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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
Goldman Sachs
26
Goldman Sachs
New York
$335K -$488K -65,038 -49%
PI
27
PFG Investments
New York
$309K – – –
MP
28
Mangrove Partners
Connecticut
$302K +$459K +61,207 New
Group One Trading
29
Group One Trading
Illinois
$279K +$170K +22,626 +67%
CCM
30
Corsair Capital Management
New York
$272K +$128 +17 +0%
XT
31
XTX Topco
Cayman Islands
$271K +$411K +54,763 New
Renaissance Technologies
32
Renaissance Technologies
New York
$268K -$360K -47,900 -47%
DC
33
Diametric Capital
Massachusetts
$263K +$169K +22,486 +73%
Citadel Advisors
34
Citadel Advisors
Florida
$242K -$1.24M -164,788 -77%
Simplex Trading
35
Simplex Trading
Illinois
$230K +$112K +14,969 +47%
IMC Chicago
36
IMC Chicago
Illinois
$212K +$322K +42,955 New
OAC
37
OMERS Administration Corp
Ontario, Canada
$207K +$315K +42,000 New
HCA
38
Harbor Capital Advisors
Illinois
$200K +$97.3K +12,966 +47%
GI
39
GAMCO Investors
Connecticut
$198K – – –
Northern Trust
40
Northern Trust
Illinois
$186K +$89.6K +11,944 +46%
JWCA
41
J.W. Cole Advisors
Florida
$130K -$38.3K -5,100 -16%
BCM
42
Bridgeway Capital Management
Texas
$126K – – –
QT
43
Quantbot Technologies
New York
$113K +$171K +22,820 New
Millennium Management
44
Millennium Management
New York
$111K -$193K -25,738 -53%
HCWM
45
Hidden Cove Wealth Management
Washington
$104K +$52.9K +7,045 +50%
GCP
46
GSA Capital Partners
United Kingdom
$96K +$146K +19,432 New
Pathstone Holdings
47
Pathstone Holdings
New Jersey
$92.5K – – –
AWA
48
Ark Wealth Advisors
California
$73.5K +$112K +14,881 New
SAM
49
Shikiar Asset Management
New York
$66K -$39K -5,200 -28%
Charles Schwab
50
Charles Schwab
California
$59.3K – – –
1
2
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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.