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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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MRTN short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float6.1%57,661,000 float shares
Days to Cover4.9723,068 average daily volume
Open Short Position3,519,434Marten Transport, Ltd. Common
Change vs Previous+8,799+0.3%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20263,519,434+8,799+0.3%4.96.1%
Jul 15, 20263,510,635+257,369+7.9%6.26.1%
Jun 30, 20263,253,266+130,465+4.2%3.05.6%

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, 202645,763077,07059.4%2
Aug 20, 202653,1850105,74850.3%3
Aug 19, 2026108,0100146,04974.0%3
Aug 18, 202678,1320155,37350.3%3
Aug 17, 202679,3800174,32745.5%3
Aug 14, 202652,4910119,31744.0%2
Aug 13, 2026154,25680275,08256.1%3
Aug 12, 2026143,9000227,92363.1%3
Aug 11, 2026119,7630193,72861.8%2
Aug 10, 2026138,2530234,08159.1%3
Aug 7, 2026108,9860186,93258.3%2
Aug 6, 202693,4611147,55963.3%2
Aug 5, 2026100,7350233,12843.2%3
Aug 4, 2026122,6700325,07437.7%2
Aug 3, 2026122,8910265,76846.2%2
Jul 31, 2026137,4000224,86961.1%2
Jul 30, 2026176,6640253,52769.7%3
Jul 29, 2026192,056405309,88762.0%3
Jul 28, 2026119,8500218,82454.8%3
Jul 27, 2026127,61130356,17735.8%3
Jul 24, 2026164,5740308,95853.3%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.