TGEN · Tecogen Inc.
$3.23
-0.17 (-5.00%)
At close · Jul 24
Market Cap
$101.72M
Shares
29.92M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
The Jun 30, 2026 filing window is
still open — showing the latest known positions. Funds that have not filed yet
carry their prior-quarter positions; a fund that filed without this stock counts
as sold out.
Holders: 63
Total Value: $23,438,490
Total Shares: 8,573,817
Institutional Ownership Trend
22 quarters
Superinvestors Holding TGEN
All superinvestors →Holder Concentration
Across 62 13F filersTop Holder
9.0%
of institutional value
Top 5
35.6%
of institutional value
Top 10
57.4%
of institutional value
HHI
440
Broadly held
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small HERALD INVESTMENT MANAGEMENT Ltd | $2,192,400 | 9.35% | 420,000 | Shares | Sole | 2026-07-23 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $1,971,107 | 8.41% | 769,964 | Shares | Defined | 2026-05-15 | ||||
| Small BARD ASSOCIATES INC | $1,762,071 | 7.52% | 688,309 | Shares | Sole | 2026-05-08 | ||||
| Mid Clear Harbor Asset Management, LLC | $1,664,000 | 7.10% | 650,000 | Shares | Sole | 2026-05-05 | ||||
| Mid Portolan Capital Management, LLC | $1,135,500 | 4.84% | 443,555 | Shares | Sole | 2026-05-15 | ||||
| Small Arosa Capital Management LP | $896,000 | 3.82% | 350,000 | Shares | Sole | 2026-05-15 | ||||
| Small Palisades Investment Partners, LLC | $854,801 | 3.65% | 333,907 | Shares | Sole | 2026-04-30 | ||||
| Mega UBS Group AG | $818,778 | 3.49% | 319,836 | Shares | Defined | 2026-05-05 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $753,664 | 3.22% | 294,400 | Call | Other | 2026-05-15 | ||||
| Small Meros Investment Management, LP | $746,764 | 3.19% | 291,705 | Shares | Sole | 2026-05-14 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $697,088 | 2.97% | 272,300 | Shares | Sole | 2026-05-14 | ||||
| Mid GENDELL JEFFREY L | $628,584 | 2.68% | 245,541 | Shares | Defined | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $594,944 | 2.54% | 232,400 | Call | Defined | 2026-05-15 | ||||
| Mid Integrated Wealth Concepts LLC | $559,052 | 2.39% | 218,380 | Shares | Sole | 2026-05-15 | ||||
| Large MARSHALL WACE, LLP | $531,114 | 2.27% | 207,467 | Shares | Other | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $491,524 | 2.10% | 192,002 | Shares | Defined | 2026-05-15 | ||||
| Mega RAYMOND JAMES FINANCIAL INC | $475,632 | 2.03% | 185,794 | Shares | Defined | 2026-05-14 | ||||
| Mega BlackRock, Inc. | $473,034 | 2.02% | 184,779 | Shares | Sole | 2026-05-13 | ||||
| Mega CITADEL ADVISORS LLC | $377,527 | 1.61% | 147,472 | Shares | Defined | 2026-05-15 | ||||
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $351,232 | 1.50% | 137,200 | Shares | Sole | 2026-05-06 | ||||
| Large HighTower Advisors, LLC | $339,622 | 1.45% | 132,665 | Shares | Sole | 2026-05-05 | ||||
| Mid PFG Investments, LLC | $326,370 | 1.39% | 62,523 | Shares | Sole | 2026-07-23 | ||||
| Mega JANE STREET GROUP, LLC | $300,393 | 1.28% | 117,342 | Shares | Defined | 2026-05-12 | ||||
| Small SHIKIAR ASSET MANAGEMENT INC | $282,141 | 1.20% | 54,050 | Shares | Sole | 2026-07-21 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $280,209 | 1.20% | 109,457 | Shares | Other | 2026-05-15 | ||||
| Small THOMPSON DAVIS & CO., INC. | $253,440 | 1.08% | 99,000 | Shares | Sole | 2026-04-16 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $246,891 | 1.05% | 96,442 | Shares | Defined | 2026-05-08 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $241,075 | 1.03% | 94,170 | Shares | Sole | 2026-05-08 | ||||
| Mid Granahan Investment Management, LLC | $226,549 | 0.97% | 88,496 | Shares | Sole | 2026-05-15 | ||||
| Mid GROUP ONE TRADING LLC | $214,840 | 0.92% | 83,922 | Shares | Sole | 2026-05-13 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $197,888 | 0.84% | 77,300 | Put | Other | 2026-05-15 | ||||
