Vanguard Portfolio Management
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Vanguard Portfolio Management’s Mirion Technologies MIR Stock Holding History

Vanguard Portfolio 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
Q2 		$326M Buy
18,179,850
+274,128
+2% +$5.08M 0.01% 935
2026
Q1 		$333M Buy
+17,905,722
New +$404M 0.02% 836

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 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
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management's MIR Position: Q2 2026 in Review

Vanguard Portfolio Management increased its Mirion Technologies (MIR) stake by 1.5% in Q2 2026, buying an estimated $5.08M and bringing the position to 18,179,850 shares worth $326M. The position accounts for 0.01% of the portfolio, ranked #935.

Vanguard Portfolio Management first reported a position in MIR in Q1 2026 and has held it in 2 quarters since. The position peaked at $333M in Q1 2026. 331 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Vanguard Portfolio Management held 18,179,850 shares of Mirion Technologies worth $326M as of Q2 2026.
  • Vanguard Portfolio Management bought 274,128 Mirion Technologies shares in Q2 2026, an estimated $5.08M.
  • Mirion Technologies made up 0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #935 holding.
  • Vanguard Portfolio Management first reported a position in Mirion Technologies in Q1 2026 and has held it in 2 quarters since.
  • Vanguard Portfolio Management's Mirion Technologies position peaked at $333M in Q1 2026.
  • 331 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.