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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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MPC short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float2.4%279,811,000 float shares
Days to Cover3.42,006,212 average daily volume
Open Short Position6,786,536MARATHON PETROLEUM CORPORATION
Change vs Previous+374,281+5.8%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20266,786,536+374,281+5.8%3.42.4%
Jul 15, 20266,412,255-878,609-12.1%3.22.3%
Jun 30, 20267,290,864-382,904-5.0%2.62.6%

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, 2026389,5691,582704,51555.3%3
Aug 20, 2026588,9992,3161,122,26252.5%3
Aug 19, 2026378,86326764,47949.6%3
Aug 18, 2026389,288249706,51155.1%3
Aug 17, 2026442,8201,215955,75046.3%3
Aug 14, 2026379,8191,011746,56650.9%3
Aug 13, 2026550,0211,384887,05962.0%3
Aug 12, 2026520,26888890,25958.4%3
Aug 11, 2026593,694160996,76959.6%3
Aug 10, 2026477,0922797,10059.9%3
Aug 7, 2026298,40719635,77446.9%3
Aug 6, 2026442,144409705,18962.7%3
Aug 5, 2026573,5997431,068,53953.7%3
Aug 4, 2026635,0828551,171,24054.2%3
Aug 3, 2026542,0071,744891,25160.8%3
Jul 31, 2026307,2601,457581,26052.9%3
Jul 30, 2026463,789406785,40059.1%3
Jul 29, 2026431,1301,590712,07860.5%3
Jul 28, 2026371,36093710,64052.3%3
Jul 27, 2026455,7571,487757,71460.1%3
Jul 24, 2026397,67170854,21146.6%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.