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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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ATRC short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float7.9%48,796,500 float shares
Days to Cover3.71,038,652 average daily volume
Open Short Position3,864,377AtriCure, Inc. Common Stock
Change vs Previous-1,000,336-20.6%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20263,864,377-1,000,336-20.6%3.77.9%
Jul 15, 20264,864,713+415,321+9.3%5.710.0%
Jun 30, 20264,449,392+1,005,563+29.2%3.69.1%

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, 2026120,2564184,77065.1%3
Aug 20, 2026308,8390416,38974.2%3
Aug 19, 2026189,111230330,28557.3%3
Aug 18, 2026165,612123309,09953.6%3
Aug 17, 2026231,791503343,22867.5%3
Aug 14, 202688,5450142,62562.1%3
Aug 13, 2026120,3260187,82864.1%3
Aug 12, 2026101,93376174,96658.3%3
Aug 11, 2026157,1030266,50159.0%3
Aug 10, 2026120,6900206,17258.5%3
Aug 7, 2026186,696400268,92269.4%3
Aug 6, 2026237,2660393,18860.3%3
Aug 5, 2026199,550320284,37470.2%2
Aug 4, 2026191,3466344,83555.5%3
Aug 3, 2026201,3344,490509,21439.5%3
Jul 31, 2026409,2200568,59672.0%3
Jul 30, 2026295,120421373,98778.9%3
Jul 29, 2026530,7840653,32781.2%3
Jul 28, 2026312,59113,635486,05664.3%3
Jul 27, 2026305,5300463,75965.9%3
Jul 24, 2026538,9210672,03680.2%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.