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, Q3 2025
Institutional positions in Tecogen Inc. as of Sep 30, 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
- 70
- +40 vs. Q2 2025
- Shares held
- 7.73M
- +3.86M (+99.9%) vs. Q2 2025
- Total value
- $68.0M
- +$41.6M (+157.6%) vs. Q2 2025
- New holders
- 42
- 14 more added
- Sold out
- 2
- 6 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Tecogen Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 870,440 | $7.67M | 0.00% | +44,797+5.4% | Added |
| Bard Associates Inc | 690,611 | $6.08M | 1.61% | +67,029+10.7% | Added |
| Clear Harbor Asset Management, LLC | 611,600 | $5.39M | 0.38% | +1,600+0.3% | Added |
| Portolan Capital Management, LLC | 595,806 | $5.25M | 0.28% | +130,235+28.0% | Added |
| Herald Investment Management Ltd | 446,078 | $3.90M | 0.52% | +125,000+38.9% | Added |
| Palisades Investment Partners, LLC | 376,594 | $3.32M | 1.30% | +376,594 | New |
| Arosa Capital Management LP | 287,500 | $2.53M | 3.90% | +287,500 | New |
| Susquehanna International Group, LLP | 252,035 | $2.22M | 0.00% | +252,035 | New |
| Two Sigma Investments, LP | 246,705 | $2.17M | 0.00% | +246,705 | New |
| Gendell Jeffrey L | 243,622 | $2.15M | 0.04% | +201,922+484.2% | Added |
| Integrated Wealth Concepts LLC | 216,465 | $1.91M | 0.02% | +39,215+22.1% | Added |
| Citadel Advisors LLC | 213,708 | $1.88M | 0.00% | +213,708 | New |
| BlackRock, Inc. | 184,779 | $1.63M | 0.00% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 166,557 | $1.47M | 0.00% | +23,707+16.6% | Added |
| Raymond James Financial Inc | 157,888 | $1.39M | 0.00% | +157,888 | New |
| Apis Capital Advisors, LLC | 153,000 | $1.35M | 0.30% | +153,000 | New |
| New York State Common Retirement Fund | 137,200 | $1.21M | 0.00% | +137,200 | New |
| Goldman Sachs Group Inc | 132,762 | $1.17M | 0.00% | +132,762 | New |
| Royal Bank of Canada | 122,389 | $1.08M | 0.00% | +63,889+109.2% | Added |
| Thompson Davis & Co., Inc. | 117,953 | $1.04M | 0.64% | +117,953 | New |
| Granahan Investment Management Inc | 112,338 | $989.7K | 0.04% | +112,338 | New |
| Renaissance Technologies LLC | 102,200 | $900.4K | 0.00% | +102,200 | New |
| Russell Investments Group, Ltd. | 94,696 | $834.3K | 0.00% | +94,696 | New |
| Jane Street Group, LLC | 93,110 | $820.3K | 0.00% | +93,110 | New |
| EAM Investors, LLC | 74,101 | $652.8K | 0.07% | +74,101 | New |
| State Street Corp | 69,726 | $614.3K | 0.00% | +28,326+68.4% | Added |
| HighTower Advisors, LLC | 63,067 | $555.6K | 0.00% | −500−0.8% | Reduced |
| PFG Investments, LLC | 62,523 | $550.8K | 0.03% | 00.0% | Unchanged |
| Corsair Capital Management, L.P. | 55,000 | $484.6K | 0.09% | −12,760−18.8% | Reduced |
| Manatuck Hill Partners, LLC | 50,000 | $440.5K | 0.15% | +50,000 | New |
| Marshall Wace, LLP | 49,089 | $432.5K | 0.00% | +49,089 | New |
| Millennium Management LLC | 48,245 | $425.0K | 0.00% | +48,245 | New |
| ARS Investment Partners, LLC | 43,173 | $380.4K | 0.03% | +43,173 | New |
| Gamco Investors, Inc. Et Al | 40,000 | $352.4K | 0.00% | −2,000−4.8% | Reduced |
| Heron Bay Capital Management | 37,167 | $327.4K | 0.06% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 36,200 | $318.9K | 0.00% | +36,200 | New |
| Evernest Financial Advisors, LLC | 34,150 | $300.9K | 0.08% | +34,150 | New |
| Group One Trading, L.P. | 33,952 | $299.1K | 0.01% | +33,952 | New |
| Simplex Trading, LLC | 31,562 | $278.0K | 0.01% | +31,562 | New |
| J.W. Cole Advisors, Inc. | 31,400 | $276.6K | 0.01% | +31,400 | New |
| Diametric Capital, LP | 30,741 | $270.8K | 0.10% | +30,741 | New |
| Harbor Capital Advisors, Inc. | 27,481 | $242.0K | 0.02% | +27,481 | New |
| Northern Trust Corp | 25,737 | $226.7K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 25,500 | $224.7K | 0.00% | +25,500 | New |
| Morgan Stanley | 22,385 | $197.2K | 0.00% | +21,785+3,630.8% | Added |
| Virtu Financial LLC | 20,036 | $177.0K | 0.01% | +20,036 | New |
| Pathstone Holdings, LLC | 18,725 | $165.0K | 0.00% | 00.0% | Unchanged |
| Shikiar Asset Management Inc | 18,500 | $163.0K | 0.04% | −3,500−15.9% | Reduced |
| Wolverine Trading, LLC | 17,495 | $143.6K | 0.00% | +17,495 | New |
| Tower Research Capital LLC (TRC) | 15,234 | $134.2K | 0.00% | +14,738+2,971.4% | Added |
| Gordian Capital Singapore Pte Ltd | 14,700 | $129.5K | 0.18% | −389−2.6% | Reduced |
| Marex Group plc | 14,700 | $129.5K | 0.00% | +14,700 | New |
| Hidden Cove Wealth Management, LLC | 14,042 | $123.7K | 0.08% | +14,042 | New |
| Rockefeller Capital Management L.P. | 12,500 | $110.1K | 0.00% | +12,500 | New |
| Calamos Advisors LLC | 12,479 | $109.9K | 0.00% | +12,479 | New |
| Charles Schwab Investment Management Inc | 12,000 | $105.7K | 0.00% | +12,000 | New |
| GWM Advisors LLC | 10,300 | $90.7K | 0.00% | +10,300 | New |
| UBS Group AG | 9,588 | $84.5K | 0.00% | +9,585+319,500.0% | Added |
| Advisory Services Network, LLC | 5,000 | $44.0K | 0.00% | −5,000−50.0% | Reduced |
| CoreCap Advisors, LLC | 4,944 | $43.6K | 0.00% | +4,944 | New |
| Bank of America Corp | 4,836 | $42.6K | 0.00% | +4,720+4,069.0% | Added |
| EverSource Wealth Advisors, LLC | 2,000 | $17.6K | 0.00% | +2,000 | New |
| Altshuler Shaham Ltd | 1,500 | $13.2K | 0.00% | +1,500 | New |
| JPMorgan Chase & Co | 450 | $3.96K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 500 | $3.82K | 0.00% | +500 | New |
| National Bank of Canada | 230 | $2.01K | 0.00% | +230 | New |
| SBI Securities Co., Ltd. | 117 | $1.03K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 90 | $793 | 0.00% | +90 | New |
| MAI Capital Management | 64 | $564 | 0.00% | 00.0% | Unchanged |
| ORG Partners LLC | 50 | $440 | 0.00% | +50 | New |
| Global Retirement Partners, LLC | 0 | $0 | 0.00% | −5,145−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −1,329−100.0% | Sold out |