CRBU short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31

Short % of Float11.4%102,484,000 float shares

Days to Cover9.41,235,028 average daily volume

Open Short Position11,639,454Caribou Biosciences, Inc. Comm

Change vs Previous+45,167+0.4%

Short interest history

Twice-monthly snapshots of open short positions.

Settlement	Short Position	Change	Change %	Days to Cover	Short % Float
Jul 31, 2026	11,639,454	+45,167	+0.4%	9.4	11.4%
Jul 15, 2026	11,594,287	+1,968,450	+20.4%	4.9	11.3%
Jun 30, 2026	9,625,837	+2,094,179	+27.8%	3.1	9.4%

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 Date	Short Volume	Short Exempt	FINRA Total	Short Volume %	Facilities
Aug 21, 2026	309,016	115,692	511,314	60.4%	2
Aug 20, 2026	279,510	929	401,577	69.6%	3
Aug 19, 2026	340,541	0	491,340	69.3%	2
Aug 18, 2026	153,585	4,850	287,152	53.5%	3
Aug 17, 2026	242,171	12,399	422,339	57.3%	2
Aug 14, 2026	228,543	13,642	602,836	37.9%	3
Aug 13, 2026	182,588	0	477,207	38.3%	3
Aug 12, 2026	137,910	16,549	307,691	44.8%	2
Aug 11, 2026	240,171	2,813	449,942	53.4%	2
Aug 10, 2026	131,549	0	322,541	40.8%	3
Aug 7, 2026	195,582	16	320,035	61.1%	3
Aug 6, 2026	232,560	56	350,687	66.3%	3
Aug 5, 2026	212,873	0	444,428	47.9%	3
Aug 4, 2026	395,522	0	660,179	59.9%	3
Aug 3, 2026	406,864	1,721	785,051	51.8%	3
Jul 31, 2026	291,858	0	483,013	60.4%	3
Jul 30, 2026	315,278	860	472,318	66.8%	3
Jul 29, 2026	347,949	2,764	529,410	65.7%	3
Jul 28, 2026	653,495	2,074	919,245	71.1%	3
Jul 27, 2026	163,665	708	300,799	54.4%	3
Jul 24, 2026	318,915	2,500	485,950	65.6%	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.