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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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SPRO short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float3.3%46,204,100 float shares
Days to Cover1.02,524,691 average daily volume
Open Short Position1,513,354Spero Therapeutics, Inc. Commo
Change vs Previous-600,581-28.4%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20261,513,354-600,581-28.4%1.03.3%
Jul 15, 20262,113,935-750,915-26.2%1.34.6%
Jun 30, 20262,864,850+1,033,137+56.4%1.06.2%

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, 202634,4430152,89022.5%2
Aug 20, 2026103,1860274,56237.6%3
Aug 19, 202661,1370259,18823.6%3
Aug 18, 202634,6130222,24615.6%2
Aug 17, 202641,8070101,69341.1%2
Aug 14, 2026100,134300375,53626.7%2
Aug 13, 2026148,8940582,38825.6%3
Aug 12, 202677,3540233,96933.1%2
Aug 11, 202658,6210164,34335.7%2
Aug 10, 202643,6150177,54724.6%2
Aug 7, 202661,3400255,76224.0%3
Aug 6, 202680,3250321,39425.0%1
Aug 5, 202686,3450318,74427.1%2
Aug 4, 202676,4460461,00016.6%3
Aug 3, 2026189,2990857,98122.1%3
Jul 31, 2026169,0990560,70830.2%3
Jul 30, 202633,3330234,85314.2%3
Jul 29, 202679,7090566,92214.1%3
Jul 28, 2026137,4910770,50517.8%2
Jul 27, 202680,1450596,61613.4%2
Jul 24, 20261,099,928160,8524,828,13622.8%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.