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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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ACLS short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float5.3%30,679,200 float shares
Days to Cover4.0406,026 average daily volume
Open Short Position1,612,811Axcelis Technologies, Inc. Com
Change vs Previous-156,998-8.9%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20261,612,811-156,998-8.9%4.05.3%
Jul 15, 20261,769,809-129,276-6.8%3.15.8%
Jun 30, 20261,899,085-14,772-0.8%2.76.2%

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, 202648,602080,79360.2%3
Aug 20, 202648,501084,16457.6%3
Aug 19, 2026113,0270174,07664.9%3
Aug 18, 202641,880079,64152.6%3
Aug 17, 202657,1970116,83049.0%3
Aug 14, 202639,433083,50547.2%3
Aug 13, 202642,7641861,59969.4%3
Aug 12, 202667,47814697,79569.0%3
Aug 11, 202658,78889394,25062.4%3
Aug 10, 202678,4600130,85760.0%3
Aug 7, 2026119,2110184,20764.7%3
Aug 6, 2026338,4140440,37576.8%3
Aug 5, 2026197,4850288,32368.5%3
Aug 4, 202682,86314,358158,19252.4%3
Aug 3, 2026104,2410170,44661.2%3
Jul 31, 2026109,349166162,67767.2%3
Jul 30, 202697,84510130,16475.2%3
Jul 29, 2026105,5461,597182,44157.9%3
Jul 28, 2026112,2131,334269,09441.7%3
Jul 27, 202685,4870140,36860.9%3
Jul 24, 202662,1130111,93355.5%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.