TECOGEN INC. - TGEN
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | History | Added to | 871,840 | 4,306 | 0.0% | 0.0% | 1 | +1,400 | 0.16% | Q4 2025 | Jan 29, 2026 |
| BARD ASSOCIATES INC | History | Reduced | 689,107 | 3,404 | 0.87% | 1.61% | 2 | -1,504 | -0.22% | Q4 2025 | Feb 13, 2026 |
| Clear Harbor Asset Management, LLC | History | Reduced | 610,000 | 3,013 | 0.2% | 0.37% | 3 | -1,600 | -0.26% | Q4 2025 | Feb 10, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 537,411 | 2,654 | 0.0% | 0.0% | 4 | -22,324 | -3.99% | Q4 2025 | Feb 17, 2026 |
| Portolan Capital Management, LLC | History | Reduced | 445,810 | 2,202 | 0.12% | 0.28% | 5 | -149,996 | -25.18% | Q4 2025 | Feb 17, 2026 |
| HERALD INVESTMENT MANAGEMENT Ltd | History | Reduced | 420,000 | 2,083 | 0.27% | 0.52% | 6 | -26,078 | -5.85% | Q4 2025 | Feb 13, 2026 |
| Palisades Investment Partners, LLC | History | Added to | 390,212 | 1,927 | 0.73% | 1.3% | 7 | +13,618 | 3.62% | Q4 2025 | Jan 20, 2026 |
| Arosa Capital Management LP | History | Added to | 350,000 | 1,729 | 0.22% | 0.56% | 8 | +62,500 | 21.74% | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 318,007 | 1,570 | 0.0% | 0.0% | 9 | +96,197 | 43.37% | Q4 2025 | Feb 12, 2026 |
| GENDELL JEFFREY L | History | Added to | 295,541 | 1,459 | 0.03% | 0.04% | 10 | +51,919 | 21.31% | Q4 2025 | Feb 13, 2026 |
| MARSHALL WACE, LLP | History | Added to | 286,325 | 1,414 | 0.0% | 0.0% | 11 | +237,236 | 483.28% | Q4 2025 | Feb 13, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Reduced | 218,628 | 1,080 | 0.0% | 0.0% | 12 | -28,077 | -11.38% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 191,360 | 945 | 0.0% | 0.0% | 13 | +6,581 | 3.56% | Q4 2025 | Feb 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 177,914 | 879 | 0.0% | 0.0% | 14 | +11,357 | 6.82% | Q4 2025 | Feb 09, 2026 |
| Granahan Investment Management, LLC | History | Added to | 177,822 | 878 | 0.04% | 0.04% | 15 | +65,484 | 58.29% | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 153,820 | 759 | 0.0% | 0.0% | 16 | -304,488 | -66.44% | Q4 2025 | Feb 17, 2026 |
| Caption Management, LLC | History | New | 150,000 | 741 | 0.01% | — | 17 | +150,000 | New | Q4 2025 | Feb 17, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 137,200 | 677 | 0.0% | 0.0% | 18 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| HighTower Advisors, LLC | History | Added to | 132,665 | 655 | 0.0% | 0.0% | 19 | +69,598 | 110.36% | Q4 2025 | Feb 06, 2026 |
| THOMPSON DAVIS & CO., INC. | History | Added to | 120,450 | 595 | 0.36% | 0.64% | 20 | +2,497 | 2.12% | Q4 2025 | Jan 12, 2026 |
| UBS Group AG | History | Added to | 104,959 | 518 | 0.0% | 0.0% | 21 | +95,371 | 994.69% | Q4 2025 | Jan 29, 2026 |
| SIMPLEX TRADING, LLC | History | Reduced | 104,731 | 517 | 0.0% | 0.0% | 22 | -16,231 | -13.42% | Q4 2025 | Feb 11, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 100,078 | 494 | 0.0% | 0.0% | 23 | -30,374 | -23.28% | Q4 2025 | Feb 12, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | Reduced | 99,754 | 492 | 0.0% | 0.0% | 24 | -58,134 | -36.82% | Q4 2025 | Feb 18, 2026 |
| IMC-Chicago, LLC | History | New | 95,055 | 469 | 0.0% | — | 25 | +95,055 | New | Q4 2025 | Jan 29, 2026 |
| ROYAL BANK OF CANADA | History | New | 85,545 | 423 | 0.0% | — | 26 | +85,545 | New | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | History | New | 83,907 | 414 | 0.0% | — | 27 | +83,907 | New | Q4 2025 | Feb 17, 2026 |
| LPL Financial LLC | History | New | 73,793 | 364 | 0.0% | — | 28 | +73,793 | New | Q4 2025 | Feb 11, 2026 |
