New Positions
17 managers initiated
Top five by reported value
- Caption Management, LLC$741.0K
- Point72 Asset Management, L.P.$414.5K
- LPL Financial LLC$364.5K
- MANGROVE PARTNERS$302.4K
- XTX Topco Ltd$270.5K
Tecogen Inc OTC MARKETS:TGEN
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
17 new23 added28 reduced20 exited
Total Institutional Holders
68
as of 2025-12-31
Top Holder
VANGUARD GROUP INC
$4.3M
Largest QoQ Increase
MARSHALL WACE, LLP
+237,236 sh
Largest QoQ Decrease
CITADEL ADVISORS LLC
-304,488 sh
New Positions(17)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Caption Management, LLC | 150,000 | +150,000 | $741.0K | +$741.0K | — |
| Point72 Asset Management, L.P. | 83,907 | +83,907 | $414.5K | +$414.5K | — |
| LPL Financial LLC | 73,793 | +73,793 | $364.5K | +$364.5K | — |
| MANGROVE PARTNERS | 61,207 | +61,207 | $302.4K | +$302.4K | — |
| XTX Topco Ltd | 54,763 | +54,763 | $270.5K | +$270.5K | — |
| IMC-Chicago, LLC | 42,955 | +42,955 | $212.2K | +$212.2K | — |
| OMERS ADMINISTRATION Corp | 42,000 | +42,000 | $207.5K | +$207.5K | — |
| Quantbot Technologies LP | 22,820 | +22,820 | $112.7K | +$112.7K | — |
| Ark Wealth Advisors LLC | 14,881 | +14,881 | $73.5K | +$73.5K | — |
| COMMONWEALTH EQUITY SERVICES, LLC | 11,774 | +11,774 | $58.2K | +$58.2K | — |
| Lighthouse Investment Partners, LLC | 10,920 | +10,920 | $53.9K | +$53.9K | — |
| CITIGROUP INC | 8,535 | +8,535 | $42.2K | +$42.2K | — |
| Caitong International Asset Management Co., Ltd | 782 | +782 | $3.9K | +$3.9K | — |
| Federation des caisses Desjardins du Quebec | 562 | +562 | $2.8K | +$2.8K | — |
| BNP PARIBAS ARBITRAGE, SNC | 214 | +214 | $1.1K | +$1.1K | — |
| Laurel Wealth Advisors LLC | 45 | +45 | $223 | +$223 | — |
| GSA CAPITAL PARTNERS LLP | 19,432 | +19,432 | $96 | +$96 | — |
Added To(23)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 871,840 | +1,400 | $4.3M | -$3.4M | 0.2% |
| Palisades Investment Partners, LLC | 390,212 | +13,618 | $1.9M | -$1.4M | 3.6% |
| MARSHALL WACE, LLP | 286,325 | +237,236 | $1.4M | +$982.0K | 483.3% |
| Arosa Capital Management LP | 350,000 | +62,500 | $1.7M | -$803.9K | 21.7% |
| GENDELL JEFFREY L | 295,541 | +51,919 | $1.5M | -$686.3K | 21.3% |
| BlackRock, Inc. | 191,360 | +6,581 | $945.3K | -$682.6K | 3.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 177,914 | +11,357 | $879.5K | -$588.4K | 6.8% |
| THOMPSON DAVIS & CO., INC. | 120,450 | +2,497 | $595.0K | -$444.1K | 2.1% |
| UBS Group AG | 104,959 | +95,371 | $518.5K | +$434.0K | 994.7% |
| JANE STREET GROUP, LLC | 318,007 | +96,197 | $1.6M | -$383.2K | 43.4% |
| SIMPLEX TRADING, LLC | 46,531 | +14,969 | $229.9K | +$229.6K | 47.4% |
| CORSAIR CAPITAL MANAGEMENT, L.P. | 55,017 | +17 | $271.8K | -$212.8K | 0.0% |
| MORGAN STANLEY | 69,978 | +47,593 | $345.7K | +$148.5K | 212.6% |
| Granahan Investment Management, LLC | 177,822 | +65,484 | $878.4K | -$111.3K | 58.3% |
| HighTower Advisors, LLC | 132,665 | +69,598 | $655.4K | +$99.7K | 110.3% |
| NORTHERN TRUST CORP | 37,681 | +11,944 | $186.1K | -$40.6K | 46.4% |
| Royal Bank of Canada | 85,545 | +27,045 | $423.0K | +$25.0K | 46.2% |
| GROUP ONE TRADING, L.P. | 56,578 | +22,626 | $279.5K | -$19.6K | 66.6% |
| Hidden Cove Wealth Management, LLC | 21,087 | +7,045 | $104.2K | -$19.5K | 50.2% |
| BANK OF AMERICA CORP /DE/ | 10,784 | +5,948 | $53.3K | +$10.7K | 123.0% |
| Diametric Capital, LP | 53,227 | +22,486 | $262.9K | -$7.9K | 73.1% |
| State of Wyoming | 538 | +448 | $2.7K | +$1.9K | 497.8% |
| HARBOR CAPITAL ADVISORS, INC. | 40,447 | +12,966 | $200 | -$42 | 47.2% |
Reduced(28)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | 153,820 | -304,488 | $759.9K | -$3.3M | -66.4% |
