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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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MBIO short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float1.0%5,346,900 float shares
Days to Cover1.928,731 average daily volume
Open Short Position55,145Mustang Bio, Inc. Common Stock
Change vs Previous-5,722-9.4%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202655,145-5,722-9.4%1.91.0%
Jul 15, 202660,867-41,573-40.6%1.51.1%
Jun 30, 2026102,440-48,187-32.0%2.11.9%

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, 20262,16904,84044.8%1
Aug 20, 202674903,00524.9%2
Aug 19, 20262,24306,59334.0%2
Aug 18, 20261,45305,48526.5%1
Aug 17, 20263,79805,36770.8%2
Aug 14, 20263,36309,92133.9%1
Aug 13, 202610,805123,24846.5%1
Aug 12, 20268,54850023,52436.3%1
Aug 11, 20264,190013,01032.2%3
Aug 10, 20261,095017,7906.2%2
Aug 7, 20262,03336849,8334.1%2
Aug 6, 20262,524487,85132.1%2
Aug 5, 20262,65405,61647.3%2
Aug 4, 20265,412017,29831.3%2
Aug 3, 20261,411054,2292.6%2
Jul 31, 20262,73805,92546.2%2
Jul 30, 202643310111,2703.8%2
Jul 29, 20269,848049,52419.9%3
Jul 28, 202613,397039,72033.7%2
Jul 27, 202620302,4838.2%2
Jul 24, 20261,4181112,05411.8%1

Daily short volume is transaction flow reported through FINRA facilities. It does not measure open short positions and is not consolidated exchange-wide volume.