| MORGAN STANLEY | History | Added to | 69,978 | 345 | 0.0% | 0.0% | 29 | +47,593 | 212.61% | Q4 2025 | Feb 13, 2026 |
| STATE STREET CORP | History | Reduced | 69,226 | 341 | 0.0% | 0.0% | 30 | -500 | -0.72% | Q4 2025 | Feb 13, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 67,724 | 334 | 0.0% | 0.0% | 31 | -65,038 | -48.99% | Q4 2025 | Mar 25, 2026 |
| PFG Investments, LLC | History | No change | 62,523 | 308 | 0.01% | 0.03% | 32 | 0 | 0.0% | Q4 2025 | Jan 26, 2026 |
| MANGROVE PARTNERS IM, LLC | History | New | 61,207 | 302 | 0.02% | — | 33 | +61,207 | New | Q4 2025 | Feb 17, 2026 |
| CORSAIR CAPITAL MANAGEMENT, L.P. | History | Added to | 55,017 | 271 | 0.04% | 0.08% | 34 | +17 | 0.03% | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | New | 54,763 | 270 | 0.01% | — | 35 | +54,763 | New | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 54,300 | 268 | 0.0% | 0.0% | 36 | -47,900 | -46.87% | Q4 2025 | Feb 12, 2026 |
| Diametric Capital, LP | History | Added to | 53,227 | 262 | 0.07% | 0.1% | 37 | +22,486 | 73.15% | Q4 2025 | Feb 13, 2026 |
| OMERS ADMINISTRATION Corp | History | New | 42,000 | 207 | 0.0% | — | 38 | +42,000 | New | Q4 2025 | Feb 13, 2026 |
| HARBOR CAPITAL ADVISORS, INC. | History | Added to | 40,447 | 200 | 0.02% | 0.02% | 39 | +12,966 | 47.18% | Q4 2025 | Jan 20, 2026 |
| GAMCO INVESTORS, INC. ET AL | History | No change | 40,000 | 197 | 0.0% | 0.0% | 40 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| NORTHERN TRUST CORP | History | Added to | 37,681 | 186 | 0.0% | 0.0% | 41 | +11,944 | 46.41% | Q4 2025 | Feb 17, 2026 |
| J.W. COLE ADVISORS, INC. | History | Reduced | 26,300 | 129 | 0.0% | 0.01% | 42 | -5,100 | -16.24% | Q4 2025 | Feb 11, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 25,500 | 125 | 0.0% | 0.0% | 43 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Quantbot Technologies LP | History | New | 22,820 | 112 | 0.0% | — | 44 | +22,820 | New | Q4 2025 | Feb 10, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 22,507 | 111 | 0.0% | 0.0% | 45 | -25,738 | -53.35% | Q4 2025 | Feb 17, 2026 |
| Hidden Cove Wealth Management, LLC | History | Added to | 21,087 | 104 | 0.07% | 0.08% | 46 | +7,045 | 50.17% | Q4 2025 | Feb 02, 2026 |
| GSA CAPITAL PARTNERS LLP | History | New | 19,432 | 96 | 0.01% | — | 47 | +19,432 | New | Q4 2025 | Feb 06, 2026 |
| Pathstone Holdings, LLC | History | New | 18,725 | 92 | 0.0% | — | 48 | +18,725 | New | Q4 2025 | Feb 13, 2026 |
| Centiva Capital, LP | History | No change | 18,400 | 90 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Ark Wealth Advisors LLC | History | New | 14,881 | 73 | 0.08% | — | 50 | +14,881 | New | Q4 2025 | Feb 18, 2026 |
| SHIKIAR ASSET MANAGEMENT INC | History | Reduced | 13,300 | 66 | 0.02% | 0.04% | 51 | -5,200 | -28.11% | Q4 2025 | Jan 22, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | No change | 12,000 | 59 | 0.0% | 0.0% | 52 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| COMMONWEALTH EQUITY SERVICES, LLC | History | New | 11,774 | 58 | 0.0% | — | 53 | +11,774 | New | Q4 2025 | Feb 12, 2026 |
| Lighthouse Investment Partners, LLC | History | New | 10,920 | 53 | 0.0% | — | 55 | +10,920 | New | Q4 2025 | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 10,784 | 53 | 0.0% | 0.0% | 54 | +5,948 | 122.99% | Q4 2025 | Feb 17, 2026 |
| CITIGROUP INC | History | New | 8,535 | 42 | 0.0% | — | 56 | +8,535 | New | Q4 2025 | Feb 13, 2026 |
| EverSource Wealth Advisors, LLC | History | Reduced | 1,000 | 4 | 0.0% | 0.0% | 57 | -1,000 | -50.0% | Q4 2025 | Feb 06, 2026 |
