661,73116289,47269.0%3
Aug 20, 202676,086365124,14661.3%3
Aug 19, 2026107,3560156,36768.7%3
Aug 18, 202685,84499156,14455.0%2
Aug 17, 2026170,9220225,89375.7%3
Aug 14, 202688,3880115,37876.6%3
Aug 13, 202678,5750120,73365.1%2
Aug 12, 202684,7200141,56659.8%2
Aug 11, 202686,4410133,46464.8%2
Aug 10, 2026183,6600254,00472.3%3
Aug 7, 2026435,2621,132541,00980.5%3
Aug 6, 2026162,9390229,14371.1%3
Aug 5, 2026129,0890162,38279.5%2
Aug 4, 202677,4780128,09360.5%3
Aug 3, 202686,289111145,36759.4%3
Jul 31, 202689,2500131,71767.8%3
Jul 30, 202694,7220140,19667.6%3
Jul 29, 202656,2410110,02851.1%3
Jul 28, 202698,440437151,88164.8%2
Jul 27, 202661,8700104,62559.1%2
Jul 24, 2026113,5930162,87669.7%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.