Holocene Advisors
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Holocene Advisors’s Mirion Technologies MIR Stock Holding History

Holocene 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
Q2 		$6.06M Buy
337,724
+252,658
+297% +$4.69M 0.01% 381
2026
Q1 		$1.58M Buy
+85,066
New +$1.92M ﹤0.01% 609

Other funds holding MIR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
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
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
CLG
Cooperman Leon G $3.55B AUM 41.85% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return

Holocene Advisors's MIR Position: Q2 2026 in Review

Holocene Advisors increased its Mirion Technologies (MIR) stake by 297% in Q2 2026, buying an estimated $4.69M and bringing the position to 337,724 shares worth $6.06M. The position accounts for 0.01% of the portfolio, ranked #381.

Holocene Advisors first reported a position in MIR in Q1 2026 and has held it in 2 quarters since. 352 funds tracked by Wall St. Rank hold MIR as of Q2 2026.

  • Holocene Advisors held 337,724 shares of Mirion Technologies worth $6.06M as of Q2 2026.
  • Holocene Advisors bought 252,658 Mirion Technologies shares in Q2 2026, an estimated $4.69M.
  • Mirion Technologies made up 0.01% of Holocene Advisors's portfolio in Q2 2026, its #381 holding.
  • Holocene Advisors first reported a position in Mirion Technologies in Q1 2026 and has held it in 2 quarters since.
  • 352 funds tracked by Wall St. Rank held Mirion Technologies as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.