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Bornite Capital Management’s Mirion Technologies MIR Stock Holding History

Bornite 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
2025
Q4 		– Sell
-500,000
Closed -$11.6M – 44
2025
Q3 		$11.6M Sell
500,000
-1,551,700
-76% -$33.5M 1.08% 31
2025
Q2 		$44.2M Sell
2,051,700
-12,600
-0.6% -$217K 4.42% 2
2025
Q1 		$29.9M Sell
2,064,300
-52,700
-2% -$828K 7.71% 2
2024
Q4 		$36.9M Buy
+2,117,000
New +$32.8M 4.97% 3
2024
Q3 		– Sell
-1,027,600
Closed -$11M – 57
2024
Q2 		$11M Buy
+1,027,600
New +$10.9M 1.82% 22

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

Bornite Capital Management's MIR Position: Q4 2025 in Review

Bornite Capital Management sold out of Mirion Technologies (MIR) in Q4 2025, closing a stake of 500,000 shares — an estimated $11.6M sold.

Bornite Capital Management first reported a position in MIR in Q2 2024 and held it in 5 quarters. The position peaked at $44.2M in Q2 2025. 365 funds tracked by Wall St. Rank hold MIR as of Q4 2025.

  • Bornite Capital Management reported no remaining Mirion Technologies position as of Q4 2025 after selling out during the quarter.
  • Bornite Capital Management sold 500,000 Mirion Technologies shares in Q4 2025, an estimated $11.6M.
  • Bornite Capital Management first reported a position in Mirion Technologies in Q2 2024 and held it in 5 quarters.
  • Bornite Capital Management's Mirion Technologies position peaked at $44.2M in Q2 2025.
  • 365 funds tracked by Wall St. Rank held Mirion Technologies as of Q4 2025.

Based on Bornite Capital Management's 13F filing for Q4 2025, filed 13 Feb 2026.