BLDP short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31

Short % of Float6.1%270,267,000 float shares

Days to Cover2.27,656,436 average daily volume

Open Short Position16,558,574Ballard Power Systems, Inc. Co

Change vs Previous-9,203,578-35.7%

Short interest history

Twice-monthly snapshots of open short positions.

Settlement	Short Position	Change	Change %	Days to Cover	Short % Float
Jul 31, 2026	16,558,574	-9,203,578	-35.7%	2.2	6.1%
Jul 15, 2026	25,762,152	+1,078,367	+4.4%	4.9	9.5%
Jun 30, 2026	24,683,785	+2,857,715	+13.1%	3.4	9.1%

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 Date	Short Volume	Short Exempt	FINRA Total	Short Volume %	Facilities
Aug 21, 2026	359,084	455	822,803	43.6%	3
Aug 20, 2026	721,763	2,706	1,370,608	52.7%	3
Aug 19, 2026	696,805	2,588	1,158,541	60.1%	3
Aug 18, 2026	557,223	1,022	1,165,214	47.8%	3
Aug 17, 2026	854,830	0	1,610,741	53.1%	3
Aug 14, 2026	724,049	0	1,337,940	54.1%	3
Aug 13, 2026	517,029	0	928,055	55.7%	3
Aug 12, 2026	762,601	667	1,442,581	52.9%	3
Aug 11, 2026	545,984	5	914,076	59.7%	3
Aug 10, 2026	871,104	1,370	1,422,856	61.2%	3
Aug 7, 2026	555,988	9,066	1,210,635	45.9%	3
Aug 6, 2026	780,443	600	1,368,476	57.0%	3
Aug 5, 2026	949,507	3,500	1,663,039	57.1%	3
Aug 4, 2026	756,624	57,110	1,483,242	51.0%	3
Aug 3, 2026	928,782	7,162	1,514,441	61.3%	3
Jul 31, 2026	1,360,512	1,969	2,052,851	66.3%	3
Jul 30, 2026	1,256,293	105	2,170,042	57.9%	3
Jul 29, 2026	1,513,614	0	2,110,751	71.7%	3
Jul 28, 2026	1,638,076	300	2,510,205	65.3%	3
Jul 27, 2026	2,398,732	1,850	2,961,449	81.0%	3
Jul 24, 2026	1,649,475	11,553	2,994,966	55.1%	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.