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Apollo Management Holdings’s Iron Mountain IRM Stock Holding History

Apollo Management Holdings’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
2022
Q1 		– Sell
-420,000
Closed -$22M – 375
2021
Q4 		$22M Buy
+420,000
New +$19.9M 0.1% 45
2021
Q2 		– Sell
-1,000,000
Closed -$37M – 121
2021
Q1 		$37M Buy
+1,000,000
New +$33.4M 0.23% 20

Other funds holding IRM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Apollo Management Holdings's IRM Position: Q1 2026 in Review

Apollo Management Holdings held its Iron Mountain (IRM) position steady in Q1 2026 at 265,539 shares worth $27.1M. The position accounts for 0.36% of the portfolio, ranked #32.

Apollo Management Holdings first reported a position in IRM in Q4 2025 and has held it in 2 quarters since. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Apollo Management Holdings held 265,539 shares of Iron Mountain worth $27.1M as of Q1 2026.
  • Apollo Management Holdings left its Iron Mountain share count unchanged in Q1 2026.
  • Iron Mountain made up 0.36% of Apollo Management Holdings's portfolio in Q1 2026, its #32 holding.
  • Apollo Management Holdings first reported a position in Iron Mountain in Q4 2025 and has held it in 2 quarters since.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Apollo Management Holdings's 13F filing for Q1 2026, filed 15 May 2026.