Tecogen Inc.: which funds bought and sold
Institutions that bought and sold Tecogen shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 38 institutions that filed 13F reports for both quarters added to or opened positions in Tecogen, and 28 cut or closed them. Together they added a net 1.7M shares, +21.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 341K shares (−43.2%); index fund managers were net buyers of 84K shares (+6.2%). 20 opened a new position and 13 sold out entirely.
Bought, Q2 2026 38 institutions, 20 of them new holders Sold, Q2 2026 28 institutions, 13 of them sold out
Net change, all compared +1.7M shares (+21.7%)
Net change, active managers −341K shares (−43.2%), 5 bought, 3 sold
Buyers versus sellers
38 bought 16 28 sold
Active managers and hedge funds 5 bought · 3 sold · −341K
Index fund managers 3 bought · 2 sold · +84K
Other institutions 30 bought · 23 sold · +1.9M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Portolan Capital Management, LLC | +1.1M +249.7% | 1.6M | $8.1M |
| Gratia Capital, LLC | +389K New position | 389K | $2M |
| Morgan Stanley | +225K +293.2% | 302K | $1.6M |
| Huntleigh Advisors, Inc. | +220K New position | 220K | $1.1M |
| Susquehanna International Group, LLP | +206K +188.5% | 316K | $1.6M |
| Heartland Advisors Inc | +182K New position | 182K | $950,562 |
| Raymond James Financial Inc | +104K +56.2% | 290K | $1.5M |
| Citadel Advisors LLC Hedge fund | +95K +64.3% | 242K | $1.3M |
| Blackrock, Inc. Index funds | +67K +36.1% | 251K | $1.3M |
| Meros Investment Management, LP | +62K +21.2% | 353K | $1.8M |
| Imc-Chicago, LLC | +48K +352.7% | 62K | $322,596 |
| Thompson Davis & Co., Inc. | +46K +46.3% | 145K | $755,856 |
| Goldman Sachs Group Inc | +44K +176.9% | 70K | $362,946 |
| HRT Financial LP | +44K +293.4% | 59K | $309,000 |
| UBS Group AG | +43K +13.5% | 363K | $1.9M |
| Shikiar Asset Management Inc | +36K +206.2% | 54K | $282,000 |
| Apis Capital Advisors, LLC | +35K +45.5% | 112K | $584,640 |
| Xtx Topco Ltd | +32K New position | 32K | $169,185 |
| Gsa Capital Partners LLP | +32K +34.3% | 126K | $660,000 |
| Centiva Capital, LP Hedge fund | +28K New position | 28K | $143,696 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Citadel Advisors LLC Hedge fund | +95K +64.3% | 242K | $1.3M |
| Centiva Capital, LP Hedge fund | +28K New position | 28K | $143,696 |
| D. E. Shaw & Co., Inc. Hedge fund | +15K New position | 15K | $80,070 |
| Quadrature Capital Ltd Hedge fund | +14K New position | 14K | $73,398 |
| FMR LLC Active manager | +53 New position | 53 | $279 |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Renaissance Technologies LLC Hedge fund | −272K Sold out | 0 | — |
| Arosa Capital Management LP | −225K −64.3% | 125K | $652,500 |
| Gendell Jeffrey L | −196K −79.7% | 50K | $260,076 |
| Marshall Wace, LLP Hedge fund | −153K −73.6% | 55K | $286,087 |
| Integrated Wealth Concepts LLC | −106K −48.7% | 112K | $585,058 |
| Hightower Advisors, LLC | −93K −70.2% | 40K | $206,191 |
| Granahan Investment Management, LLC | −88K Sold out | 0 | — |
| Jane Street Group, LLC | −68K −58.2% | 49K | $256,234 |
| Two Sigma Investments, LP Hedge fund | −67K Sold out | 0 | — |
| LPL Financial LLC | −41K Sold out | 0 | — |
| Simplex Trading, LLC | −41K −98.8% | 479 | $2,500 |
| Harbor Capital Advisors, Inc. | −40K Sold out | 0 | — |
| Jump Financial, LLC | −36K Sold out | 0 | — |
| Group One Trading LLC | −34K −40.6% | 50K | $260,332 |
| Geode Capital Management, LLC Index funds | −11K −5.8% | 181K | $944,802 |
| Palisades Investment Partners, LLC | −11K −3.2% | 323K | $1.7M |
| Tower Research Capital LLC (TRC) | −10K Sold out | 0 | — |
| Bard Associates Inc | −6,088 −0.9% | 682K | $3.6M |
| Newedge Advisors, LLC | −4,419 Sold out | 0 | — |
| Royal Bank Of Canada | −2,916 −93.6% | 200 | $1,000 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Renaissance Technologies LLC Hedge fund | −272K Sold out | 0 | — |
| Marshall Wace, LLP Hedge fund | −153K −73.6% | 55K | $286,087 |
| Two Sigma Investments, LP Hedge fund | −67K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Gratia Capital, LLC | 389K | $2M |
| Huntleigh Advisors, Inc. | 220K | $1.1M |
| Heartland Advisors Inc | 182K | $950,562 |
| Xtx Topco Ltd | 32K | $169,185 |
| Centiva Capital, LPHedge fund | 28K | $143,696 |
| Crewe Advisors LLC | 23K | $120,060 |
| Jefferies Financial Group Inc. | 19K | $100,746 |
| Virtu Financial LLC | 16K | $85,000 |
| D. E. Shaw & Co., Inc.Hedge fund | 15K | $80,070 |
| Belvedere Trading LLC | 15K | $79,375 |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Renaissance Technologies LLCHedge fund | 272K | $697,088 |
| Granahan Investment Management, LLC | 88K | $226,550 |
| Two Sigma Investments, LPHedge fund | 67K | $172,590 |
| LPL Financial LLC | 41K | $105,603 |
| Harbor Capital Advisors, Inc. | 40K | $102,000 |
| Jump Financial, LLC | 36K | $90,880 |
| Tower Research Capital LLC (TRC) | 10K | $26,084 |
| Newedge Advisors, LLC | 4,419 | $11,313 |
| Eversource Wealth Advisors, LLC | 2,500 | $6,400 |
| Advisory Services Network, LLC | 2,490 | $6,374 |
Who holds the shares
- Institutions reporting
- 69
- Ten largest holders
- 61.6% of 13F-reported shares
- Index fund managers
- 15.1% of 13F-reported shares
- Active managers and hedge funds
- 4.7% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 5 | 3 | 4 | 2 | −341K | −43.2% |
| Index fund managers | 3 | 2 | 0 | 0 | +84K | +6.2% |
| Other institutions | 30 | 23 | 16 | 11 | +1.9M | +34.5% |