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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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PI short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float10.2%29,556,800 float shares
Days to Cover6.4468,603 average daily volume
Open Short Position3,001,563Impinj, Inc. Common Stock
Change vs Previous-349,127-10.4%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20263,001,563-349,127-10.4%6.410.2%
Jul 15, 20263,350,690+15,248+0.5%12.211.3%
Jun 30, 20263,335,442-81,008-2.4%7.411.3%

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, 202684,68838145,70958.1%3
Aug 20, 202654,116086,98762.2%3
Aug 19, 202640,778073,31055.6%3
Aug 18, 202664,946095,56068.0%3
Aug 17, 202664,973320103,90062.5%3
Aug 14, 202660,69320119,14150.9%3
Aug 13, 202685,37211146,50458.3%3
Aug 12, 2026111,0550143,75077.3%3
Aug 11, 202698,0570164,48859.6%3
Aug 10, 2026141,30610205,19068.9%3
Aug 7, 2026179,309201280,65863.9%3
Aug 6, 2026106,65166175,32260.8%3
Aug 5, 202695,60219171,77355.7%3
Aug 4, 2026176,6680277,48063.7%3
Aug 3, 2026146,03175317,58646.0%3
Jul 31, 2026140,9412226,47262.2%3
Jul 30, 2026276,667255441,55662.7%3
Jul 29, 2026212,88373335,11363.5%3
Jul 28, 2026154,96618197,86878.3%3
Jul 27, 202671,57779133,92253.4%3
Jul 24, 202666,8631,03085,60978.1%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.