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