Mariner
MIR icon

Mariner’s Mirion Technologies MIR Stock Holding History

Mariner’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 		– Sell
-62,504
Closed -$1.46M – 3721
2025
Q4 		$1.46M Buy
62,504
+26,698
+75% +$666K ﹤0.01% 1684
2025
Q3 		$833K Sell
35,806
-21,648
-38% -$468K ﹤0.01% 2047
2025
Q2 		$1.24M Buy
57,454
+1,276
+2% +$22K ﹤0.01% 1652
2025
Q1 		$815K Buy
56,178
+36,137
+180% +$568K ﹤0.01% 1828
2024
Q4 		$350K Sell
20,041
-20
-0.1% -$310 ﹤0.01% 2489
2024
Q3 		$222K Sell
20,061
-6,445
-24% -$67.8K ﹤0.01% 2846
2024
Q2 		$285K Buy
26,506
+4,222
+19% +$44.9K ﹤0.01% 2495
2024
Q1 		$253K Buy
22,284
+6,029
+37% +$60.4K ﹤0.01% 2584
2023
Q4 		$167K Buy
16,255
+4,195
+35% +$35.4K ﹤0.01% 2744
2023
Q3 		$90.1K Sell
12,060
-2,127
-15% -$16.8K ﹤0.01% 2693
2023
Q2 		$120K Buy
+14,187
New +$115K ﹤0.01% 2592
2022
Q4 		– Sell
-10,669
Closed -$80K – 2797
2022
Q3 		$80K Buy
+10,669
New +$75.1K ﹤0.01% 2248

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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Mariner's MIR Position: Q1 2026 in Review

Mariner sold out of Mirion Technologies (MIR) in Q1 2026, closing a stake of 62,504 shares — an estimated $1.46M sold.

Mariner first reported a position in MIR in Q3 2022 and held it in 12 quarters. The position peaked at $1.46M in Q4 2025. 362 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Mariner reported no remaining Mirion Technologies position as of Q1 2026 after selling out during the quarter.
  • Mariner sold 62,504 Mirion Technologies shares in Q1 2026, an estimated $1.46M.
  • Mariner first reported a position in Mirion Technologies in Q3 2022 and held it in 12 quarters.
  • Mariner's Mirion Technologies position peaked at $1.46M in Q4 2025.
  • 362 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.