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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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ATEC short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float11.3%122,180,000 float shares
Days to Cover7.31,901,128 average daily volume
Open Short Position13,788,007Alphatec Holdings, Inc. Common
Change vs Previous+39,787+0.3%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 202613,788,007+39,787+0.3%7.311.3%
Jul 15, 202613,748,220-868,309-5.9%5.711.3%
Jun 30, 202614,616,529+2,258,111+18.3%3.612.0%

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, 2026344,2630498,18669.1%3
Aug 20, 2026452,7751,000586,18277.2%3
Aug 19, 2026363,1640501,33272.4%3
Aug 18, 2026333,19711521,23763.9%3
Aug 17, 2026480,985400611,35778.7%3
Aug 14, 2026368,5665,755524,96070.2%3
Aug 13, 2026240,224170472,90950.8%3
Aug 12, 2026378,03244578,99865.3%3
Aug 11, 2026275,6270489,31556.3%3
Aug 10, 2026501,1326,640701,62771.4%3
Aug 7, 2026692,0241,250894,57477.4%3
Aug 6, 2026553,2246,9641,225,85545.1%3
Aug 5, 2026722,6409,8821,681,19843.0%3
Aug 4, 2026827,1956101,932,96542.8%2
Aug 3, 2026645,80996,5002,047,05031.5%3
Jul 31, 2026296,4440661,13244.8%3
Jul 30, 2026529,3604,698750,85970.5%3
Jul 29, 2026617,0532,171917,16367.3%3
Jul 28, 2026444,5521,562803,16355.4%3
Jul 27, 2026360,6110650,47855.4%3
Jul 24, 2026302,3970466,24764.9%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.