| Federation des caisses Desjardins du Quebec | History | New | 562 | 2 | 0.0% | — | 61 | +562 | New | Q4 2025 | Feb 12, 2026 |
| State of Wyoming | History | Added to | 538 | 2 | 0.0% | — | 60 | +448 | 497.78% | Q4 2025 | Feb 11, 2026 |
| JPMORGAN CHASE & CO | History | No change | 450 | 2 | 0.0% | 0.0% | 58 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| OSAIC HOLDINGS, INC. | History | No change | 500 | 2 | 0.0% | 0.0% | 59 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | New | 214 | 1 | 0.0% | — | 63 | +214 | New | Q4 2025 | Feb 10, 2026 |
| NATIONAL BANK OF CANADA /FI/ | History | No change | 230 | 1 | 0.0% | 0.0% | 62 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Integrated Wealth Concepts LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -216,465 | -100.0% | Q3 2025 | Nov 14, 2025 |
| APIS CAPITAL ADVISORS, LLC | History | Closed out | 0 | 0 | — | 0.3% | — | -153,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Russell Investments Group, Ltd. | History | Closed out | 0 | 0 | — | 0.0% | — | -94,696 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Informed Momentum Co LLC | History | Closed out | 0 | 0 | — | 0.07% | — | -74,101 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Manatuck Hill Partners, LLC | History | Closed out | 0 | 0 | — | 0.15% | — | -50,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| ARS Investment Partners, LLC | History | Closed out | 0 | 0 | — | 0.03% | — | -43,173 | -100.0% | Q3 2025 | Oct 15, 2025 |
| Heron Bay Capital Management | History | Closed out | 0 | 0 | — | 0.06% | — | -37,167 | -100.0% | Q3 2025 | Nov 12, 2025 |
| TWO SIGMA ADVISERS, LP | History | Closed out | 0 | 0 | — | 0.0% | — | -36,200 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Evernest Financial Advisors, LLC | History | Closed out | 0 | 0 | — | 0.08% | — | -34,150 | -100.0% | Q3 2025 | Nov 12, 2025 |
| Virtu Financial LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -20,036 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Tower Research Capital LLC (TRC) | History | Closed out | 0 | 0 | — | 0.0% | — | -15,234 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Gordian Capital Singapore Pte Ltd | History | Closed out | 0 | 0 | — | 0.17% | — | -14,700 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Marex Group plc | History | Closed out | 0 | 0 | — | 0.0% | — | -14,700 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Rockefeller Capital Management L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -12,500 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Calamos Advisors LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -12,479 | -100.0% | Q3 2025 | Oct 20, 2025 |
| NewEdge Advisors, LLC | History | Reduced | 88 | 0 | — | 0.0% | — | -10,212 | -99.15% | Q4 2025 | Feb 18, 2026 |
| Advisory Services Network, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -5,000 | -100.0% | Q3 2025 | Nov 18, 2025 |
| CoreCap Advisors, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -4,944 | -100.0% | Q3 2025 | Oct 22, 2025 |
| Altshuler Shaham Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -1,500 | -100.0% | Q3 2025 | Nov 13, 2025 |
| ORG Partners LLC | History | Closed out | 0 | 0 | — | — | — | -50 | -100.0% | Q3 2025 | Oct 24, 2025 |
| Laurel Wealth Advisors LLC | History | New | 45 | 0 | — | — | — | +45 | New | Q4 2025 | Jan 30, 2026 |
| MAI Capital Management | History | No change | 64 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| SBI Securities Co., Ltd. | History | No change | 117 | 0 | — | 0.0% | — | 0 | 0.0% | Q4 2025 | Feb 03, 2026 |