Mirion Technologies, Inc. (MIR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

3,103,904Shares held by institutions

$53,790,656Value of institutional holdings

86.17%Institutional ownership %

5.57%Shares Changed QoQ

299No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Mirion Technologies, Inc. (NYSE:MIR) is held by 353 institutional investors per 13F filings through December 2025.

They owned 100.1% of outstanding stock in December 2025, down from 107.4% the prior quarter.
They increased total shares held in Mirion Technologies by 3.86% from last quarter, and the number of investors in MIR increased 58.3% annually.
During the quarter, 223 of these 353 funds increased positions in MIR, 93 reduced exposure, and 37 held steady.
In total, institutional investors held 255.79Mn shares in Mirion Technologies as of December 2025, up by 9.51Mn shares quarter on quarter, and up 58.14Mn shares year over year.
BlackRock, Inc. is the top holder of Mirion Technologies as of December 31, 2025, with 38.2Mn shares representing 14.94% of outstanding stock.
The most significant purchases of MIR for the quarter ending December 2025 came from Swedbank AB (2.79Mn), TCW GROUP INC (2.45Mn), BlackRock, Inc. (1.77Mn), Bank of New York Mellon Corp (1.72Mn), CITADEL ADVISORS LLC (1.43Mn).
The largest sales of MIR for the quarter ending December 2025 came from T. Rowe Price Investment Management, Inc. (4.12Mn), Janus Henderson Group Plc (3.06Mn), DIMENSIONAL FUND ADVISORS LP (2.1Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.73Mn), Alyeska Investment Group, L.P. (1.6Mn).
Per Business Quant, the top 10 investors in MIR for the quarter ending December 2025 include BlackRock, Inc. (38.2Mn), VANGUARD GROUP INC (30.35Mn), T. Rowe Price Investment Management, Inc. (17.44Mn), State Street Corp (9.2Mn), FMR LLC (8.41Mn), COOPERMAN LEON G (8.38Mn), Swedbank AB (6.8Mn), GEODE CAPITAL MANAGEMENT, LLC (5.79Mn), Goldman Sachs Group Inc (5.25Mn), UBS Group AG (4.85Mn).

353 Institutional Holders

3,103,904 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	1,769,477	4.86%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-71,999	-0.24%	$0.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	-4,124,785	-19.13%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	1,306,491	134.47%	$0.00
State Street Corp	31 Dec, 2025	382,449	4.34%	$0.00
UBS Group AG	31 Dec, 2025	55,754	1.16%	$0.00
Barclays Plc	31 Dec, 2025	-334,960	-47.25%	$0.00
FMR LLC	31 Dec, 2025	-664,001	-7.31%	$0.00
Two Creeks Capital Management, LP	31 Dec, 2025	-674,961	-18.76%	$0.00
PEAK6 LLC	31 Dec, 2025	13,948	0.00%	$0.00
COOPERMAN LEON G	31 Dec, 2025	0	0.00%	$0.00
Nuveen, LLC	31 Dec, 2025	423,209	26.62%	$0.00
Swedbank AB	31 Dec, 2025	2,791,200	69.69%	$0.00
Chescapmanager LLC	31 Dec, 2025	0	0.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	157,687	2.80%	$0.00
Goldman Sachs Group Inc	31 Dec, 2025	193,914	3.84%	$0.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	462,643	81.51%	$0.00
Janus Henderson Group Plc	31 Dec, 2025	-3,064,988	-40.00%	$0.00
Troluce Capital Advisors LLC	31 Dec, 2025	850,000	0.00%	$0.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	-2,104,375	-33.90%	$0.00

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