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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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NSSC short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float8.8%34,375,100 float shares
Days to Cover11.7260,027 average daily volume
Open Short Position3,032,819NAPCO Security Technologies, I
Change vs Previous-395,640-11.5%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20263,032,819-395,640-11.5%11.78.8%
Jul 15, 20263,428,459+109,623+3.3%10.310.0%
Jun 30, 20263,318,836+461,840+16.2%5.49.7%

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, 202683,4260124,82466.8%3
Aug 20, 202662,3700102,10861.1%3
Aug 19, 202643,1583274,42458.0%2
Aug 18, 202683,8300107,94077.7%3
Aug 17, 202653,444082,10565.1%3
Aug 14, 202639,098067,71157.7%3
Aug 13, 202639,229066,79958.7%2
Aug 12, 202643,619099,55643.8%3
Aug 11, 202659,210094,96762.3%2
Aug 10, 202640,541068,94358.8%3
Aug 7, 202648,663085,17057.1%3
Aug 6, 202660,825080,70375.4%3
Aug 5, 202673,9730102,06972.5%3
Aug 4, 202667,2500116,27357.8%3
Aug 3, 202642,986087,83548.9%3
Jul 31, 202644,362076,41058.1%3
Jul 30, 202664,3810104,69661.5%3
Jul 29, 202669,277366132,41252.3%2
Jul 28, 202650,760086,37058.8%3
Jul 27, 202636,816078,03347.2%3
Jul 24, 202634,39513973,80546.6%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.