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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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AMLX short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float16.2%82,568,000 float shares
Days to Cover6.81,959,109 average daily volume
Open Short Position13,401,722Amylyx Pharmaceuticals, Inc. C
Change vs Previous+1,135,729+9.3%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202613,401,722+1,135,729+9.3%6.816.2%
Jul 15, 202612,265,993-2,119,187-14.7%9.214.9%
Jun 30, 202614,385,180+1,263,483+9.6%7.117.4%

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, 2026850,8344,4741,582,86653.8%3
Aug 20, 20262,234,85957,4354,067,37654.9%3
Aug 19, 20262,110,96842,4043,996,06052.8%3
Aug 18, 20265,081,87637,01910,212,31549.8%3
Aug 17, 2026180,1540305,46859.0%3
Aug 14, 2026199,4940610,63432.7%3
Aug 13, 2026168,5760367,68845.8%3
Aug 12, 2026359,3210708,65650.7%3
Aug 11, 2026218,6010302,14972.3%3
Aug 10, 2026316,572570504,02062.8%3
Aug 7, 2026577,1016,5741,057,04954.6%3
Aug 6, 2026503,8582831,312,03438.4%3
Aug 5, 2026196,9470605,19532.5%3
Aug 4, 2026403,2992,6261,721,82923.4%3
Aug 3, 2026311,92734,478666,01746.8%3
Jul 31, 2026415,2818,400707,92758.7%3
Jul 30, 2026383,11301,770,94521.6%3
Jul 29, 2026272,3400925,02729.4%3
Jul 28, 2026752,145441,400,21653.7%3
Jul 27, 2026638,03501,448,93544.0%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.