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Woodline Partners’s Iron Mountain IRM Stock Holding History

Woodline Partners’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
2026
Q2 		$8.19M Buy
64,861
+7,001
+12% +$858K 0.03% 579
2026
Q1 		$5.91M Buy
57,860
+7,507
+15% +$747K 0.02% 631
2025
Q4 		$4.18M Buy
50,353
+11,395
+29% +$1.07M 0.02% 664
2025
Q3 		$3.97M Buy
38,958
+7,119
+22% +$686K 0.02% 610
2025
Q2 		$3.27M Buy
31,839
+7,097
+29% +$669K 0.02% 635
2025
Q1 		$2.13M Buy
24,742
+7,193
+41% +$693K 0.01% 657
2024
Q4 		$1.84M Buy
+17,549
New +$2.06M 0.01% 666

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

Woodline Partners's IRM Position: Q2 2026 in Review

Woodline Partners increased its Iron Mountain (IRM) stake by 12% in Q2 2026, buying an estimated $858K and bringing the position to 64,861 shares worth $8.19M. The position accounts for 0.03% of the portfolio, ranked #579.

Woodline Partners first reported a position in IRM in Q4 2024 and has held it in 7 quarters since. 1,170 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Woodline Partners held 64,861 shares of Iron Mountain worth $8.19M as of Q2 2026.
  • Woodline Partners bought 7,001 Iron Mountain shares in Q2 2026, an estimated $858K.
  • Iron Mountain made up 0.03% of Woodline Partners's portfolio in Q2 2026, its #579 holding.
  • Woodline Partners first reported a position in Iron Mountain in Q4 2024 and has held it in 7 quarters since.
  • 1,170 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Woodline Partners's 13F filing for Q2 2026, filed 14 Aug 2026.