Tecogen Inc.
TGEN- Exchange
- NYSE
- Industry
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip
- SEC CIK
- 0001537435
No open-market purchases or sales by Tecogen Inc. insiders were filed in the last 90 days; 69 institutions reported holding it in 13F filings for Q2 2026, worth $49.5M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Tecogen Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 65
- −4 vs. Q3 2025
- Shares held
- 7.62M
- −91.0K (−1.2%) vs. Q3 2025
- Total value
- $37.6M
- −$30.2M (−44.5%) vs. Q3 2025
- New holders
- 15
- 23 more added
- Sold out
- 19
- 16 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TGEN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 69 | $49.5M |
| Q1 2026 | 62 | $19.9M |
| Q4 2025 | 65 | $37.6M |
| Q3 2025 | 70 | $68.0M |
| Q2 2025 | 30 | $26.4M |
| Q1 2025 | 1 | $28.0K |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 1 | $260.1K |
| Q3 2023 | 1 | $272.9K |
| Q2 2023 | 1 | $320.9K |
| Q1 2023 | 1 | $381.3K |
| Q4 2022 | 1 | $401.0K |
| Q3 2022 | 1 | $304.0K |
| Q2 2022 | 1 | $362.0K |
| Q1 2022 | 1 | $529.0K |
| Q4 2021 | 2 | $397.0K |
| Q3 2021 | 1 | $581.0K |
| Q2 2021 | 1 | $600.0K |
| Q1 2021 | 1 | $545.0K |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Tecogen Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 871,840 | $4.31M | 0.00% | +1,400+0.2% | Added |
| Bard Associates Inc | 689,107 | $3.40M | 0.87% | −1,504−0.2% | Reduced |
| Clear Harbor Asset Management, LLC | 610,000 | $3.01M | 0.21% | −1,600−0.3% | Reduced |
| Portolan Capital Management, LLC | 445,810 | $2.20M | 0.12% | −149,996−25.2% | Reduced |
| Herald Investment Management Ltd | 420,000 | $2.08M | 0.27% | −26,078−5.8% | Reduced |
| Palisades Investment Partners, LLC | 390,212 | $1.93M | 0.73% | +13,618+3.6% | Added |
| Arosa Capital Management LP | 350,000 | $1.73M | 1.11% | +62,500+21.7% | Added |
| Susquehanna International Group, LLP | 302,911 | $1.50M | 0.00% | +50,876+20.2% | Added |
| Gendell Jeffrey L | 295,541 | $1.46M | 0.03% | +51,919+21.3% | Added |
| Marshall Wace, LLP | 286,325 | $1.41M | 0.00% | +237,236+483.3% | Added |
| Two Sigma Investments, LP | 218,628 | $1.08M | 0.00% | −28,077−11.4% | Reduced |
| Jane Street Group, LLC | 207,607 | $1.03M | 0.00% | +114,497+123.0% | Added |
| BlackRock, Inc. | 191,360 | $945.3K | 0.00% | +6,581+3.6% | Added |
| Geode Capital Management, LLC | 177,914 | $879.5K | 0.00% | +11,357+6.8% | Added |
| Granahan Investment Management Inc | 177,822 | $878.4K | 0.04% | +65,484+58.3% | Added |
| New York State Common Retirement Fund | 137,200 | $677.8K | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 132,665 | $655.4K | 0.00% | +69,598+110.4% | Added |
| Thompson Davis & Co., Inc. | 120,450 | $595.0K | 0.36% | +2,497+2.1% | Added |
| UBS Group AG | 104,959 | $518.5K | 0.00% | +95,371+994.7% | Added |
| Raymond James Financial Inc | 99,754 | $492.8K | 0.00% | −58,134−36.8% | Reduced |
| Royal Bank of Canada | 85,545 | $423.0K | 0.00% | −36,844−30.1% | Reduced |
| Point72 Asset Management, L.P. | 83,907 | $414.5K | 0.00% | +83,907 | New |
| LPL Financial LLC | 73,793 | $364.5K | 0.00% | +73,793 | New |
| Morgan Stanley | 69,978 | $345.7K | 0.00% | +47,593+212.6% | Added |
| State Street Corp | 69,226 | $342.0K | 0.00% | −500−0.7% | Reduced |
| Goldman Sachs Group Inc | 67,724 | $334.6K | 0.00% | −65,038−49.0% | Reduced |
| PFG Investments, LLC | 62,523 | $308.9K | 0.01% | 00.0% | Unchanged |
| Mangrove Partners | 61,207 | $302.4K | 0.02% | +61,207 | New |
| Group One Trading, L.P. | 56,578 | $279.5K | 0.01% | +22,626+66.6% | Added |
| Corsair Capital Management, L.P. | 55,017 | $271.8K | 0.04% | +170.0% | Added |
| XTX Topco Ltd | 54,763 | $270.5K | 0.01% | +54,763 | New |
| Renaissance Technologies LLC | 54,300 | $268.2K | 0.00% | −47,900−46.9% | Reduced |
