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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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NCNA short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31
Short % of Float3.5%4,161,600 float shares
Days to Cover5.029,217 average daily volume
Open Short Position146,276NuCana plc American Depositary
Change vs Previous-28,399-16.3%

Short interest history

Twice-monthly snapshots of open short positions.

SettlementShort PositionChangeChange %Days to CoverShort % Float
Jul 31, 2026146,276-28,399-16.3%5.03.5%
Jul 15, 2026174,675+58,909+50.9%1.94.2%
Jun 30, 2026115,766-14,880-11.4%2.92.8%

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, 20262,151310,92119.7%2
Aug 20, 20262,59209,05128.6%2
Aug 19, 202610,305019,10154.0%3
Aug 18, 20266,228013,81345.1%2
Aug 17, 202616,1902,68223,38769.2%3
Aug 14, 202634,0446,06148,12370.7%2
Aug 13, 20266,50209,96165.3%2
Aug 12, 20264,6951,30310,52044.6%2
Aug 11, 202612,5304,50119,99562.7%2
Aug 10, 20264,3283,0898,06153.7%1
Aug 7, 202645,9678,868110,73941.5%3
Aug 6, 20263,77405,66066.7%1
Aug 5, 20261,411012,27411.5%2
Aug 4, 20262,71104,52759.9%2
Aug 3, 20268,971018,39548.8%2
Jul 31, 20267,085814,88647.6%1
Jul 30, 20261,34004,09132.8%1
Jul 29, 20263,0835009,40732.8%2
Jul 28, 20261,88707,25426.0%2
Jul 27, 20262,749011,14924.7%2
Jul 24, 202635602,65113.4%2

Daily short volume is transaction flow reported through FINRA facilities. It does not measure open short positions and is not consolidated exchange-wide volume.