TECOGEN INC. - TGEN

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
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