Tecogen Inc. (NYSE:TGEN) showed up in the 13F filings of 61 institutional investors as of March 2026.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 769,964 | 769,964 | 0.00% | $1,971,108.00 |
| BARD ASSOCIATES INC | 31 Mar, 2026 | 688,309 | -798 | -0.12% | $1,762,072.00 |
| Clear Harbor Asset Management, LLC | 31 Mar, 2026 | 650,000 | 40,000 | 6.56% | $1,664,000.00 |
| Portolan Capital Management, LLC | 31 Mar, 2026 | 443,555 | -2,255 | -0.51% | $1,135,501.00 |
| HERALD INVESTMENT MANAGEMENT Ltd | 31 Mar, 2026 | 420,000 | 0 | 0.00% | $1,079,400.00 |
| Arosa Capital Management LP | 31 Mar, 2026 | 350,000 | 0 | 0.00% | $896,000.00 |
| Palisades Investment Partners, LLC | 31 Mar, 2026 | 333,907 | -56,305 | -14.43% | $854,802.00 |
| UBS Group AG | 31 Mar, 2026 | 319,836 | 214,877 | 204.72% | $818,781.00 |
| Meros Investment Management, LP | 31 Mar, 2026 | 291,705 | 291,705 | 0.00% | $746,765.00 |
| RENAISSANCE TECHNOLOGIES LLC | 31 Mar, 2026 | 272,300 | 218,000 | 401.47% | $697,088.00 |
| GENDELL JEFFREY L | 31 Mar, 2026 | 245,541 | -50,000 | -16.92% | $628,585.00 |
| Integrated Wealth Concepts LLC | 31 Mar, 2026 | 218,380 | 218,380 | 0.00% | $559,053.00 |
| MARSHALL WACE, LLP | 31 Mar, 2026 | 207,467 | -78,858 | -27.54% | $531,114.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 192,002 | 14,088 | 7.92% | $491,827.00 |
| Raymond James Financial Inc | 31 Mar, 2026 | 185,794 | 86,040 | 86.25% | $475,633.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 184,779 | -6,581 | -3.44% | $473,034.00 |
| CITADEL ADVISORS LLC | 31 Mar, 2026 | 147,472 | 98,552 | 201.46% | $377,528.00 |
| NEW YORK STATE COMMON RETIREMENT FUND | 31 Mar, 2026 | 137,200 | 0 | 0.00% | $351,232.00 |
| HighTower Advisors, LLC | 31 Mar, 2026 | 132,665 | 0 | 0.00% | $339,623.00 |
| JANE STREET GROUP, LLC | 31 Mar, 2026 | 117,342 | -90,265 | -43.48% | $300,396.00 |