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, Q1 2026
Institutional positions in Tecogen Inc. as of Mar 31, 2026. 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
- 62
- −2 vs. Q4 2025
- Shares held
- 7.79M
- +1.04M (+15.4%) vs. Q4 2025
- Total value
- $19.9M
- −$13.4M (−40.2%) vs. Q4 2025
- New holders
- 15
- 16 more added
- Sold out
- 17
- 19 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Tecogen Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 769,964 | $1.97M | 0.00% | +769,964 | New |
| Bard Associates Inc | 688,309 | $1.76M | 0.44% | −798−0.1% | Reduced |
| Clear Harbor Asset Management, LLC | 650,000 | $1.66M | 0.12% | +40,000+6.6% | Added |
| Portolan Capital Management, LLC | 443,555 | $1.14M | 0.06% | −2,255−0.5% | Reduced |
| Herald Investment Management Ltd | 420,000 | $1.08M | 0.15% | 00.0% | Unchanged |
| Arosa Capital Management LP | 350,000 | $896.0K | 0.58% | 00.0% | Unchanged |
| Palisades Investment Partners, LLC | 333,907 | $854.8K | 0.34% | −56,305−14.4% | Reduced |
| UBS Group AG | 319,836 | $818.8K | 0.00% | +214,877+204.7% | Added |
| Meros Investment Management, LP | 291,705 | $746.8K | 0.32% | +291,705 | New |
| Renaissance Technologies LLC | 272,300 | $697.1K | 0.00% | +218,000+401.5% | Added |
| Gendell Jeffrey L | 245,541 | $628.6K | 0.01% | −50,000−16.9% | Reduced |
| Integrated Wealth Concepts LLC | 218,380 | $559.1K | 0.00% | +218,380 | New |
| Marshall Wace, LLP | 207,467 | $531.1K | 0.00% | −78,858−27.5% | Reduced |
| Geode Capital Management, LLC | 192,002 | $491.8K | 0.00% | +14,088+7.9% | Added |
| Raymond James Financial Inc | 185,794 | $475.6K | 0.00% | +86,040+86.3% | Added |
| BlackRock, Inc. | 184,779 | $473.0K | 0.00% | −6,581−3.4% | Reduced |
| Citadel Advisors LLC | 147,472 | $377.5K | 0.00% | +98,552+201.5% | Added |
| New York State Common Retirement Fund | 137,200 | $351.2K | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 132,665 | $339.6K | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 117,342 | $300.4K | 0.00% | −90,265−43.5% | Reduced |
| Susquehanna International Group, LLP | 109,457 | $280.2K | 0.00% | −193,454−63.9% | Reduced |
| Thompson Davis & Co., Inc. | 99,000 | $253.4K | 0.17% | −21,450−17.8% | Reduced |
| Vanguard Fiduciary Trust Co | 96,442 | $246.9K | 0.00% | +96,442 | New |
| Gsa Capital Partners LLP | 94,170 | $241.0K | 0.01% | +74,738+384.6% | Added |
| Granahan Investment Management Inc | 88,496 | $226.6K | 0.01% | −89,326−50.2% | Reduced |
| Group One Trading, L.P. | 83,922 | $214.8K | 0.01% | +27,344+48.3% | Added |
| Apis Capital Advisors, LLC | 77,000 | $197.1K | 0.03% | +77,000 | New |
| Morgan Stanley | 76,736 | $196.4K | 0.00% | +6,758+9.7% | Added |
| State Street Corp | 69,226 | $177.2K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 67,418 | $172.6K | 0.00% | −151,210−69.2% | Reduced |
| PFG Investments, LLC | 62,523 | $160.1K | 0.01% | 00.0% | Unchanged |
| Corsair Capital Management, L.P. | 55,017 | $140.8K | 0.02% | 00.0% | Unchanged |
| Diametric Capital, LP | 53,131 | $136.0K | 0.04% | −96−0.2% | Reduced |
| Simplex Trading, LLC | 41,332 | $105.8K | 0.00% | −5,199−11.2% | Reduced |
