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Mirion Technologies
MIR

224 hedge funds and large institutions have $3.38B invested in Mirion Technologies in 2024 Q4 according to their latest regulatory filings, with 75 funds opening new positions, 82 increasing their positions, 55 reducing their positions, and 23 closing their positions.

New
Increased
Maintained
Reduced
Closed

1,716% more call options, than puts

Call options by funds: $38.1M | Put options by funds: $2.1M

226% more first-time investments, than exits

New positions opened: 75 | Existing positions closed: 23

100% more funds holding in top 10

Funds holding in top 10: 3 → 6 (+3)

49% more repeat investments, than reductions

Existing positions increased: 82 | Existing positions reduced: 55

49% more capital invested

Capital invested by funds: $2.27B → $3.38B (+$1.11B)

27% more funds holding

Funds holding: 176 → 224 (+48)

5% less ownership

Funds ownership: 91% → 86% (-5%)

Holders
224
Holders Change
+48
Holders Change %
+27.27%
% of All Funds
2.95%
Holding in Top 10
6
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+100%
% of All Funds
0.08%
New
75
Increased
82
Reduced
55
Closed
23
Calls
$38.1M
Puts
$2.1M
Net Calls
+$36M
Net Calls Change
+$36.5M

Top Buyers

1
MC
Maverick Capital
Texas
+$93M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$65.2M
3
Brown Advisory
Brown Advisory
Maryland
+$59.1M
4
William Blair Investment Management
William Blair Investment Management
Illinois
+$47.2M
5
AIM
Artemis Investment Management
United Kingdom
+$33.9M

Top Sellers

1
Goldman Sachs
Goldman Sachs
New York
-$402M
2
Swedbank
Swedbank
Sweden
-$64.5M
3
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$62.9M
4
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$54M
5
AAM
ACK Asset Management
Connecticut
-$37.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$417M +$3.52M +227,178 +1%
T. Rowe Price Investment Management
2
T. Rowe Price Investment Management
Maryland
$356M +$3.35M +216,258 +1%
BlackRock
3
BlackRock
New York
$281M +$2M +129,141 +0.8%
Goldman Sachs
4
Goldman Sachs
New York
$155M -$402M -25,933,562 -75%
Janus Henderson Group
5
Janus Henderson Group
United Kingdom
$145M +$3.56M +229,718 +3%
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$125M +$2.67M +171,918 +2%
CLG
7
Cooperman Leon G
$123M -$15.5M -1,000,000 -12%
MC
8
Maverick Capital
Texas
$108M +$93M +5,994,184 +3,268%
Swedbank
9
Swedbank
Sweden
$106M -$64.5M -4,158,500 -41%
State Street
10
State Street
Massachusetts
$90.8M -$2.55M -164,636 -3%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$79.8M +$1.08M +69,373 +2%
Arrowstreet Capital
12
Arrowstreet Capital
Massachusetts
$73.6M +$65.2M +4,200,894 +29,949%
Brown Advisory
13
Brown Advisory
Maryland
$66.5M +$59.1M +3,812,024 New
Alyeska Investment Group
14
Alyeska Investment Group
Illinois
$65.6M -$62.9M -4,057,311 -52%
CCM
15
Corsair Capital Management
New York
$55.3M +$136K +8,770 +0.3%
Millennium Management
16
Millennium Management
New York
$54.2M +$24.1M +1,557,077 +101%
William Blair Investment Management
17
William Blair Investment Management
Illinois
$53.1M +$47.2M +3,041,016 New
American Century Companies
18
American Century Companies
Missouri
$41.6M -$22.1M -1,427,563 -37%
Lord, Abbett & Co
19
Lord, Abbett & Co
New Jersey
$41.3M +$15.2M +981,199 +71%
ACH
20
ArrowMark Colorado Holdings
Colorado
$41.3M -$9.79M -631,510 -21%
Select Equity Group
21
Select Equity Group
New York
$40.4M -$31.1M -2,004,285 -46%
AIM
22
Artemis Investment Management
United Kingdom
$38.2M +$33.9M +2,186,553 New
BCM
23
Bornite Capital Management
New York
$36.9M +$32.8M +2,117,000 New
Northern Trust
24
Northern Trust
Illinois
$35.6M +$5.09M +328,164 +19%
Fidelity International
25
Fidelity International
Bermuda
$35.1M -$7.75M -500,000 -20%
1
2 3 4 5

MIR Hedge Fund Activity: Q4 2024 in Review

224 of the 7,592 institutional investors tracked by Wall St. Rank reported a position in Mirion Technologies (MIR) for Q4 2024, worth a combined $3.38B — up 49% from $2.27B a quarter earlier.

Buyers outnumbered sellers: 75 funds opened new MIR positions and 23 closed out — a net gain of 52 holders — while 82 added to existing stakes and 55 trimmed.

The largest buyer was Maverick Capital, adding an estimated $93M. The largest seller was Goldman Sachs, cutting an estimated $402M.

  • 224 institutional investors held Mirion Technologies (MIR) as of Q4 2024, up from 176 in Q3 2024.
  • Funds reported $3.38B of Mirion Technologies stock for Q4 2024, up 49% quarter-over-quarter.
  • 75 funds opened new Mirion Technologies positions in Q4 2024 and 23 closed out, a net change of +52 holders.
  • The largest Mirion Technologies buyer in Q4 2024 was Maverick Capital, an estimated $93M added.
  • The largest Mirion Technologies seller in Q4 2024 was Goldman Sachs, an estimated $402M sold.

Based on aggregated 13F filings for Q4 2024.