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Mirion Technologies
MIR

Overview Fund Activity

299 hedge funds and large institutions have $4.46B invested in Mirion Technologies in 2025 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 115 increasing their positions, 62 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
299
Holders Change
+70
Holders Change %
+30.57%
% of All Funds
4.01%
Holding in Top 10
6
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-14.29%
% of All Funds
0.08%
New
100
Increased
115
Reduced
62
Closed
29
Calls
$72.9M
Puts
$50.8M
Net Calls
+$22.1M
Net Calls Change
+$5.79M

Top Buyers

1
Massachusetts Financial Services
Massachusetts Financial Services
Massachusetts
+$82.5M
2
Invesco
Invesco
Georgia
+$49.4M
3
DCM
Driehaus Capital Management
Illinois
+$43.2M
4
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$34.8M
5
Loomis, Sayles & Company
Loomis, Sayles & Company
Massachusetts
+$34.3M

Top Sellers

1
MC
Maverick Capital
Texas
-$59.2M
2
Swedbank
Swedbank
Sweden
-$27.1M
3
William Blair Investment Management
William Blair Investment Management
Illinois
-$15.6M
4
ACM
Arosa Capital Management
Florida
-$14.8M
5
MCM
Masters Capital Management
Georgia
-$14.5M
Name Holding Trade Value Shares
Change 		Shares
Change %
Lazard Asset Management
101
Lazard Asset Management
New York
$4.69M +$566K +26,276 +14%
EI
102
EAM Investors
California
$4.5M +$4.5M +208,974 New
California State Teachers Retirement System (CalSTRS)
103
California State Teachers Retirement System (CalSTRS)
California
$4.38M +$560K +25,999 +15%
CCM
104
Candelo Capital Management
New York
$4.37M +$4.37M +203,161 New
First Trust Advisors
105
First Trust Advisors
Illinois
$4.09M -$2.74M -127,372 -40%
ETC
106
Exchange Traded Concepts
Oklahoma
$3.91M +$1.02M +47,468 +35%
ACM
107
Arosa Capital Management
Florida
$3.88M -$14.8M -687,988 -79%
T. Rowe Price Associates
108
T. Rowe Price Associates
Maryland
$3.64M +$409K +19,015 +13%
Balyasny Asset Management
109
Balyasny Asset Management
Illinois
$3.6M +$69.2K +3,213 +2%
RC
110
Roubaix Capital
Colorado
$3.58M -$4.58M -212,751 -56%
JG
111
Jain Global
New York
$3.51M +$3.51M +162,968 New
State of Wisconsin Investment Board
112
State of Wisconsin Investment Board
Wisconsin
$3.31M +$915K +42,511 +38%
LCM
113
Legato Capital Management
California
$3.24M +$312K +14,514 +11%
SC
114
SummitTX Capital
Texas
$3.23M +$3.23M +150,000 New
BNP Paribas Financial Markets
115
BNP Paribas Financial Markets
France
$3.19M +$2.91M +134,948 +1,004%
Nomura Holdings
116
Nomura Holdings
Japan
$3.06M +$3.06M +141,946 New
Pathstone Holdings
117
Pathstone Holdings
New Jersey
$2.98M +$838K +38,919 +39%
New York State Common Retirement Fund
118
New York State Common Retirement Fund
New York
$2.87M +$348K +16,153 +14%
NICM
119
Neo Ivy Capital Management
New York
$2.85M +$2.85M +132,188 New
IIM
120
INTECH Investment Management
Florida
$2.75M – – –
MIM
121
MetLife Investment Management
New Jersey
$2.7M +$61.4K +2,852 +2%
MP
122
Munro Partners
Australia
$2.62M +$2.62M +121,875 New
Simplex Trading
123
Simplex Trading
Illinois
$2.56M +$1.88M +87,579 +279%
Renaissance Technologies
124
Renaissance Technologies
New York
$2.5M -$11.4M -527,800 -82%
Principal Financial Group
125
Principal Financial Group
Iowa
$2.48M +$2.18M +101,301 +721%
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5
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