TECOGEN INC. (TGEN) — Institutional Holders, Q2 2026
69 institutional investment managers reported a TGEN position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $49.5M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
TGEN in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Portolan Capital ManagementAdded · +1,107,558 sh+$5.8M
- GRATIA CAPITALNew · +388,660 sh+$2.0M
- MORGAN STANLEYAdded · +224,959 sh+$1.2M
- Huntleigh AdvisorsNew · +220,074 sh+$1.1M
- SUSQUEHANNA INTERNATIONAL GROUP, LLPAdded · +206,374 sh+$1.1M
Biggest sellers
- RENAISSANCE TECHNOLOGIESSold out · -272,300 sh-$1.4M
- Arosa Capital ManagementTrimmed · -225,000 sh-$1.2M
- GENDELL JEFFREY LTrimmed · -195,718 sh-$1.0M
- MARSHALL WACE, LLPTrimmed · -152,661 sh-$796.9K
- Integrated Wealth ConceptsTrimmed · -106,300 sh-$554.9K
TGEN 13F holders ranked 1–69 of 69
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Portolan Capital Management#1 · 1,551,113 sh | 1,551,113 | $8.1M | 0.30% | +249.7% |
| 2 | VANGUARD CAPITAL MANAGEMENT#2 · 788,670 sh | 788,670 | $4.1M | <0.01% | +2.4% |
| 3 | BARD ASSOCIATES#3 · 682,221 sh | 682,221 | $3.6M | 0.79% | -0.9% |
| 4 | Clear Harbor Asset Management#4 · 650,000 sh | 650,000 | $3.4M | 0.21% | 0.0% |
| 5 | Herald Investment Management Ltd#5 · 420,000 sh | 420,000 | $2.2M | — | 0.0% |
| 6 | GRATIA CAPITAL#6 · 388,660 sh | 388,660 | $2.0M | 1.23% | New |
| 7 | UBS Group AG#7 · 363,049 sh | 363,049 | $1.9M | <0.01% | +13.5% |
| 8 | Meros Investment Management#8 · 353,487 sh | 353,487 | $1.8M | 0.59% | +21.2% |
| 9 | Palisades Investment Partners#9 · 323,090 sh | 323,090 | $1.7M | 0.48% | -3.2% |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#10 · 315,831 sh | 315,831 | $1.6M | <0.01% | +188.5% |
| 11 | MORGAN STANLEY#11 · 301,695 sh | 301,695 | $1.6M | <0.01% | +293.2% |
| 12 | RAYMOND JAMES FINANCIAL#12 · 290,260 sh | 290,260 | $1.5M | <0.01% | +56.2% |
| 13 | BlackRock#13 · 251,464 sh | 251,464 | $1.3M | 0.00% | +36.1% |
| 14 | CITADEL ADVISORS#14 · 242,276 sh | 242,276 | $1.3M | <0.01% | +64.3% |
| 15 | Huntleigh Advisors#15 · 220,074 sh | 220,074 | $1.1M | 0.16% | New |
| 16 | HEARTLAND ADVISORS#16 · 182,100 sh | 182,100 | $950.6K | 0.04% | New |
| 17 | GEODE CAPITAL MANAGEMENT#17 · 180,870 sh | 180,870 | $944.8K | <0.01% | -5.8% |
| 18 | THOMPSON DAVIS#18 · 144,840 sh | 144,840 | $755.9K | 0.45% | +46.3% |
| 19 | NEW YORK STATE COMMON RETIREMENT FUND#19 · 137,200 sh | 137,200 | $716.2K | <0.01% | 0.0% |
| 20 | GSA CAPITAL PARTNERS LLP#20 · 126,451 sh | 126,451 | $660.0K | 0.04% | +34.3% |
| 21 | Arosa Capital Management#21 · 125,000 sh | 125,000 | $652.5K | 0.12% | -64.3% |
| 22 | Integrated Wealth Concepts#22 · 112,080 sh | 112,080 | $585.1K | <0.01% | -48.7% |
| 23 | APIS CAPITAL ADVISORS#23 · 112,000 sh | 112,000 | $584.6K | 0.06% | +45.5% |
| 24 | VANGUARD FIDUCIARY#24 · 105,956 sh | 105,956 | $553.1K | <0.01% | +9.9% |
| 25 | GOLDMAN SACHS GROUP#25 · 69,530 sh | 69,530 | $362.9K | 0.00% | +176.9% |
| 26 | STATE STREET#26 · 69,226 sh | 69,226 | $361.4K | 0.00% | 0.0% |
| 27 | Diametric Capital#27 · 66,326 sh | 66,326 | $346.2K | 0.04% | +24.8% |
| 28 | PFG Investments#28 · 62,523 sh | 62,523 | $326.4K | 0.01% | 0.0% |
| 29 | IMC-Chicago#29 · 61,800 sh | 61,800 | $322.6K | <0.01% | +352.7% |
| 30 | HRT FINANCIAL#30 · 59,285 sh | 59,285 | $309.0K | <0.01% | +293.4% |
| 31 | CORSAIR CAPITAL MANAGEMENT, L.P.#31 · 55,017 sh | 55,017 | $287.2K | 0.04% | 0.0% |
| 32 | MARSHALL WACE, LLP#32 · 54,806 sh | 54,806 | $286.1K | <0.01% | -73.6% |
| 33 | SHIKIAR ASSET MANAGEMENT#33 · 54,050 sh | 54,050 | $282.0K | — | +206.2% |
