Hudson Bay Capital Management
MIR icon

Hudson Bay Capital Management’s Mirion Technologies MIR Stock Holding History

Hudson Bay Capital Management’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
Q1 		$860K Buy
46,270
+6,270
+16% +$141K ﹤0.01% 903
2025
Q4 		$937K Buy
+40,000
New +$998K ﹤0.01% 805
2023
Q3 		– Sell
-210,188
Closed -$1.78M – 890
2023
Q2 		$1.78M Sell
210,188
-157,919
-43% -$1.28M 0.01% 520
2023
Q1 		$3.14M Buy
368,107
+15,187
+4% +$120K 0.03% 416
2022
Q4 		$2.33M Buy
352,920
+22,504
+7% +$151K 0.02% 569
2022
Q3 		$2.47M Buy
330,416
+291,392
+747% +$2.05M 0.02% 679
2022
Q2 		$225K Sell
39,024
-230,205
-86% -$1.69M ﹤0.01% 1002
2022
Q1 		$2.17M Sell
269,229
-433,908
-62% -$3.74M 0.03% 678
2021
Q4 		$7.36M Buy
703,137
+148,416
+27% +$1.59M 0.07% 217
2021
Q3 		$5.67M Buy
554,721
+479,721
+640% +$4.84M 0.08% 291
2021
Q2 		$780K Sell
75,000
-270,116
-78% -$2.78M 0.01% 758
2021
Q1 		$3.6M Sell
345,116
-1,664,924
-83% -$19.6M 0.04% 385
2020
Q4 		$21.9M Buy
2,010,040
+310,040
+18% +$3.2M 0.24% 57
2020
Q3 		$18.3M Buy
+1,700,000
New +$17.6M 0.27% 58

Other funds holding MIR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
CLG
Cooperman Leon G $3.05B AUM 42.78% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Hudson Bay Capital Management's MIR Position: Q1 2026 in Review

Hudson Bay Capital Management increased its Mirion Technologies (MIR) stake by 16% in Q1 2026, buying an estimated $141K and bringing the position to 46,270 shares worth $860K. The position accounts for ﹤0.01% of the portfolio, ranked #903.

Hudson Bay Capital Management first reported a position in MIR in Q3 2020 and has held it in 14 quarters since. The position peaked at $21.9M in Q4 2020. 361 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Hudson Bay Capital Management held 46,270 shares of Mirion Technologies worth $860K as of Q1 2026.
  • Hudson Bay Capital Management bought 6,270 Mirion Technologies shares in Q1 2026, an estimated $141K.
  • Mirion Technologies made up ﹤0.01% of Hudson Bay Capital Management's portfolio in Q1 2026, its #903 holding.
  • Hudson Bay Capital Management first reported a position in Mirion Technologies in Q3 2020 and has held it in 14 quarters since.
  • Hudson Bay Capital Management's Mirion Technologies position peaked at $21.9M in Q4 2020.
  • 361 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.