13F

Stock

Birchtech Corp.

BCHT · held by 23 managers

Reported value

$6.08M

Holders

23

+21 new · −0 exited

Holders’ est. mark

−$136.2K

Price effect on 2 books still in the name

Largest holder

$1.9M

HEARTLAND ADVISORS INC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
HEARTLAND ADVISORS INC1M$1.9MNew
CHAPIN DAVIS, INC.686.7K$1.3MNew
Ancora Advisors LLC428.7K$814.5K−$97.8KAdded$616.2K
Aristides Capital LLC425K$807.5KNew
WHITE PINE CAPITAL LLC289.2K$549.4KNew
Sigma Planning Corp52.4K$99.6KNew
ARS Investment Partners, LLC51.1K$97.1KNew
Citadel51K$96.9KNew
Focus Partners Wealth42.7K$81.1KNew
Diametric Capital, LP41.7K$77.8KNew
Mink Brook Asset Management LLC30K$57K−$38.4KCut−$89.9K
GTS SECURITIES LLC25.2K$47.9KNew
Crewe Advisors LLC16.6K$31.5KNew
WATERS PARKERSON & CO., LLC13K$24.7KNew
CIBC WORLD MARKET INC.10.6K$20.2KNew
PRELUDE CAPITAL MANAGEMENT, LLC10.4K$19.7KNew
Smartleaf Asset Management LLC9.09K$17KNew
UBS Group AG7.31K$13.9KNew
NATIONAL BANK OF CANADA /FI/4.8K$10.4KNew
MORGAN STANLEY2.5K$4.75KNew
HRT FINANCIAL LP33.9K$64New
Caitong International Asset Management Co., Ltd9$17New
HUNTINGTON NATIONAL BANK1$2New

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.