BCHT short positioning

Twice-monthly snapshots of open short positions.

Settlement 2026-07-31

Short % of Float0.5%19,785,500 float shares

Days to Cover1.470,730 average daily volume

Open Short Position97,780Birchtech Corp.

Change vs Previous-61,243-38.5%

Short interest history

Twice-monthly snapshots of open short positions.

Settlement	Short Position	Change	Change %	Days to Cover	Short % Float
Jul 31, 2026	97,780	-61,243	-38.5%	1.4	0.5%
Jul 15, 2026	159,023	+25,565	+19.2%	2.8	0.8%
Jun 30, 2026	133,458	+117,785	+751.5%	1.0	0.7%

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	7,841	0	38,960	20.1%	2
Aug 20, 2026	2,030	0	10,444	19.4%	1
Aug 19, 2026	4,332	0	25,383	17.1%	1
Aug 18, 2026	21,210	0	49,962	42.5%	3
Aug 17, 2026	5,674	237	13,105	43.3%	2
Aug 14, 2026	14,604	1,945	60,967	24.0%	2
Aug 13, 2026	8,084	0	18,664	43.3%	2
Aug 12, 2026	13,162	0	126,750	10.4%	2
Aug 11, 2026	2,920	0	49,868	5.9%	1
Aug 10, 2026	6,184	0	23,293	26.5%	1
Aug 7, 2026	8,147	0	58,388	14.0%	3
Aug 6, 2026	19,682	0	46,433	42.4%	2
Aug 5, 2026	16,120	0	20,939	77.0%	1
Aug 4, 2026	8,767	0	40,164	21.8%	1
Aug 3, 2026	12,132	1,200	32,079	37.8%	1
Jul 31, 2026	6,570	0	40,753	16.1%	2
Jul 30, 2026	4,336	0	75,463	5.7%	2
Jul 29, 2026	3,254	0	20,035	16.2%	2
Jul 28, 2026	2,203	0	21,929	10.0%	2
Jul 27, 2026	2,638	0	10,778	24.5%	1

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