| Diametric Capital, LP | 53,227 | $262.9K | 0.07% | +22,486+73.1% | Added |
| Citadel Advisors LLC | 48,920 | $241.7K | 0.00% | −164,788−77.1% | Reduced |
| Simplex Trading, LLC | 46,531 | $229.9K | 0.01% | +14,969+47.4% | Added |
| IMC-Chicago, LLC | 42,955 | $212.2K | 0.00% | +42,955 | New |
| Omers Administration Corp | 42,000 | $207.5K | 0.00% | +42,000 | New |
| Harbor Capital Advisors, Inc. | 40,447 | $200.0K | 0.02% | +12,966+47.2% | Added |
| Gamco Investors, Inc. Et Al | 40,000 | $197.6K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 37,681 | $186.1K | 0.00% | +11,944+46.4% | Added |
| J.W. Cole Advisors, Inc. | 26,300 | $129.9K | 0.00% | −5,100−16.2% | Reduced |
| Bridgeway Capital Management, LLC | 25,500 | $126.0K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 22,820 | $112.7K | 0.00% | +22,820 | New |
| Millennium Management LLC | 22,507 | $111.2K | 0.00% | −25,738−53.3% | Reduced |
| Hidden Cove Wealth Management, LLC | 21,087 | $104.2K | 0.07% | +7,045+50.2% | Added |
| Gsa Capital Partners LLP | 19,432 | $96.0K | 0.01% | +19,432 | New |
| Pathstone Holdings, LLC | 18,725 | $92.5K | 0.00% | 00.0% | Unchanged |
| Ark Wealth Advisors LLC | 14,881 | $73.5K | 0.08% | +14,881 | New |
| Shikiar Asset Management Inc | 13,300 | $66.0K | 0.02% | −5,200−28.1% | Reduced |
| Charles Schwab Investment Management Inc | 12,000 | $59.3K | 0.00% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 11,774 | $58.2K | 0.00% | +11,774 | New |
| Lighthouse Investment Partners, LLC | 10,920 | $53.9K | 0.00% | +10,920 | New |
| Bank of America Corp | 10,784 | $53.3K | 0.00% | +5,948+123.0% | Added |
| Citigroup Inc | 8,535 | $42.2K | 0.00% | +8,535 | New |
| EverSource Wealth Advisors, LLC | 1,000 | $4.94K | 0.00% | −1,000−50.0% | Reduced |
| Federation des caisses Desjardins du Quebec | 562 | $2.78K | 0.00% | +562 | New |
| State of Wyoming | 538 | $2.66K | 0.00% | +448+497.8% | Added |
| Advisor Group Holdings, Inc. | 500 | $2.47K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 450 | $2.22K | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 230 | $1.14K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 214 | $1.06K | 0.00% | +214 | New |
| SBI Securities Co., Ltd. | 117 | $578 | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 88 | $435 | 0.00% | −10,212−99.1% | Reduced |
| MAI Capital Management | 64 | $317 | 0.00% | 00.0% | Unchanged |
| Laurel Wealth Advisors LLC | 45 | $223 | 0.00% | +45 | New |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −216,465−100.0% | Sold out |
| Apis Capital Advisors, LLC | 0 | $0 | 0.00% | −153,000−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −94,696−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −74,101−100.0% | Sold out |
| Manatuck Hill Partners, LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| ARS Investment Partners, LLC | 0 | $0 | 0.00% | −43,173−100.0% | Sold out |
| Heron Bay Capital Management | 0 | $0 | 0.00% | −37,167−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −36,200−100.0% | Sold out |
| Evernest Financial Advisors, LLC | 0 | $0 | 0.00% | −34,150−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −20,036−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −15,234−100.0% | Sold out |
| Gordian Capital Singapore Pte Ltd | 0 | $0 | 0.00% | −14,700−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −14,700−100.0% | Sold out |
| Rockefeller Capital Management L.P. | 0 | $0 | 0.00% | −12,500−100.0% | Sold out |
| Calamos Advisors LLC | 0 | $0 | 0.00% | −12,479−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| CoreCap Advisors, LLC | 0 | $0 | 0.00% | −4,944−100.0% | Sold out |
| Altshuler Shaham Ltd | 0 | $0 | 0.00% | −1,500−100.0% | Sold out |
| ORG Partners LLC | 0 | $0 | 0.00% | −50−100.0% | Sold out |
| Wolverine Trading, LLC | – | – | – | – | Not filed |