Alyeska Investment Group
IRM icon

Alyeska Investment Group’s Iron Mountain IRM Stock Holding History

Alyeska Investment Group’s Portfolio IRM Stock Details IRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-6,689
Closed -$686K – 652
2025
Q2 		$686K Sell
6,689
-169,895
-96% -$16M ﹤0.01% 515
2025
Q1 		$15.2M Buy
+176,584
New +$17M 0.06% 275
2024
Q1 		– Sell
-145,603
Closed -$10.2M – 538
2023
Q4 		$10.2M Buy
+145,603
New +$9.13M 0.07% 259

Other funds holding IRM

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Alyeska Investment Group's IRM Position: Q3 2025 in Review

Alyeska Investment Group sold out of Iron Mountain (IRM) in Q3 2025, closing a stake of 6,689 shares — an estimated $686K sold.

Alyeska Investment Group first reported a position in IRM in Q4 2023 and held it in 3 quarters. The position peaked at $15.2M in Q1 2025. 1,015 funds tracked by Wall St. Rank hold IRM as of Q3 2025.

  • Alyeska Investment Group reported no remaining Iron Mountain position as of Q3 2025 after selling out during the quarter.
  • Alyeska Investment Group sold 6,689 Iron Mountain shares in Q3 2025, an estimated $686K.
  • Alyeska Investment Group first reported a position in Iron Mountain in Q4 2023 and held it in 3 quarters.
  • Alyeska Investment Group's Iron Mountain position peaked at $15.2M in Q1 2025.
  • 1,015 funds tracked by Wall St. Rank held Iron Mountain as of Q3 2025.

Based on Alyeska Investment Group's 13F filing for Q3 2025, filed 17 Nov 2025.