Citadel Advisors
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Citadel Advisors’s Mirion Technologies MIR Stock Holding History

Citadel Advisors’s Portfolio MIR Stock Details MIR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$7.06M Buy
394,000
+184,600
+88% +$3.42M ﹤0.01% 4140
2026
Q1 		$3.89M Sell
209,400
-83,300
-28% -$1.88M ﹤0.01% 4765
2025
Q4 		$6.86M Buy
292,700
+188,400
+181% +$4.7M ﹤0.01% 3799
2025
Q3 		$2.43M Buy
104,300
+56,400
+118% +$1.22M ﹤0.01% 5673
2025
Q2 		$1.03M Sell
47,900
-19,200
-29% -$331K ﹤0.01% 7017
2025
Q1 		$973K Buy
67,100
+36,000
+116% +$566K ﹤0.01% 7020
2024
Q4 		$543K Buy
31,100
+29,400
+1,729% +$456K ﹤0.01% 8369
2024
Q3 		$18.8K Sell
1,700
-1,000
-37% -$10.5K ﹤0.01% 12820
2024
Q2 		$29K Sell
2,700
-49,000
-95% -$521K ﹤0.01% 12308
2024
Q1 		$588K Sell
51,700
-101,900
-66% -$1.02M ﹤0.01% 8029
2023
Q4 		$1.57M Sell
153,600
-1,400
-0.9% -$11.8K ﹤0.01% 5801
2023
Q3 		$1.16M Sell
155,000
-52,100
-25% -$411K ﹤0.01% 6272
2023
Q2 		$1.75M Sell
207,100
-57,000
-22% -$463K ﹤0.01% 5391
2023
Q1 		$2.26M Buy
264,100
+126,900
+92% +$1.01M ﹤0.01% 5137
2022
Q4 		$907K Sell
137,200
-60,000
-30% -$404K ﹤0.01% 6994
2022
Q3 		$1.47M Buy
197,200
+100,100
+103% +$705K ﹤0.01% 6195
2022
Q2 		$559K Sell
97,100
-46,200
-32% -$340K ﹤0.01% 8403
2022
Q1 		$1.16M Sell
143,300
-112,400
-44% -$968K ﹤0.01% 7377
2021
Q4 		$2.68M Buy
255,700
+28,800
+13% +$309K ﹤0.01% 5560
2021
Q3 		$2.32M Sell
226,900
-55,800
-20% -$563K ﹤0.01% 5974
2021
Q2 		$2.94M Sell
282,700
-278,800
-50% -$2.87M ﹤0.01% 5653
2021
Q1 		$5.86M Buy
+561,500
New +$6.59M ﹤0.01% 3917

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return

Citadel Advisors's MIR Position: Q2 2026 in Review

Citadel Advisors reduced its Mirion Technologies (MIR) stake by 98% in Q2 2026, selling an estimated $33.2M and leaving 32,796 shares worth $588K. The position accounts for ﹤0.01% of the portfolio, ranked #9469.

Citadel Advisors first reported a position in MIR in Q4 2020 and has held it in 19 quarters since. The position peaked at $38M in Q4 2025. 351 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Citadel Advisors held 32,796 shares of Mirion Technologies worth $588K as of Q2 2026.
  • Citadel Advisors sold 1,790,456 Mirion Technologies shares in Q2 2026, an estimated $33.2M.
  • Mirion Technologies made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #9469 holding.
  • Citadel Advisors first reported a position in Mirion Technologies in Q4 2020 and has held it in 19 quarters since.
  • Citadel Advisors's Mirion Technologies position peaked at $38M in Q4 2025.
  • 351 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.