BirchtechBCHT
13F holders, Q3 2025 (September 30)2holders +1
1new positions
0sold out
$0.72avg. 13F price*
At the end of Q3 2025, 2 institutions reported holding Birchtech Corp. (BCHT) in their 13F filings, up 1 from Q2 2025. 1 opened new positions and 0 sold out. The largest holders were Mink Brook Asset Management LLC ($95K) and FNY Investment Advisers, LLC ($59K).
- Company
- Birchtech Corp.
- CUSIP
- 59833H101
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $59K |
| Exits | 0 | $0 |
All 13F filers, Q2 2025 → Q3 2025: 81,600 shares bought, net +81,600 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 2 holders
| Mink Brook Asset Management LLC | 0.06% | No change | 131,000 | $95K |
| FNY Investment Advisers, LLC | 0.02% | New | 81,600 | $59K |
"% of holder's portfolio" is BCHT's weight in each manager's 13F, not the share of Birchtech Corp. the manager owns.