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Mirion Technologies
MIR

125 hedge funds and large institutions have $1.94B invested in Mirion Technologies in 2023 Q4 according to their latest regulatory filings, with 14 funds opening new positions, 49 increasing their positions, 43 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed

1,120% more call options, than puts

Call options by funds: $28.2M | Put options by funds: $2.31M

38% more capital invested

Capital invested by funds: $1.4B → $1.94B (+$538M)

14% more repeat investments, than reductions

Existing positions increased: 49 | Existing positions reduced: 43

0.7% more ownership

Funds ownership: 86.22% → 86.92% (+0.7%)

0% more funds holding in top 10

Funds holding in top 10: 3 → 3 (0)

7% less first-time investments, than exits

New positions opened: 14 | Existing positions closed: 15

2% less funds holding

Funds holding: 127 → 125 (-2)

Holders
125
Holders Change
-2
Holders Change %
-1.57%
% of All Funds
1.82%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
14
Increased
49
Reduced
43
Closed
15
Calls
$28.2M
Puts
$2.31M
Net Calls
+$25.9M
Net Calls Change
+$10.2M

Top Buyers

Rank Fund Capital Flow
1
Select Equity Group
Select Equity Group
New York
+$16M
2
Morgan Stanley
Morgan Stanley
New York
+$13M
3
BlackRock
BlackRock
New York
+$9.22M
4
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$9.05M
5
Janus Henderson Group
Janus Henderson Group
United Kingdom
+$5.67M

Top Sellers

Rank Fund Capital Flow
1
B
Bpifrance
France
-$9.61M
2
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$9.41M
3
Swedbank
Swedbank
Sweden
-$7.28M
4
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss
Texas
-$6.89M
5
PA
Pantechnicon Advisors
United Kingdom
-$5.57M
Name Holding Trade Value Shares
Change 		Change in
Stake
PA
26
Pantechnicon Advisors
United Kingdom
$12.3M -$5.57M -660,000 -35%
CWM
27
CIBC World Markets
New York
$11M +$2.53M +300,000 +39%
Adage Capital Partners
28
Adage Capital Partners
Massachusetts
$9.64M +$1.46M +173,027 +23%
CM
29
Crestline Management
Texas
$9.22M -$4.22M -500,000 -36%
GI
30
GAMCO Investors
Connecticut
$7.99M -$139K -16,450 -2%
Bank of New York Mellon
31
Bank of New York Mellon
New York
$7.92M +$465K +55,077 +8%
GF
32
Gabelli Funds
New York
$7.34M -$101K -11,960 -2%
CC
33
Carlson Capital
Texas
$5.53M -$210K -24,875 -4%
Citigroup
34
Citigroup
New York
$4.54M -$516K -61,166 -12%
UBS Group
35
UBS Group
Switzerland
$3.79M +$1.98M +234,970 +175%
Swiss National Bank
36
Swiss National Bank
Switzerland
$3.52M -$334K -39,600 -10%
JP Morgan Chase
37
JP Morgan Chase
New York
$3.47M +$848K +100,437 +42%
TD Asset Management
38
TD Asset Management
Ontario, Canada
$3.44M – – –
RC
39
Roubaix Capital
Colorado
$3.44M -$1.4M -165,957 -33%
PCM
40
Pentwater Capital Management
Florida
$3.43M -$2.05M -243,186 -42%
RhumbLine Advisers
41
RhumbLine Advisers
Massachusetts
$3.32M +$43.4K +5,144 +2%
Barclays
42
Barclays
United Kingdom
$3.18M +$2.05M +242,682 +361%
Invesco
43
Invesco
Georgia
$2.89M +$666K +78,894 +39%
First Trust Advisors
44
First Trust Advisors
Illinois
$2.65M +$2.18M +258,781 New
EIM
45
Essex Investment Management
Massachusetts
$2.65M -$9.61K -1,139 -0.4%
M&T Bank
46
M&T Bank
New York
$2.53M +$47.3K +5,602 +2%
RA
47
Royce & Associates
New York
$2.31M – – –
AllianceBernstein
48
AllianceBernstein
Tennessee
$2.25M -$25.6K -3,037 -1%
UBS AM
49
UBS AM
Illinois
$2.05M +$446K +52,801 +36%
Jane Street
50
Jane Street
New York
$1.98M +$1.39M +164,793 +578%
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MIR Hedge Fund Activity: Q4 2023 in Review

125 of the 6,859 institutional investors tracked by Wall St. Rank reported a position in Mirion Technologies (MIR) for Q4 2023, worth a combined $1.94B — up 38% from $1.4B a quarter earlier.

Sellers outnumbered buyers: 15 funds closed out of MIR and 14 opened new positions — a net loss of 1 holder — while 43 trimmed existing stakes and 49 added.

The largest buyer was Select Equity Group, adding an estimated $16M. The largest seller was Bpifrance, exiting entirely with an estimated $9.61M sold.

  • 125 institutional investors held Mirion Technologies (MIR) as of Q4 2023, down from 127 in Q3 2023.
  • Funds reported $1.94B of Mirion Technologies stock for Q4 2023, up 38% quarter-over-quarter.
  • 14 funds opened new Mirion Technologies positions in Q4 2023 and 15 closed out, a net change of -1 holder.
  • The largest Mirion Technologies buyer in Q4 2023 was Select Equity Group, an estimated $16M added.
  • The largest Mirion Technologies seller in Q4 2023 was Bpifrance, an estimated $9.61M sold.

Based on aggregated 13F filings for Q4 2023.