13F

Stock

Tecogen Inc New

Ticker not mapped · held by 61 managers

Reported value

$19.5M

Holders

61

+12 new · −18 exited

Holders’ est. mark

−$12.7M

Price effect on 46 books still in the name

Largest holder

$1.97M

VANGUARD CAPITAL MANAGEMENT LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
VANGUARD CAPITAL MANAGEMENT LLC770K$1.97MHeld
BARD ASSOCIATES INC688.3K$1.76M−$1.64MCut−$1.64M
Clear Harbor Asset Management, LLC650K$1.66M−$1.45MCut−$1.35M
Portolan Capital Management, LLC443.6K$1.14M−$1.06MCut−$1.07M
HERALD INVESTMENT MANAGEMENT Ltd420K$1.08M−$1MCut−$1M
Arosa Capital Management LP350K$896K−$833KCut−$833K
Palisades Investment Partners, LLC333.9K$854.8K−$794.7KCut−$1.07M
UBS Group AG319.8K$818.8K−$249.8KAdded$300.3K
Meros Investment Management, LP291.7K$746.8KNew
Renaissance Technologies272.3K$697.1K−$129.2KAdded$428.8K
GENDELL JEFFREY L245.5K$628.6K−$584.4KCut−$831.4K
Integrated Wealth Concepts LLC218.4K$559.1KNew
MARSHALL WACE, LLP207.5K$531.1K−$493.8KCut−$883.3K
GEODE CAPITAL MANAGEMENT, LLC192K$491.8K−$423.7KCut−$387.6K
RAYMOND JAMES FINANCIAL INC185.8K$475.6K−$237.4KCut−$17.2K
BlackRock, Inc.184.8K$473K−$439.8KCut−$472.3K
Citadel147.5K$377.5K−$116.4KAdded$135.9K
NEW YORK STATE COMMON RETIREMENT FUND137.2K$351.2K−$326.5KCut−$326.5K
HighTower Advisors, LLC132.7K$339.6K−$315.7KCut−$315.7K
JANE STREET GROUP, LLC117.3K$300.4K−$279.3KCut−$725.2K
SUSQUEHANNA INTERNATIONAL GROUP, LLP109.5K$280.2K−$260.5KCut−$1.22M
THOMPSON DAVIS & CO., INC.99K$253.4K−$235.6KCut−$341.6K
VANGUARD FIDUCIARY TRUST CO96.4K$246.9KHeld
Granahan Investment Management, LLC88.5K$226.6K−$210.6KCut−$651.9K
GROUP ONE TRADING LLC83.9K$214.8K−$134.7KCut−$64.7K
Apis Capital Advisors, LLC77K$197.1KNew
MORGAN STANLEY76.7K$196.4K−$166.5KCut−$149.2K
State Street69.2K$177.2K−$164.8KCut−$164.8K
TWO SIGMA INVESTMENTS, LP67.4K$172.6K−$160.5KCut−$907.4K
PFG Investments, LLC62.5K$160.1K−$148.8KCut−$148.8K
CORSAIR CAPITAL MANAGEMENT, L.P.55K$140.8K−$130.9KCut−$130.9K
Diametric Capital, LP53.1K$136K−$126.5KCut−$126.9K
SIMPLEX TRADING, LLC41.3K$105.8K−$98.4KCut−$124.1K
LPL Financial LLC41.3K$105.6K−$98.2KCut−$258.9K
GAMCO INVESTORS, INC. ET AL40K$102.4K−$95.2KCut−$95.2K
NORTHERN TRUST CORP37.7K$96.5K−$89.7KCut−$89.7K
Jump Financial, LLC35.5K$90.9KNew
BRIDGEWAY CAPITAL MANAGEMENT, LLC33K$84.6K−$60.7KCut−$41.4K
GOLDMAN SACHS GROUP INC25.1K$64.3K−$59.8KCut−$270.3K
GABELLI FUNDS LLC20K$51.2KNew
Pathstone Holdings, LLC18.7K$47.9K−$44.6KCut−$44.6K
COMMONWEALTH EQUITY SERVICES, LLC16.1K$41.3K−$28KCut−$16.9K
IMC-Chicago, LLC13.7K$34.9K−$32.5KCut−$177.3K
DIMENSIONAL FUND ADVISORS LP11.2K$28.6KNew
Tower Research Capital LLC (TRC)10.2K$26.1KNew
CITIZENS FINANCIAL GROUP INC/RI10K$25.6KNew
Vanguard Global Advisers, LLC5.43K$13.9KHeld
ROYAL BANK OF CANADA3.14K$8K−$7.54KCut−$415K
EverSource Wealth Advisors, LLC2.5K$6.4K−$2.38KAdded$1.46K
Advisory Services Network, LLC2.49K$6.37KNew
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC1.58K$4.05KNew
Federation des caisses Desjardins du Quebec562$1.44K−$1.34KCut−$1.34K
NATIONAL BANK OF CANADA /FI/500$1.28K−$550Added$144
State of Wyoming494$1.26K−$1.18KCut−$1.39K
Fortitude Family Office, LLC181$463New
SBI Securities Co., Ltd.120$307−$279Cut−$271
GSA CAPITAL PARTNERS LLP94.2K$241−$46Added$145
MAI Capital Management64$164−$153Cut−$153
HARBOR CAPITAL ADVISORS, INC.40K$102−$96Cut−$98
SHIKIAR ASSET MANAGEMENT INC17.6K$45−$32Cut−$21
HRT FINANCIAL LP15.1K$38New

Who left

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.