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THR

Thermon Group Holdings
THR

Delisted

THR was delisted on the 29th of May, 2026.

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168 hedge funds and large institutions have $905M invested in Thermon Group Holdings in 2025 Q2 according to their latest regulatory filings, with 29 funds opening new positions, 64 increasing their positions, 54 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

38% more first-time investments, than exits

New positions opened: 29 | Existing positions closed: 21

19% more repeat investments, than reductions

Existing positions increased: 64 | Existing positions reduced: 54

4% more funds holding

Funds holding: 161 → 168 (+7)

2.71% more ownership

Funds ownership: 94.38% → 97.08% (+2.7%)

2% more capital invested

Capital invested by funds: $886M → $905M (+$19.7M)

50% less funds holding in top 10

Funds holding in top 10: 4 → 2 (-2)

Holders
168
Holders Change
+7
Holders Change %
+4.35%
% of All Funds
2.21%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
29
Increased
64
Reduced
54
Closed
21
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
WHG
Westwood Holdings Group
Texas
+$35.5M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$5.76M
3
RC
RBF Capital
California
+$4.73M
4
CSS
Cubist Systematic Strategies
Connecticut
+$4.33M
5
MVP
Medina Value Partners
California
+$3.82M

Top Sellers

Rank Fund Capital Flow
1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$15.8M
2
Wellington Management Group
Wellington Management Group
Massachusetts
-$9.39M
3
Wells Fargo
Wells Fargo
California
-$8.34M
4
VLKIM
Van Lanschot Kempen Investment Management
Netherlands
-$7.35M
5
Invesco
Invesco
Georgia
-$5.84M
Name Holding Trade Value Shares
Change 		Change in
Stake
Arrowstreet Capital
26
Arrowstreet Capital
Massachusetts
$7.97M +$5.76M +212,578 +298%
MIM
27
Meros Investment Management
Texas
$7.94M +$988K +36,478 +15%
Morgan Stanley
28
Morgan Stanley
New York
$7.66M +$1.84M +68,092 +33%
JP Morgan Chase
29
JP Morgan Chase
New York
$7.42M +$337K +12,428 +5%
Royal Bank of Canada
30
Royal Bank of Canada
Ontario, Canada
$6.91M -$349K -12,893 -5%
HA
31
Heartland Advisors
Wisconsin
$6.5M -$57K -2,103 -0.9%
Goldman Sachs
32
Goldman Sachs
New York
$6.08M -$2.04M -75,229 -26%
LN
33
Lightrock Netherlands
Netherlands
$5.9M – – –
Ohio Public Employees Retirement System (OPERS)
34
Ohio Public Employees Retirement System (OPERS)
Ohio
$5.11M – – –
RC
35
RBF Capital
California
$4.91M +$4.73M +174,684 New
Qube Research & Technologies (QRT)
36
Qube Research & Technologies (QRT)
United Kingdom
$4.56M +$784K +28,925 +22%
CSS
37
Cubist Systematic Strategies
Connecticut
$4.49M +$4.33M +159,810 New
T. Rowe Price Associates
38
T. Rowe Price Associates
Maryland
$3.77M +$2.33M +86,096 +179%
Russell Investments Group
39
Russell Investments Group
United Kingdom
$3.7M +$295K +10,879 +9%
Assenagon Asset Management
40
Assenagon Asset Management
Luxembourg
$3.54M – – –
Millennium Management
41
Millennium Management
New York
$3.3M +$2.94M +108,400 +1,174%
Bank of New York Mellon
42
Bank of New York Mellon
New York
$3.26M +$164K +6,069 +6%
Jane Street
43
Jane Street
New York
$3.22M +$2.04M +75,393 +193%
Bank of America
44
Bank of America
North Carolina
$3.01M +$82.9K +3,060 +3%
William Blair & Company
45
William Blair & Company
Illinois
$2.99M -$2.5M -92,287 -46%
RHJA
46
Rice Hall James & Associates
California
$2.86M -$235K -8,662 -8%
UBS AM
47
UBS AM
Illinois
$2.81M +$793K +29,259 +41%
Diamond Hill Capital Management
48
Diamond Hill Capital Management
Ohio
$2.79M +$198K +7,323 +8%
Renaissance Technologies
49
Renaissance Technologies
New York
$2.78M -$133K -4,900 -5%
Wells Fargo
50
Wells Fargo
California
$2.4M -$8.34M -307,727 -78%
1
2
3 4 5

THR Hedge Fund Activity: Q2 2025 in Review

168 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Thermon Group Holdings (THR) for Q2 2025, worth a combined $905M — up 2.2% from $886M a quarter earlier.

Buyers outnumbered sellers: 29 funds opened new THR positions and 21 closed out — a net gain of 8 holders — while 64 added to existing stakes and 54 trimmed.

The largest buyer was Westwood Holdings Group, adding an estimated $35.5M. The largest seller was T. Rowe Price Investment Management, cutting an estimated $15.8M.

  • 168 institutional investors held Thermon Group Holdings (THR) as of Q2 2025, up from 161 in Q1 2025.
  • Funds reported $905M of Thermon Group Holdings stock for Q2 2025, up 2.2% quarter-over-quarter.
  • 29 funds opened new Thermon Group Holdings positions in Q2 2025 and 21 closed out, a net change of +8 holders.
  • The largest Thermon Group Holdings buyer in Q2 2025 was Westwood Holdings Group, an estimated $35.5M added.
  • The largest Thermon Group Holdings seller in Q2 2025 was T. Rowe Price Investment Management, an estimated $15.8M sold.

Based on aggregated 13F filings for Q2 2025.