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David Shaw’s Mirion Technologies MIR Stock Holding History

David Shaw’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 		$7.18M Sell
400,454
-67,683
-14% -$1.26M ﹤0.01% 2117
2026
Q1 		$8.7M Sell
468,137
-161,038
-26% -$3.63M 0.01% 1754
2025
Q4 		$14.7M Sell
629,175
-610,386
-49% -$15.2M 0.01% 1443
2025
Q3 		$28.8M Buy
1,239,561
+272,106
+28% +$5.88M 0.02% 938
2025
Q2 		$20.8M Buy
967,455
+515,838
+114% +$8.89M 0.01% 1009
2025
Q1 		$6.55M Buy
451,617
+132,073
+41% +$2.08M 0.01% 1703
2024
Q4 		$5.58M Buy
+319,544
New +$4.96M ﹤0.01% 1882
2022
Q3 		– Sell
-15,418
Closed -$89K – 5389
2022
Q2 		$89K Buy
+15,418
New +$113K ﹤0.01% 4751
2021
Q4 		– Sell
-1,306,800
Closed -$13.4M – 5582
2021
Q3 		$13.4M Buy
1,306,800
+1,246,800
+2,078% +$12.6M 0.01% 1300
2021
Q2 		$624K Buy
+60,000
New +$617K ﹤0.01% 3915

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
California State Teachers Retirement System (CalSTRS)
California State Teachers Retirement System (CalSTRS) West Sacramento, California $782B AUM 28.39% 1-Year Est. Return
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

David Shaw's MIR Position: Q2 2026 in Review

David Shaw reduced its Mirion Technologies (MIR) stake by 14% in Q2 2026, selling an estimated $1.26M and leaving 400,454 shares worth $7.18M. The position accounts for ﹤0.01% of the portfolio, ranked #2117.

David Shaw first reported a position in MIR in Q2 2021 and has held it in 10 quarters since. The position peaked at $28.8M in Q3 2025. 350 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • David Shaw held 400,454 shares of Mirion Technologies worth $7.18M as of Q2 2026.
  • David Shaw sold 67,683 Mirion Technologies shares in Q2 2026, an estimated $1.26M.
  • Mirion Technologies made up ﹤0.01% of David Shaw's portfolio in Q2 2026, its #2117 holding.
  • David Shaw first reported a position in Mirion Technologies in Q2 2021 and has held it in 10 quarters since.
  • David Shaw's Mirion Technologies position peaked at $28.8M in Q3 2025.
  • 350 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.