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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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CCCC short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float29.9%101,715,000 float shares
Days to Cover11.12,735,917 average daily volume
Open Short Position30,427,514C4 Therapeutics, Inc. Common S
Change vs Previous+6,612,504+27.8%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202630,427,514+6,612,504+27.8%11.129.9%
Jul 15, 202623,815,010-1,182,165-4.7%6.723.4%
Jun 30, 202624,997,175+2,750,867+12.4%5.324.6%

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, 2026233,2220508,14845.9%3
Aug 20, 2026556,1867001,063,75052.3%3
Aug 19, 2026631,0251,0001,224,83151.5%2
Aug 18, 2026388,15701,052,23436.9%2
Aug 17, 2026607,10925972,88762.4%2
Aug 14, 2026624,0472,4101,341,81846.5%3
Aug 13, 2026872,85312,6281,632,66153.5%3
Aug 12, 2026465,2562,956776,54459.9%3
Aug 11, 2026906,31701,520,60459.6%3
Aug 10, 2026332,3172,809784,04542.4%2
Aug 7, 2026395,8820670,58859.0%3
Aug 6, 2026441,7750613,78172.0%2
Aug 5, 2026641,06001,007,67663.6%3
Aug 4, 2026819,67801,263,44664.9%3
Aug 3, 2026552,0698,688862,03864.0%3
Jul 31, 2026486,180400677,03871.8%3
Jul 30, 2026335,589200596,79656.2%3
Jul 29, 2026475,09620736,04664.5%3
Jul 28, 2026604,1005001,057,67657.1%3
Jul 27, 20261,383,80012,239,83861.8%3
Jul 24, 2026310,02336,4511,183,90526.2%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.