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Mirion Technologies
MIR

Overview Fund Activity

295 hedge funds and large institutions have $4.42B invested in Mirion Technologies in 2025 Q2 according to their latest regulatory filings, with 99 funds opening new positions, 114 increasing their positions, 61 reducing their positions, and 29 closing their positions.

Holders
295
Holders Change
+66
Holders Change %
+28.82%
% of All Funds
3.96%
Holding in Top 10
6
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-14.29%
% of All Funds
0.08%
New
99
Increased
114
Reduced
61
Closed
29
Calls
$55.7M
Puts
$40.9M
Net Calls
+$14.8M
Net Calls Change
-$1.49M

Top Buyers

1
Massachusetts Financial Services
1
Massachusetts Financial Services
Massachusetts
$82.5M
2
Invesco
2
Invesco
Georgia
$56.3M
3
DCM
3
Driehaus Capital Management
Illinois
$43.2M
4
Royal Bank of Canada
4
Royal Bank of Canada
Ontario, Canada
$36.9M
5
Loomis, Sayles & Company
5
Loomis, Sayles & Company
Massachusetts
$34.3M

Top Sellers

1
MC
1
Maverick Capital
Texas
$114M
2
Swedbank
2
Swedbank
Sweden
$88.8M
3
William Blair Investment Management
3
William Blair Investment Management
Illinois
$21.7M
4
ACM
4
Arosa Capital Management
Florida
$3.88M
5
MCM
5
Masters Capital Management
Georgia
$0
Name Market Value Shares Shares
Change 		Shares
Change %
ZIM
76
Zacks Investment Management
Illinois
$8.17M 379,461 +379,461 New
SEI Investments
77
SEI Investments
Pennsylvania
$7.56M 351,039 +157,300 +81%
AI
78
Aperture Investors
New York
$7.43M 345,000 -12,367 -3%
Verition Fund Management
79
Verition Fund Management
Connecticut
$7.22M 335,443 +134,037 +67%
RhumbLine Advisers
80
RhumbLine Advisers
Massachusetts
$6.86M 318,602 +11,180 +4%
AQR Capital Management
81
AQR Capital Management
Connecticut
$6.72M 312,260 +113,049 +57%
EIM
82
Essex Investment Management
Massachusetts
$6.46M 299,816 -2,057 -0.7%
Wells Fargo
83
Wells Fargo
California
$6.45M 299,657 +8,528 +3%
SSA
84
Schonfeld Strategic Advisors
New York
$5.99M 278,376 +29,407 +12%
RHJA
85
Rice Hall James & Associates
California
$5.81M 269,823 -283 -0.1%
Deutsche Bank
86
Deutsche Bank
Germany
$5.7M 264,877 +3,700 +1%
Ameriprise
87
Ameriprise
Minnesota
$5.6M 260,205 +148,596 +133%
Citigroup
88
Citigroup
New York
$5.54M 257,101 +91,236 +55%
HBWM
89
Hollow Brook Wealth Management
New York
$5.51M 255,916 -826 -0.3%
Legal & General Group
90
Legal & General Group
United Kingdom
$5.23M 242,824 +9,095 +4%
Jane Street
91
Jane Street
New York
$5.2M 241,544 -86,640 -26%
Universal-Beteiligungs- und Servicegesellschaft
92
Universal-Beteiligungs- und Servicegesellschaft
Germany
$5.18M 240,549 +216,360 +894%
SMDAM
93
Sumitomo Mitsui DS Asset Management
Japan
$5.09M 236,340 +148,619 +169%
EGI
94
EAM Global Investors
California
$5.08M 236,179 +236,179 New
Envestnet Asset Management
95
Envestnet Asset Management
Illinois
$5.02M 232,996 +55,028 +31%
RS
96
Robeco Schweiz
Switzerland
$4.95M 230,000 +230,000 New
AllianceBernstein
97
AllianceBernstein
Tennessee
$4.94M 229,462 +10,132 +5%
Lazard Asset Management
98
Lazard Asset Management
New York
$4.69M 218,031 +26,276 +14%
EI
99
EAM Investors
California
$4.5M 208,974 +208,974 New
California State Teachers Retirement System (CalSTRS)
100
California State Teachers Retirement System (CalSTRS)
California
$4.38M 203,402 +25,999 +15%
2 3
4
5 6