13F Insight
DOSSIER · 13F Holders · Q4 2025High-convictionMulti-bagger
TGEN

TECOGEN INC NEW

63 institutions still hold TECOGEN INC NEW as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 87876P201·63 13F holders·last filed Dec 31, 2025
Market cap
—
▲ 3.3%
vs prior quarter
13F value held
$20M
73.0% inst. owned
of float
Holders
63
-32 QoQ
filers reporting
Activity
+50 / −6
+943 added · −879 reduced
this quarter
Concentration
10.98%
Portolan Capital Management, LLC #1
top holder share
AI Holders Summary · Q4 2025

63 institutions reported TGEN in Q4 2025. Portolan Capital Management, LLC leads at 11.0% of the visible book. -32 net institutions QoQ — distribution reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Portolan Capital Management, LLC
CIK 0001350290
$2M446K0.12%Q4 202502
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2M770K0.00%Q1 202603
BARD ASSOCIATES INC
CIK 0001105907
$2M688K0.44%Q1 202604
Clear Harbor Asset Management, LLC
CIK 0001511857
$2M650K0.11%Q1 202605
MARSHALL WACE, LLP
CIK 0001318757
$1M286K0.00%Q4 202506
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$1M481K0.00%Q1 202607
Herald Investment Management Ltd
CIK 0001512022
$1M420K0.15%Q1 202608
Arosa Capital Management LP
CIK 0001596053
$896,000350K0.14%Q1 202609
Palisades Investment Partners, LLC
CIK 0001427373
$854,802334K0.34%Q1 202610
WOLVERINE TRADING, LLC
CIK 0000927337
$839,000102K0.00%Q3 202511
UBS Group AG
CIK 0001610520
$818,781320K0.00%Q1 202612
CITADEL ADVISORS LLC
CIK 0001423053
$759,871154K0.00%Q4 202513
Meros Investment Management, LP
CIK 0001911372
$746,765292K0.32%Q1 202614
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$697,088272K0.00%Q1 202615
GENDELL JEFFREY L
CIK 0001056581
$628,585246K0.01%Q1 202616
Integrated Wealth Concepts LLC
CIK 0001737109
$559,053218K0.00%Q1 202617
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$491,827192K0.00%Q1 202618
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$489,324191K0.00%Q1 202619
RAYMOND JAMES FINANCIAL INC
CIK 0000720005
$475,633186K0.00%Q1 202620
BlackRock, Inc.
CIK 0002012383
$473,034185K0.00%Q1 2026
Page 1 of 4
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