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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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NTRA short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float3.1%139,911,000 float shares
Days to Cover4.7931,729 average daily volume
Open Short Position4,365,205Natera, Inc. Common Stock
Change vs Previous-599,441-12.1%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 20264,365,205-599,441-12.1%4.73.1%
Jul 15, 20264,964,646-855,970-14.7%3.63.5%
Jun 30, 20265,820,616+1,505,613+34.9%2.84.2%

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, 2026270,9871491,09255.2%3
Aug 20, 2026334,3491834,85040.0%3
Aug 19, 2026432,5240849,96750.9%3
Aug 18, 2026278,869130471,87759.1%3
Aug 17, 2026313,705417540,38158.1%3
Aug 14, 2026402,2802,619733,00054.9%3
Aug 13, 2026394,205366788,19250.0%3
Aug 12, 2026149,6806367,01540.8%3
Aug 11, 2026187,94312398,90547.1%3
Aug 10, 2026521,6043,4231,321,06739.5%3
Aug 7, 2026657,45122,1371,810,28136.3%3
Aug 6, 2026255,3413,970638,31740.0%3
Aug 5, 2026223,967292539,54141.5%3
Aug 4, 2026478,82842947,72550.5%3
Aug 3, 2026235,5851,762586,18740.2%3
Jul 31, 2026271,8860641,31142.4%3
Jul 30, 2026233,097430552,76642.2%3
Jul 29, 2026160,916139454,15835.4%3
Jul 28, 2026193,0192,569398,77648.4%3
Jul 27, 2026204,9781,002389,24252.7%3
Jul 24, 2026139,2478323,33043.1%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.