| LPL Financial LLC | 41,251 | $105.6K | 0.00% | −32,542−44.1% | Reduced |
| Gamco Investors, Inc. Et Al | 40,000 | $102.4K | 0.00% | 00.0% | Unchanged |
| Harbor Capital Advisors, Inc. | 39,973 | $102.0K | 0.01% | −474−1.2% | Reduced |
| Northern Trust Corp | 37,681 | $96.5K | 0.00% | 00.0% | Unchanged |
| Jump Financial, LLC | 35,500 | $90.9K | 0.00% | +35,500 | New |
| Bridgeway Capital Management, LLC | 33,048 | $84.6K | 0.00% | +7,548+29.6% | Added |
| Goldman Sachs Group Inc | 25,106 | $64.3K | 0.00% | −42,618−62.9% | Reduced |
| Gabelli Funds LLC | 20,000 | $51.2K | 0.00% | +20,000 | New |
| Pathstone Holdings, LLC | 18,725 | $47.9K | 0.00% | 00.0% | Unchanged |
| Shikiar Asset Management Inc | 17,650 | $45.0K | 0.01% | +4,350+32.7% | Added |
| Commonwealth Equity Services, LLC | 16,124 | $41.3K | 0.00% | +4,350+36.9% | Added |
| HRT Financial LP | 15,071 | $38.0K | 0.00% | +15,071 | New |
| IMC-Chicago, LLC | 13,650 | $34.9K | 0.00% | −29,305−68.2% | Reduced |
| Dimensional Fund Advisors LP | 11,163 | $28.6K | 0.00% | +11,163 | New |
| Tower Research Capital LLC (TRC) | 10,189 | $26.1K | 0.00% | +10,189 | New |
| Citizens Financial Group Inc | 10,000 | $25.6K | 0.00% | +10,000 | New |
| Vanguard Global Advisers, LLC | 5,434 | $13.9K | 0.00% | +5,434 | New |
| GWM Advisors LLC | 4,419 | $11.3K | 0.00% | +4,331+4,921.6% | Added |
| Royal Bank of Canada | 3,143 | $8.00K | 0.00% | −82,402−96.3% | Reduced |
| EverSource Wealth Advisors, LLC | 2,500 | $6.40K | 0.00% | +1,500+150.0% | Added |
| Advisory Services Network, LLC | 2,490 | $6.37K | 0.00% | +2,490 | New |
| UBS Asset Management Americas Inc | 1,583 | $4.05K | 0.00% | +1,583 | New |
| Federation des caisses Desjardins du Quebec | 562 | $1.44K | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 500 | $1.28K | 0.00% | +270+117.4% | Added |
| State of Wyoming | 494 | $1.26K | 0.00% | −44−8.2% | Reduced |
| Fortitude Family Office, LLC | 181 | $463 | 0.00% | +181 | New |
| SBI Securities Co., Ltd. | 120 | $307 | 0.00% | +3+2.6% | Added |
| MAI Capital Management | 64 | $164 | 0.00% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −83,907−100.0% | Sold out |
| Mangrove Partners | 0 | $0 | 0.00% | −61,207−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −54,763−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −42,000−100.0% | Sold out |
| J.W. Cole Advisors, Inc. | 0 | $0 | 0.00% | −26,300−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −22,820−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −22,507−100.0% | Sold out |
| Hidden Cove Wealth Management, LLC | 0 | $0 | 0.00% | −21,087−100.0% | Sold out |
| Ark Wealth Advisors LLC | 0 | $0 | 0.00% | −14,881−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −10,920−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −10,784−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −8,535−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −450−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −214−100.0% | Sold out |
| Laurel Wealth Advisors LLC | 0 | $0 | 0.00% | −45−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |