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Mirion Technologies, Inc.

MIR
Exchange
NYSE
Industry
Measuring & Controlling Devices, NEC
SEC CIK
0001809987

In the last 90 days, Mirion Technologies, Inc. insiders filed 1 open-market purchase and 0 sales; 351 institutions reported holding it in 13F filings for Q2 2026, worth $4.70B in total; Maverick Capital is the only superinvestor holding it.

13F holders, Q4 2023

Institutional positions in Mirion Technologies, Inc. as of Dec 31, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
125
−1 vs. Q3 2023
Shares held
187.9M
−41.8K (0.0%) vs. Q3 2023
Total value
$1.93B
+$522.0M (+37.2%) vs. Q3 2023
New holders
14
48 more added
Sold out
15
44 more reduced

1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MIR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ4 2023: 125 institutions
Q1 2021: 0 institutionsQ2 2021: 1 institutionQ3 2021: 4 institutionsQ4 2021: 93 institutionsQ1 2022: 108 institutionsQ2 2022: 115 institutionsQ3 2022: 121 institutionsQ4 2022: 119 institutionsQ1 2023: 117 institutionsQ2 2023: 124 institutionsQ3 2023: 127 institutionsQ4 2023: 125 institutionsQ1 2024: 143 institutionsQ2 2024: 155 institutionsQ3 2024: 176 institutionsQ4 2024: 224 institutionsQ1 2025: 230 institutionsQ2 2025: 302 institutionsQ3 2025: 343 institutionsQ4 2025: 365 institutionsQ1 2026: 362 institutionsQ2 2026: 351 institutions
Value heldQ4 2023: $1.93B
Q1 2021: $0Q2 2021: $20.8KQ3 2021: $16.4MQ4 2021: $1.52BQ1 2022: $1.20BQ2 2022: $921.8MQ3 2022: $1.27BQ4 2022: $1.01BQ1 2023: $1.45BQ2 2023: $1.53BQ3 2023: $1.40BQ4 2023: $1.93BQ1 2024: $2.14BQ2 2024: $2.12BQ3 2024: $2.27BQ4 2024: $3.38BQ1 2025: $2.69BQ2 2025: $4.46BQ3 2025: $5.93BQ4 2025: $5.91BQ1 2026: $4.71BQ2 2026: $4.70B
Institutions holding MIR and their total value by quarter
QuarterHoldersValue
Q2 2026351$4.70B
Q1 2026362$4.71B
Q4 2025365$5.91B
Q3 2025343$5.93B
Q2 2025302$4.46B
Q1 2025230$2.69B
Q4 2024224$3.38B
Q3 2024176$2.27B
Q2 2024155$2.12B
Q1 2024143$2.14B
Q4 2023125$1.93B
Q3 2023127$1.40B
Q2 2023124$1.53B
Q1 2023117$1.45B
Q4 2022119$1.01B
Q3 2022121$1.27B
Q2 2022115$921.8M
Q1 2022108$1.20B
Q4 202193$1.52B
Q3 20214$16.4M
Q2 20211$20.8K
Q1 20210$0

Institutions, Q4 2023

Shares, value and share of portfolio for each institution holding Mirion Technologies, Inc.; share changes are against Q3 2023.

Institutions holding MIR in Q4 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Truist Financial Corp12,335$126.4K0.00%00.0%Unchanged
Xponance, Inc.12,070$123.7K0.00%+272+2.3%Added
Metropolitan Life Insurance Co11,635$119.3K0.01%00.0%Unchanged
Teza Capital Management LLC11,116$113.9K0.02%+11,116New
Landscape Capital Management, L.L.C.10,557$108.2K0.01%+10,557New
Cipher Capital LP10,076$103.3K0.03%−54−0.5%Reduced
Nisa Investment Advisors, LLC2,120$21.7K0.00%−1,430−40.3%Reduced
Parallel Advisors, LLC1,611$16.5K0.00%+1,517+1,613.8%Added
Advisor Group Holdings, Inc.1,250$12.8K0.00%00.0%Unchanged
Bank of Montreal1,173$12.3K0.00%+1,173New
Quadrant Capital Group LLC773$7.92K0.00%+489+172.2%Added
Comerica Bank630$6.46K0.00%+325+106.6%Added
Albion Financial Group300$3.08K0.00%00.0%Unchanged
Cutler Group LP229$2.00K0.00%00.0%Unchanged
Lindbrook Capital, LLC161$1.65K0.00%+161New
The PNC Financial Services Group, Inc.150$1.54K0.00%00.0%Unchanged
Allworth Financial LP115$1.18K0.00%+115New
FNY Investment Advisers, LLC150$1.00K0.00%−20−11.8%Reduced
Ronald Blue Trust, Inc.146$1.00K0.00%00.0%Unchanged
Bell Investment Advisors, Inc62$6360.00%00.0%Unchanged
JFS Wealth Advisors, LLC47$4820.00%+4+9.3%Added
FinTrust Capital Advisors, LLC25$2570.00%+25New
AdvisorNet Financial, Inc19$1950.00%+2+11.8%Added
SJS Investment Consulting Inc.17$1750.00%+2+13.3%Added
Covestor Ltd15$00.00%−1−6.3%Reduced
Bpifrance SA0$00.00%−1,286,446−100.0%Sold out
Barrow Hanley Mewhinney & Strauss LLC0$00.00%−922,550−100.0%Sold out
Sculptor Capital LP0$00.00%−409,405−100.0%Sold out
Arrowstreet Capital, Limited Partnership0$00.00%−178,575−100.0%Sold out
Squarepoint Ops LLC0$00.00%−171,298−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−35,171−100.0%Sold out
Versor Investments LP0$00.00%−24,700−100.0%Sold out
Jump Financial, LLC0$00.00%−19,722−100.0%Sold out
Walleye Trading LLC0$00.00%−18,213−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−16,149−100.0%Sold out
Oppenheimer & Co Inc0$00.00%−13,900−100.0%Sold out
Teacher Retirement System of Texas0$00.00%−13,472−100.0%Sold out
Schonfeld Strategic Advisors LLC0$00.00%−11,000−100.0%Sold out
Simplex Trading, LLC0$00.00%−8,053−100.0%Sold out
Allspring Global Investments Holdings, LLC0$00.00%−5,958−100.0%Sold out
Steward Financial Group LLC––––Not filed