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Stockfacts

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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FAST short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float3.1%1,144,939,000 float shares
Days to Cover4.38,315,588 average daily volume
Open Short Position35,899,233Fastenal Company Common Stock
Change vs Previous+4,423,331+14.1%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202635,899,233+4,423,331+14.1%4.33.1%
Jul 15, 202631,475,902+570,340+1.9%3.42.7%
Jun 30, 202630,905,562-414,990-1.3%3.82.7%

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, 2026691,7548551,434,95048.2%3
Aug 20, 2026838,9077,5951,604,79352.3%3
Aug 19, 20261,068,7691,5301,611,48266.3%3
Aug 18, 2026958,1357231,457,81565.7%3
Aug 17, 20261,047,5932,9661,831,78857.2%3
Aug 14, 20261,236,3303011,611,11576.7%3
Aug 13, 20261,489,5807042,074,54971.8%3
Aug 12, 20261,101,4214,2041,482,92674.3%3
Aug 11, 20261,488,0551,0902,595,35357.3%3
Aug 10, 20261,615,1267,9392,367,13368.2%3
Aug 7, 20262,138,29091,4493,257,31765.6%3
Aug 6, 20261,473,79132,8882,640,67955.8%3
Aug 5, 20261,370,34710,6832,276,32860.2%3
Aug 4, 20261,735,06618,2162,403,61072.2%3
Aug 3, 20261,607,0911,3012,348,17968.4%3
Jul 31, 20261,202,1443062,938,61540.9%3
Jul 30, 20261,919,7241172,389,48880.3%3
Jul 29, 20261,976,7521,8193,106,37863.6%3
Jul 28, 20261,920,1459,1092,662,53172.1%3
Jul 27, 20261,246,2822162,010,91862.0%3
Jul 24, 2026997,5372,0361,526,23165.4%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.