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 		$588K Sell
32,796
-1,790,456
-98% -$33.2M ﹤0.01% 9472
2026
Q1 		$33.9M Buy
1,823,252
+202,459
+12% +$4.57M 0.01% 1731
2025
Q4 		$38M Buy
1,620,793
+1,430,949
+754% +$35.7M 0.01% 1672
2025
Q3 		$4.42M Sell
189,844
-261,630
-58% -$5.66M ﹤0.01% 4578
2025
Q2 		$9.72M Sell
451,474
-457,778
-50% -$7.89M ﹤0.01% 3064
2025
Q1 		$13.2M Buy
909,252
+798,015
+717% +$12.5M ﹤0.01% 2516
2024
Q4 		$1.94M Buy
111,237
+87,975
+378% +$1.36M ﹤0.01% 5694
2024
Q3 		$258K Buy
+23,262
New +$245K ﹤0.01% 9614
2024
Q2 		– Sell
-60,340
Closed -$641K – 14981
2024
Q1 		$686K Buy
60,340
+10,004
+20% +$100K ﹤0.01% 7709
2023
Q4 		$516K Sell
50,336
-387,567
-89% -$3.27M ﹤0.01% 8032
2023
Q3 		$3.27M Buy
437,903
+426,054
+3,596% +$3.36M ﹤0.01% 4335
2023
Q2 		$100K Buy
+11,849
New +$96.1K ﹤0.01% 10936
2023
Q1 		– Sell
-5,496
Closed -$43.6K – 15179
2022
Q4 		$36.3K Buy
+5,496
New +$37K ﹤0.01% 12524
2022
Q2 		– Sell
-368,946
Closed -$2.71M – 13631
2022
Q1 		$2.98M Buy
368,946
+262,497
+247% +$2.26M ﹤0.01% 5204
2021
Q4 		$1.11M Sell
106,449
-2,710,973
-96% -$29.1M ﹤0.01% 7686
2021
Q3 		$28.8M Buy
2,817,422
+2,382,129
+547% +$24M 0.01% 1603
2021
Q2 		$4.53M Sell
435,293
-13,963
-3% -$144K ﹤0.01% 4652
2021
Q1 		$4.69M Buy
449,256
+330,445
+278% +$3.88M ﹤0.01% 4390
2020
Q4 		$1.29M Buy
+118,811
New +$1.23M ﹤0.01% 6247

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 #9472.

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 #9472 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.