| Portolan Capital Management, LLC | 445,810 | -149,996 | $2.2M | -$3.0M | -25.2% |
| BARD ASSOCIATES INC | 689,107 | -1,504 | $3.4M | -$2.7M | -0.2% |
| Clear Harbor Asset Management, LLC | 610,000 | -1,600 | $3.0M | -$2.4M | -0.3% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 537,411 | -22,324 | $2.7M | -$2.3M | -4.0% |
| Herald Investment Management Ltd | 420,000 | -26,078 | $2.1M | -$1.8M | -5.8% |
| TWO SIGMA INVESTMENTS, LP | 218,628 | -28,077 | $1.1M | -$1.1M | -11.4% |
| RAYMOND JAMES FINANCIAL INC | 99,754 | -58,134 | $492.8K | -$898.2K | -36.8% |
| GOLDMAN SACHS GROUP INC | 67,724 | -65,038 | $334.6K | -$835.1K | -49.0% |
| RENAISSANCE TECHNOLOGIES LLC | 54,300 | -47,900 | $268.2K | -$632.1K | -46.9% |
| NEW YORK STATE COMMON RETIREMENT FUND | 137,200 | 0 | $677.8K | -$531.0K | 0.0% |
| MILLENNIUM MANAGEMENT LLC | 22,507 | -25,738 | $111.2K | -$313.9K | -53.3% |
| STATE STREET CORP | 69,226 | -500 | $342.0K | -$272.3K | -0.7% |
| PFG Investments, LLC | 62,523 | 0 | $308.9K | -$242.0K | 0.0% |
| GAMCO INVESTORS, INC. ET AL | 40,000 | 0 | $197.6K | -$154.8K | 0.0% |
| J.W. COLE ADVISORS, INC. | 26,300 | -5,100 | $129.9K | -$146.7K | -16.2% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 25,500 | 0 | $126.0K | -$98.7K | 0.0% |
| NewEdge Advisors, LLC | 88 | -10,212 | $435 | -$90.3K | -99.1% |
| Pathstone Holdings, LLC | 18,725 | 0 | $92.5K | -$72.5K | 0.0% |
| Centiva Capital, LP | 18,400 | 0 | $90.9K | -$71.2K | 0.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 12,000 | 0 | $59.3K | -$46.4K | 0.0% |
| EverSource Wealth Advisors, LLC | 1,000 | -1,000 | $4.9K | -$12.7K | -50.0% |
| JPMORGAN CHASE & CO | 450 | 0 | $2.2K | -$1.7K | 0.0% |
| ADVISOR GROUP HOLDINGS, INC. | 500 | 0 | $2.5K | -$1.4K | 0.0% |
| NATIONAL BANK OF CANADA /FI/ | 230 | 0 | $1.1K | -$869 | 0.0% |
| SBI Securities Co., Ltd. | 117 | 0 | $578 | -$453 | 0.0% |
| MAI Capital Management | 64 | 0 | $317 | -$247 | 0.0% |
| SHIKIAR ASSET MANAGEMENT INC | 13,300 | -5,200 | $66 | -$97 | -28.1% |
Sold Out(20)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Integrated Wealth Concepts LLC | 0 | -216,465 | $0 | -$1.9M | — |
| Apis Capital Advisors, LLC | 0 | -153,000 | $0 | -$1.3M | — |
| WOLVERINE TRADING, LLC | 0 | -102,295 | $0 | -$839.8K | — |
| Russell Investments Group, Ltd. | 0 | -94,696 | $0 | -$834.3K | — |
| EAM Investors, LLC | 0 | -74,101 | $0 | -$652.8K | — |
| Manatuck Hill Partners, LLC | 0 | -50,000 | $0 | -$440.5K | — |
| ARS Investment Partners, LLC | 0 | -43,173 | $0 | -$380.4K | — |
| Heron Bay Capital Management | 0 | -37,167 | $0 | -$327.4K | — |
| TWO SIGMA ADVISERS, LP | 0 | -36,200 | $0 | -$318.9K | — |
| Evernest Financial Advisors, LLC | 0 | -34,150 | $0 | -$300.9K | — |
| Tower Research Capital LLC (TRC) | 0 | -15,234 | $0 | -$134.2K | — |
| Marex Group plc | 0 | -14,700 | $0 | -$129.5K | — |
| Gordian Capital Singapore Pte Ltd | 0 | -14,700 | $0 | -$129.5K | — |
| Rockefeller Capital Management L.P. | 0 | -12,500 | $0 | -$110.1K | — |
| Calamos Advisors LLC | 0 | -12,479 | $0 | -$109.9K | — |
| Advisory Services Network, LLC | 0 | -5,000 | $0 | -$44.0K | — |
| CoreCap Advisors, LLC | 0 | -4,944 | $0 | -$43.6K | — |
| Altshuler Shaham Ltd | 0 | -1,500 | $0 | -$13.2K | — |
| ORG Partners LLC | 0 | -50 | $0 | -$440 | — |
| Virtu Financial LLC | 0 | -20,036 | $0 | -$177 | — |
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
New & Closed Positions this quarter
Closed Positions
20 managers exited
Top five by prior-quarter value
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for TGEN against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.