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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 %
RA
51
Royce & Associates
New York
$17M 790,094 +121,451 +18%
TG
52
TCW Group
California
$15.7M 731,465 +731,465 New
Bank of New York Mellon
53
Bank of New York Mellon
New York
$14.4M 669,301 +163 +0%
Franklin Resources
54
Franklin Resources
California
$14.4M 668,159 +668,159 New
Goldman Sachs
55
Goldman Sachs
New York
$13.7M 638,261 +58,617 +10%
Ensign Peak Advisors
56
Ensign Peak Advisors
Utah
$12.9M 601,248 +105,101 +21%
TCA
57
Troluce Capital Advisors
Puerto Rico
$12.9M 600,000 +600,000 New
GI
58
GAMCO Investors
Connecticut
$12.1M 562,074 -30,053 -5%
Fidelity International
59
Fidelity International
Bermuda
$12.1M 560,893 -250,000 -31%
SRFM
60
Shannon River Fund Management
New York
$12M 555,377 +555,377 New
EMFAT
61
Emerald Mutual Fund Advisers Trust
Pennsylvania
$11.9M 553,624 +46,508 +9%
Allspring Global Investments
62
Allspring Global Investments
North Carolina
$11.4M 556,362 -39,738 -7%
GF
63
Gabelli Funds
New York
$11M 511,314 -12,936 -2%
TAM
64
Telemark Asset Management
Massachusetts
$10.8M 500,000 – –
Qube Research & Technologies (QRT)
65
Qube Research & Technologies (QRT)
United Kingdom
$9.99M 463,977 -186,230 -29%
AAP
66
Ardsley Advisory Partners
Connecticut
$9.97M 463,220 +288,220 +165%
NIP
67
Nicholas Investment Partners
California
$9.9M 459,864 +92,608 +25%
Citadel Advisors
68
Citadel Advisors
Florida
$9.72M 451,474 -457,778 -50%
TD Asset Management
69
TD Asset Management
Ontario, Canada
$9.27M 430,758 +15,724 +4%
KCM
70
Kingdon Capital Management
New York
$9.15M 425,000 -25,000 -6%
CCS
71
Concentric Capital Strategies
Connecticut
$8.88M 412,460 +412,460 New
Barclays
72
Barclays
United Kingdom
$8.86M 411,509 +157,969 +62%
Swiss National Bank
73
Swiss National Bank
Switzerland
$8.8M 408,800 +15,600 +4%
MCM
74
Moore Capital Management
New York
$8.77M 407,413 +407,413 New
AI
75
Axiom Investors
Connecticut
$8.45M 392,685 +392,685 New
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