CAM
MIR icon

Congress Asset Management’s Mirion Technologies MIR Stock Holding History

Congress Asset 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 		$120M Buy
6,685,434
+5,571,373
+500% +$103M 0.74% 45
2026
Q1 		$20.7M Buy
+1,114,061
New +$25.1M 0.15% 143

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
TG
TCW Group Los Angeles, California $14.9B AUM 46.29% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
SIMG
Stephens Investment Management Group Houston, Texas $9.33B AUM 56.1% 1-Year Est. Return
TCM
TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
EA
Emerald Advisers Leola, Pennsylvania $4.25B AUM 141.71% 1-Year Est. Return

Congress Asset Management's MIR Position: Q2 2026 in Review

Congress Asset Management increased its Mirion Technologies (MIR) stake by 500% in Q2 2026, buying an estimated $103M and bringing the position to 6,685,434 shares worth $120M. The position accounts for 0.74% of the portfolio, ranked #45.

Congress Asset Management first reported a position in MIR in Q1 2026 and has held it in 2 quarters since. 179 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Congress Asset Management held 6,685,434 shares of Mirion Technologies worth $120M as of Q2 2026.
  • Congress Asset Management bought 5,571,373 Mirion Technologies shares in Q2 2026, an estimated $103M.
  • Mirion Technologies made up 0.74% of Congress Asset Management's portfolio in Q2 2026, its #45 holding.
  • Congress Asset Management first reported a position in Mirion Technologies in Q1 2026 and has held it in 2 quarters since.
  • 179 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Congress Asset Management's 13F filing for Q2 2026, filed 7 Jul 2026.