Who Owns TECOGEN INC (TGEN)? -- Institutional Holders (2026-06-30)

81 institutions reported holding $58.9M of TECOGEN INC (TGEN) in SEC 13F filings for 2026-06-30. Largest institutional holders: Portolan Capital Management, LLC ($8.1M), VANGUARD GROUP INC ($4.7M), BARD ASSOCIATES INC ($3.6M), Clear Harbor Asset Management, LLC ($3.4M), CITADEL ADVISORS LLC ($3.1M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1Portolan Capital Management, LLC$8.1M1.6MAdded
2VANGUARD GROUP INC$4.7M900,060Added
3BARD ASSOCIATES INC$3.6M682,221Trimmed
4Clear Harbor Asset Management, LLC$3.4M650,000Hold
5CITADEL ADVISORS LLC$3.1M585,576Added
6SUSQUEHANNA INTERNATIONAL GROUP, LLP$2.8M535,631Added
7PEAK6 LLC$2.5M471,900New
8JANE STREET GROUP, LLC$2.3M434,287Added
9Herald Investment Management Ltd$2.2M420,000Hold
10GRATIA CAPITAL, LLC$2.0M388,660New
11UBS Group AG$1.9M363,049Added
12Meros Investment Management, LP$1.8M353,487Added
13Palisades Investment Partners, LLC$1.7M323,090Trimmed
14MORGAN STANLEY$1.6M301,695Added
15RAYMOND JAMES FINANCIAL INC$1.5M290,260Added
16BlackRock, Inc.$1.3M251,464Added
17IMC-Chicago, LLC$1.2M238,600Added
18Huntleigh Advisors, Inc.$1.1M220,074New
19HEARTLAND ADVISORS INC$950,562182,100New
20GEODE CAPITAL MANAGEMENT, LLC$944,802180,870Trimmed
21GROUP ONE TRADING LLC$856,456164,072Added
22THOMPSON DAVIS & CO., INC.$755,856144,840Added
23NEW YORK STATE COMMON RETIREMENT FUND$716,184137,200Hold
24GSA CAPITAL PARTNERS LLP$660,000126,451Added
25Arosa Capital Management LP$652,500125,000Trimmed

Source: SEC Form 13F filings · as of 2026-06-30