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Mirion Technologies
MIR

Overview Fund Activity

296 hedge funds and large institutions have $4.42B invested in Mirion Technologies in 2025 Q2 according to their latest regulatory filings, with 100 funds opening new positions, 114 increasing their positions, 61 reducing their positions, and 29 closing their positions.

Holders
296
Holders Change
+67
Holders Change %
+29.26%
% of All Funds
3.98%
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
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 %
Vanguard Group
1
Vanguard Group
Pennsylvania
$512M 23,766,592 +508,544 +2%
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$451M 20,957,520 +247,131 +1%
BlackRock
3
BlackRock
New York
$366M 17,012,641 +872,717 +5%
Janus Henderson Group
4
Janus Henderson Group
United Kingdom
$172M 7,988,396 -599,268 -7%
CLG
5
Cooperman Leon G
$153M 7,125,000 +100,000 +1%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$150M 6,947,380 -416,574 -6%
Brown Advisory
7
Brown Advisory
Maryland
$116M 5,400,405 -160,056 -3%
MC
8
Maverick Capital
Texas
$114M 5,308,038 -2,748,071 -34%
State Street
9
State Street
Massachusetts
$110M 5,094,072 -45,497 -0.9%
Geode Capital Management
10
Geode Capital Management
Massachusetts
$102M 4,739,240 +471 +0%
Alyeska Investment Group
11
Alyeska Investment Group
Illinois
$95.7M 4,446,853 +296,591 +7%
Swedbank
12
Swedbank
Sweden
$88.8M 4,126,035 -1,260,965 -23%
Massachusetts Financial Services
13
Massachusetts Financial Services
Massachusetts
$82.5M 3,833,668 +3,833,668 New
American Century Companies
14
American Century Companies
Missouri
$72.6M 3,373,352 -59,462 -2%
AIM
15
Artemis Investment Management
United Kingdom
$65.2M 3,028,968 +30,533 +1%
CCM
16
Corsair Capital Management
New York
$65.1M 3,025,412 -46,591 -2%
Millennium Management
17
Millennium Management
New York
$62M 2,881,947 +314,287 +12%
Invesco
18
Invesco
Georgia
$56.3M 2,617,252 +2,295,414 +713%
Lord, Abbett & Co
19
Lord, Abbett & Co
New Jersey
$53M 2,459,638 +59,774 +2%
Arrowstreet Capital
20
Arrowstreet Capital
Massachusetts
$49.1M 2,281,180 -508,329 -18%
BCM
21
Bornite Capital Management
New York
$44.2M 2,051,700 -12,600 -0.6%
Select Equity Group
22
Select Equity Group
New York
$43.7M 2,027,559 -264,677 -12%
DCM
23
Driehaus Capital Management
Illinois
$43.2M 2,007,888 +2,007,888 New
Raymond James Financial
24
Raymond James Financial
Florida
$42.5M 1,972,536 +254,688 +15%
Northern Trust
25
Northern Trust
Illinois
$41.6M 1,932,856 -38,326 -2%
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