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Harbour Investments’s Mirion Technologies MIR Stock Holding History

Harbour Investments’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 		$9.05K Buy
486
+199
+69% +$4.49K ﹤0.01% 3315
2025
Q4 		$6.72K Buy
287
+80
+39% +$2K ﹤0.01% 2906
2025
Q3 		$4.82K Hold
207
– – ﹤0.01% 3007
2025
Q2 		$4.46K Buy
+207
New +$3.57K ﹤0.01% 2922
2021
Q3 		– Sell
-10,000
Closed -$104K – 3887
2021
Q2 		$104K Hold
10,000
– – ﹤0.01% 1383
2021
Q1 		$104K Buy
+10,000
New +$117K ﹤0.01% 1282

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

Harbour Investments's MIR Position: Q1 2026 in Review

Harbour Investments increased its Mirion Technologies (MIR) stake by 69% in Q1 2026, buying an estimated $4.49K and bringing the position to 486 shares worth $9.05K. The position accounts for ﹤0.01% of the portfolio, ranked #3315.

Harbour Investments first reported a position in MIR in Q1 2021 and has held it in 6 quarters since. The position peaked at $104K in Q2 2021. 360 funds tracked by Wall St. Rank hold MIR as of Q1 2026.

  • Harbour Investments held 486 shares of Mirion Technologies worth $9.05K as of Q1 2026.
  • Harbour Investments bought 199 Mirion Technologies shares in Q1 2026, an estimated $4.49K.
  • Mirion Technologies made up ﹤0.01% of Harbour Investments's portfolio in Q1 2026, its #3315 holding.
  • Harbour Investments first reported a position in Mirion Technologies in Q1 2021 and has held it in 6 quarters since.
  • Harbour Investments's Mirion Technologies position peaked at $104K in Q2 2021.
  • 360 funds tracked by Wall St. Rank held Mirion Technologies as of Q1 2026.

Based on Harbour Investments's 13F filing for Q1 2026, filed 15 May 2026.