| 34 | GROUP ONE TRADING, L.P.#34 · 49,872 sh | 49,872 | $260.3K | <0.01% | -40.6% |
| 35 | GENDELL JEFFREY L#35 · 49,823 sh | 49,823 | $260.1K | <0.01% | -79.7% |
| 36 | JANE STREET GROUP#36 · 49,087 sh | 49,087 | $256.2K | 0.00% | -58.2% |
| 37 | GAMCO INVESTORS, ET AL#37 · 40,000 sh | 40,000 | $208.8K | <0.01% | 0.0% |
| 38 | HighTower Advisors#38 · 39,500 sh | 39,500 | $206.2K | <0.01% | -70.2% |
| 39 | NORTHERN#39 · 37,569 sh | 37,569 | $196.1K | 0.00% | -0.3% |
| 40 | BRIDGEWAY CAPITAL MANAGEMENT#40 · 33,048 sh | 33,048 | $172.5K | <0.01% | 0.0% |
| 41 | XTX Topco Ltd#41 · 32,411 sh | 32,411 | $169.2K | <0.01% | New |
| 42 | Centiva Capital#42 · 27,528 sh | 27,528 | $143.7K | <0.01% | New |
| 43 | Crewe Advisors#43 · 23,000 sh | 23,000 | $120.1K | <0.01% | New |
| 44 | GABELLI FUNDS#44 · 20,000 sh | 20,000 | $104.4K | <0.01% | 0.0% |
| 45 | LEUCADIA NATIONAL#45 · 19,300 sh | 19,300 | $100.7K | <0.01% | New |
| 46 | Pathstone#46 · 18,725 sh | 18,725 | $97.7K | <0.01% | 0.0% |
| 47 | Virtu Financial#47 · 16,377 sh | 16,377 | $85.0K | <0.01% | New |
| 48 | D. E. Shaw#48 · 15,339 sh | 15,339 | $80.1K | 0.00% | New |
| 49 | Belvedere Trading#49 · 15,206 sh | 15,206 | $79.4K | <0.01% | New |
| 50 | Quadrature Capital Ltd#50 · 14,061 sh | 14,061 | $73.4K | <0.01% | New |
| 51 | COMMONWEALTH EQUITY SERVICES#51 · 13,624 sh | 13,624 | $71.1K | <0.01% | -15.5% |
| 52 | Wealthspire Advisors#52 · 11,711 sh | 11,711 | $61.1K | <0.01% | New |
| 53 | DIMENSIONAL FUND ADVISORS#53 · 11,163 sh | 11,163 | $58.3K | 0.00% | 0.0% |
| 54 | CITIZENS FINANCIAL GROUP#54 · 10,000 sh | 10,000 | $52.2K | — | 0.0% |
| 55 | Vanguard Global Advisers#55 · 5,434 sh | 5,434 | $28.4K | 0.00% | 0.0% |
| 56 | Persistent Asset Partners Ltd#56 · 2,271 sh | 2,271 | $11.9K | <0.01% | New |
| 57 | CITIGROUP#57 · 1,602 sh | 1,602 | $8.4K | 0.00% | New |
| 58 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#58 · 1,583 sh | 1,583 | $8.3K | 0.00% | 0.0% |
| 59 | Federation des caisses Desjardins du Quebec#59 · 562 sh | 562 | $2.9K | 0.00% | 0.0% |
| 60 | SIMPLEX TRADING#60 · 479 sh | 479 | $2.5K | 0.00% | -98.8% |
| 61 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT#61 · 266 sh | 266 | $1.4K | 0.00% | New |
| 62 | ROYAL BANK OF CANADA#62 · 227 sh | 227 | $1.0K | 0.00% | -92.8% |
| 63 | Fortitude Family Office#63 · 181 sh | 181 | $945.00 | — | 0.0% |
| 64 | Bogart Wealth#64 · 118 sh | 118 | $616.00 | 0.00% | New |
| 65 | SBI Securities , Ltd.#65 · 110 sh | 110 | $574.00 | — | -8.3% |
| 66 | Bare Financial Services#66 · 103 sh | 103 | $538.00 | <0.01% | New |
| 67 | FMR#67 · 53 sh | 53 | $279.00 | 0.00% | New |
| 68 | HOLLENCREST SECURITIES#68 · 15 sh | 15 | $78.00 | 0.00% | New |
| 69 | Caitong International Asset Management , Ltd#69 · 1 sh | 1 | $5.00 | 0.00% | New |
Funds that sold out of TGEN in Q2 2026 (12)
Held TGEN at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| RENAISSANCE TECHNOLOGIES272,300 sh | 272,300 | $697.1K |
| Granahan Investment Management88,496 sh | 88,496 | $226.6K |
| TWO SIGMA INVESTMENTS67,418 sh | 67,418 | $172.6K |
| LPL Financial41,251 sh | 41,251 | $105.6K |
| HARBOR CAPITAL ADVISORS39,973 sh | 39,973 | $102.0K |
| Jump Financial35,500 sh | 35,500 | $90.9K |
| EverSource Wealth Advisors1,873 sh | 1,873 | $52.1K |
| Tower Research Capital (TRC)10,189 sh | 10,189 | $26.1K |
| Advisory Services Network2,490 sh | 2,490 | $6.4K |
| NATIONAL BANK OF CANADA500 sh | 500 | $1.3K |
| State of Wyoming494 sh | 494 | $1.3K |
| MAI Capital Management64 sh | 64 | $164.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.