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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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MTZ short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float7.2%61,890,000 float shares
Days to Cover2.71,655,109 average daily volume
Open Short Position4,427,169MasTec, Inc.
Change vs Previous+190,728+4.5%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20264,427,169+190,728+4.5%2.77.2%
Jul 15, 20264,236,441-167,887-3.8%4.36.8%
Jun 30, 20264,404,328+722,325+19.6%3.27.1%

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, 2026339,346136568,68759.7%3
Aug 20, 2026307,2001554,58155.4%3
Aug 19, 2026300,82726815,92236.9%3
Aug 18, 2026348,4700532,17765.5%3
Aug 17, 2026542,57437726,83974.6%3
Aug 14, 2026603,4780780,44977.3%3
Aug 13, 2026618,296423841,16273.5%3
Aug 12, 2026507,7691671,34475.6%3
Aug 11, 2026397,335612498,49879.7%3
Aug 10, 2026377,0947559,19367.4%3
Aug 7, 2026416,7360684,66960.9%3
Aug 6, 2026257,922165373,15669.1%3
Aug 5, 2026299,9962463,53564.7%3
Aug 4, 2026438,8220678,09564.7%3
Aug 3, 2026529,35316,660985,48653.7%3
Jul 31, 2026785,60333,3311,607,39248.9%3
Jul 30, 2026612,40481,103,65855.5%3
Jul 29, 2026244,5532,774605,86440.4%3
Jul 28, 2026287,97365570,20450.5%3
Jul 27, 2026231,035157647,04935.7%3
Jul 24, 2026177,5730326,22454.4%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.