23 institutions reported holding $6.1M of BIRCHTECH CORP (BCHT) in SEC 13F filings for 2026-03-31. Largest institutional holders: HEARTLAND ADVISORS INC ($1.9M), CHAPIN DAVIS, INC. ($1.3M), Ancora Advisors LLC ($814,503), Aristides Capital LLC ($807,500), WHITE PINE CAPITAL LLC ($549,429). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | HEARTLAND ADVISORS INC | $1.9M | 1.0M | New |
| 2 | CHAPIN DAVIS, INC. | $1.3M | 686,693 | New |
| 3 | Ancora Advisors LLC | $814,503 | 428,686 | Added |
| 4 | Aristides Capital LLC | $807,500 | 425,000 | New |
| 5 | WHITE PINE CAPITAL LLC | $549,429 | 289,173 | New |
| 6 | Sigma Planning Corp | $99,583 | 52,412 | New |
| 7 | ARS Investment Partners, LLC | $97,090 | 51,100 | New |
| 8 | CITADEL ADVISORS LLC | $96,889 | 50,994 | New |
| 9 | Focus Partners Wealth | $81,130 | 42,700 | New |
| 10 | Diametric Capital, LP | $77,776 | 41,685 | New |
| 11 | HRT FINANCIAL LP | $64,000 | 33,855 | New |
| 12 | Mink Brook Asset Management LLC | $57,000 | 30,000 | Trimmed |
| 13 | GTS SECURITIES LLC | $47,943 | 25,233 | New |
| 14 | Crewe Advisors LLC | $31,540 | 16,600 | New |
| 15 | WATERS PARKERSON & CO., LLC | $24,700 | 13,000 | New |
| 16 | CIBC WORLD MARKET INC. | $20,153 | 10,607 | New |
| 17 | PRELUDE CAPITAL MANAGEMENT, LLC | $19,716 | 10,377 | New |
| 18 | Smartleaf Asset Management LLC | $17,000 | 9,091 | New |
| 19 | UBS Group AG | $13,881 | 7,306 | New |
| 20 | NATIONAL BANK OF CANADA /FI/ | $10,449 | 4,799 | New |
| 21 | MORGAN STANLEY | $4,750 | 2,500 | New |
| 22 | Caitong International Asset Management Co., Ltd | $17 | 9 | New |
| 23 | HUNTINGTON NATIONAL BANK | $2 | 1 | New |
Source: SEC Form 13F filings · as of 2026-03-31