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TGEN

Tecogen Inc
TGEN

65 hedge funds and large institutions have $37.6M invested in Tecogen Inc in 2025 Q4 according to their latest regulatory filings, with 15 funds opening new positions, 23 increasing their positions, 16 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed

59% more call options, than puts

Call options by funds: $2.57M | Put options by funds: $1.61M

44% more repeat investments, than reductions

Existing positions increased: 23 | Existing positions reduced: 16

0.5% less ownership

Funds ownership: 26.03% → 25.53% (-0.5%)

7% less funds holding

Funds holding: 70 → 65 (-5)

21% less first-time investments, than exits

New positions opened: 15 | Existing positions closed: 19

45% less capital invested

Capital invested by funds: $68M → $37.6M (-$30.4M)

100% less funds holding in top 10

Funds holding in top 10: 1 → 0 (-1)

Holders
65
Holders Change
-5
Holders Change %
-7.14%
% of All Funds
0.79%
Holding in Top 10
–
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-100%
% of All Funds
–
New
15
Increased
23
Reduced
16
Closed
19
Calls
$2.57M
Puts
$1.61M
Net Calls
+$958K
Net Calls Change
+$3.99M

Top Buyers

1
Marshall Wace
Marshall Wace
United Kingdom
+$1.78M
2
Jane Street
Jane Street
New York
+$859K
3
UBS Group
UBS Group
Switzerland
+$716K
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$630K
5
LPL Financial
LPL Financial
California
+$554K

Top Sellers

1
IWC
Integrated Wealth Concepts
Massachusetts
-$1.91M
2
ACA
Apis Capital Advisors
New York
-$1.35M
3
Citadel Advisors
Citadel Advisors
Florida
-$1.24M
4
PCM
Portolan Capital Management
Massachusetts
-$1.13M
5
Russell Investments Group
Russell Investments Group
United Kingdom
-$834K
Name Holding Trade Value Shares
Change 		Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$4.31M +$10.5K +1,400 +0.2%
BA
2
Bard Associates
Illinois
$3.4M -$11.3K -1,504 -0.2%
CHAM
3
Clear Harbor Asset Management
Connecticut
$3.01M -$12K -1,600 -0.3%
PCM
4
Portolan Capital Management
Massachusetts
$2.2M -$1.13M -149,996 -25%
HIM
5
Herald Investment Management
United Kingdom
$2.08M -$196K -26,078 -6%
PIP
6
Palisades Investment Partners
California
$1.93M +$102K +13,618 +4%
ACM
7
Arosa Capital Management
Florida
$1.73M +$469K +62,500 +22%
Susquehanna International Group
8
Susquehanna International Group
Pennsylvania
$1.5M +$382K +50,876 +20%
GJL
9
Gendell Jeffrey L
$1.46M +$390K +51,919 +21%
Marshall Wace
10
Marshall Wace
United Kingdom
$1.41M +$1.78M +237,236 +483%
Two Sigma Investments
11
Two Sigma Investments
New York
$1.08M -$211K -28,077 -11%
Jane Street
12
Jane Street
New York
$1.03M +$859K +114,497 +123%
BlackRock
13
BlackRock
New York
$945K +$49.4K +6,581 +4%
Geode Capital Management
14
Geode Capital Management
Massachusetts
$879K +$85.2K +11,357 +7%
GIM
15
Granahan Investment Management
Massachusetts
$878K +$491K +65,484 +58%
New York State Common Retirement Fund
16
New York State Common Retirement Fund
New York
$678K – – –
HighTower Advisors
17
HighTower Advisors
Illinois
$655K +$522K +69,598 +110%
TDC
18
Thompson Davis & Co
Virginia
$595K +$18.7K +2,497 +2%
UBS Group
19
UBS Group
Switzerland
$518K +$716K +95,371 +995%
Raymond James Financial
20
Raymond James Financial
Florida
$493K -$436K -58,134 -37%
Royal Bank of Canada
21
Royal Bank of Canada
Ontario, Canada
$423K -$277K -36,844 -30%
Point72 Asset Management
22
Point72 Asset Management
Connecticut
$415K +$630K +83,907 New
LPL Financial
23
LPL Financial
California
$365K +$554K +73,793 New
Morgan Stanley
24
Morgan Stanley
New York
$346K +$357K +47,593 +213%
State Street
25
State Street
Massachusetts
$342K -$3.75K -500 -0.7%
1
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TGEN Hedge Fund Activity: Q4 2025 in Review

65 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Tecogen Inc (TGEN) for Q4 2025, worth a combined $37.6M — down 45% from $68M a quarter earlier.

Sellers outnumbered buyers: 19 funds closed out of TGEN and 15 opened new positions — a net loss of 4 holders — while 16 trimmed existing stakes and 23 added.

The largest buyer was Marshall Wace, adding an estimated $1.78M. The largest seller was Integrated Wealth Concepts, exiting entirely with an estimated $1.91M sold.

  • 65 institutional investors held Tecogen Inc (TGEN) as of Q4 2025, down from 70 in Q3 2025.
  • Funds reported $37.6M of Tecogen Inc stock for Q4 2025, down 45% quarter-over-quarter.
  • 15 funds opened new Tecogen Inc positions in Q4 2025 and 19 closed out, a net change of -4 holders.
  • The largest Tecogen Inc buyer in Q4 2025 was Marshall Wace, an estimated $1.78M added.
  • The largest Tecogen Inc seller in Q4 2025 was Integrated Wealth Concepts, an estimated $1.91M sold.

Based on aggregated 13F filings for Q4 2025.