| Small Apis Capital Advisors, LLC | $197,120 | 0.84% | 77,000 | Shares | Sole | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $196,443 | 0.84% | 76,736 | Shares | Defined | 2026-05-15 | ||||
| Mega STATE STREET CORP | $177,218 | 0.76% | 69,226 | Shares | Defined | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $172,590 | 0.74% | 67,418 | Shares | Sole | 2026-05-15 | ||||
| Small CORSAIR CAPITAL MANAGEMENT, L.P. | $140,843 | 0.60% | 55,017 | Shares | Sole | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $140,032 | 0.60% | 54,700 | Put | Defined | 2026-05-12 | ||||
| Small Diametric Capital, LP | $136,015 | 0.58% | 53,131 | Shares | Defined | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $128,512 | 0.55% | 50,200 | Put | Defined | 2026-05-15 | ||||
| Small Crewe Advisors LLC | $120,060 | 0.51% | 23,000 | Shares | Sole | 2026-07-24 | ||||
| Mid SIMPLEX TRADING, LLC | $105,809 | 0.45% | 41,332 | Shares | Sole | 2026-05-14 | ||||
| Mega LPL Financial LLC | $105,602 | 0.45% | 41,251 | Shares | Sole | 2026-05-06 | ||||
| Mid GAMCO INVESTORS, INC. ET AL | $102,400 | 0.44% | 40,000 | Shares | Sole | 2026-05-14 | ||||
| Mid HARBOR CAPITAL ADVISORS, INC. | $102,330 | 0.44% | 39,973 | Shares | Sole | 2026-04-28 | ||||
| Mega NORTHERN TRUST CORP Bank | $96,463 | 0.41% | 37,681 | Shares | Defined | 2026-05-14 | ||||
| Mid Jump Financial, LLC | $90,880 | 0.39% | 35,500 | Shares | Defined | 2026-05-14 | ||||
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | $84,602 | 0.36% | 33,048 | Shares | Sole | 2026-05-15 | ||||
| Mega GOLDMAN SACHS GROUP INC | $64,271 | 0.27% | 25,106 | Shares | Defined | 2026-05-15 | ||||
| Large GABELLI FUNDS LLC | $51,200 | 0.22% | 20,000 | Shares | Sole | 2026-05-14 | ||||
| Mega JANE STREET GROUP, LLC | $48,896 | 0.21% | 19,100 | Call | Defined | 2026-05-12 | ||||
| Large Pathstone Holdings, LLC | $47,936 | 0.20% | 18,725 | Shares | Sole | 2026-05-11 | ||||
| Large COMMONWEALTH EQUITY SERVICES, LLC | $41,277 | 0.18% | 16,124 | Shares | Sole | 2026-04-27 | ||||
| Large HRT FINANCIAL LP | $38,581 | 0.16% | 15,071 | Shares | Defined | 2026-05-14 | ||||
| Mid IMC-Chicago, LLC | $34,944 | 0.15% | 13,650 | Shares | Sole | 2026-05-05 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $28,577 | 0.12% | 11,163 | Shares | Sole | 2026-05-07 | ||||
| Mid Tower Research Capital LLC (TRC) | $26,083 | 0.11% | 10,189 | Shares | Defined | 2026-05-15 | ||||
| Mid CITIZENS FINANCIAL GROUP INC/RI | $25,600 | 0.11% | 10,000 | Shares | Defined | 2026-05-01 | ||||
| Mega Vanguard Global Advisers, LLC | $13,911 | 0.06% | 5,434 | Shares | Defined | 2026-05-08 | ||||
| Large NewEdge Advisors, LLC | $11,312 | 0.05% | 4,419 | Shares | Sole | 2026-06-03 | ||||
| Mega ROYAL BANK OF CANADA Bank | $8,045 | 0.03% | 3,143 | Shares | Defined | 2026-05-15 | ||||
| Mid Advisory Services Network, LLC | $6,374 | 0.03% | 2,490 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $4,052 | 0.02% | 1,583 | Shares | Defined | 2026-05-13 | ||||
| Large Federation des caisses Desjardins du Quebec | $1,438 | 0.01% | 562 | Shares | Defined | 2026-05-14 | ||||
| Large NATIONAL BANK OF CANADA /FI/ Bank | $1,280 | 0.01% | 500 | Shares | Defined | 2026-05-15 | ||||
| Small State of Wyoming | $1,264 | 0.01% | 494 | Shares | Sole | 2026-05-13 | ||||
| Small Fortitude Family Office, LLC Family Office | $944 | 0.00% | 181 | Shares | Sole | 2026-07-20 | ||||
| Mid Bogart Wealth, LLC | $615 | 0.00% | 118 | Shares | Sole | 2026-07-24 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $574 | 0.00% | 110 | Shares | Defined | 2026-07-23 | ||||
| Mid MAI Capital Management | $163 | 0.00% | 64 | Shares | Sole | 2026-05-15 | ||||
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