Dimensional Fund Advisors
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Dimensional Fund Advisors’s Mirion Technologies MIR Stock Holding History

Dimensional Fund Advisors’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
Q3 		$83.2M Buy
5,889,778
+1,030,023
+21% +$16.3M 0.02% 1286
2026
Q2 		$87.1M Buy
4,859,755
+165,467
+4% +$3.07M 0.02% 1283
2026
Q1 		$87.2M Buy
4,694,288
+591,730
+14% +$13.3M 0.02% 1152
2025
Q4 		$96.1M Sell
4,102,558
-2,104,375
-34% -$52.5M 0.02% 1096
2025
Q3 		$144M Sell
6,206,933
-740,447
-11% -$16M 0.03% 784
2025
Q2 		$150M Sell
6,947,380
-416,574
-6% -$7.18M 0.03% 711
2025
Q1 		$107M Buy
7,363,954
+178,260
+2% +$2.8M 0.03% 921
2024
Q4 		$125M Buy
7,185,694
+171,918
+2% +$2.67M 0.03% 842
2024
Q3 		$77.6M Buy
7,013,776
+901,843
+15% +$9.49M 0.02% 1223
2024
Q2 		$65.6M Buy
6,111,933
+1,031,966
+20% +$11M 0.02% 1275
2024
Q1 		$57.8M Buy
5,079,967
+1,341,067
+36% +$13.4M 0.02% 1363
2023
Q4 		$38.3M Buy
3,738,900
+1,071,810
+40% +$9.05M 0.01% 1618
2023
Q3 		$19.9M Buy
2,667,090
+1,307,273
+96% +$10.3M 0.01% 1921
2023
Q2 		$11.5M Buy
+1,359,817
New +$11M ﹤0.01% 2195

Other funds holding MIR

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Congress Asset Management
Congress Asset Management Boston, Massachusetts $15.4B AUM 30.39% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.8B AUM 33.92% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
TimesSquare Capital Management
TimesSquare Capital Management New York $6.12B AUM 30.01% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return
Conestoga Capital Advisors
Conestoga Capital Advisors Wayne, Pennsylvania $3.31B AUM 6.07% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $362B AUM 34.89% 1-Year Est. Return
Bastion Asset Management
Bastion Asset Management Montreal, Canada $229M AUM 5.92% 1-Year Est. Return

Dimensional Fund Advisors's MIR Position: Q3 2026 in Review

Dimensional Fund Advisors increased its Mirion Technologies (MIR) stake by 21% in Q3 2026, buying an estimated $16.3M and bringing the position to 5,889,778 shares worth $83.2M. The position accounts for 0.02% of the portfolio, ranked #1286.

Dimensional Fund Advisors first reported a position in MIR in Q2 2023 and has held it in 14 quarters since. The position peaked at $150M in Q2 2025. 161 funds tracked by Wall St. Rank hold MIR as of Q3 2026.

  • Dimensional Fund Advisors held 5,889,778 shares of Mirion Technologies worth $83.2M as of Q3 2026.
  • Dimensional Fund Advisors bought 1,030,023 Mirion Technologies shares in Q3 2026, an estimated $16.3M.
  • Mirion Technologies made up 0.02% of Dimensional Fund Advisors's portfolio in Q3 2026, its #1286 holding.
  • Dimensional Fund Advisors first reported a position in Mirion Technologies in Q2 2023 and has held it in 14 quarters since.
  • Dimensional Fund Advisors's Mirion Technologies position peaked at $150M in Q2 2025.
  • 161 funds tracked by Wall St. Rank held Mirion Technologies as of Q3 2026.

Based on Dimensional Fund Advisors's 13F filing for Q3 2026, filed 4 Nov 2026.