MPM
IRM icon

MBB Public Markets’s Iron Mountain IRM Stock Holding History

MBB Public Markets’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
-2,937
Closed -$301K – 261
2025
Q2 		$301K Sell
2,937
-667
-19% -$62.9K 0.03% 111
2025
Q1 		$310K Buy
+3,604
New +$347K 0.03% 349
2024
Q4 		– Sell
-3,330
Closed -$396K – 320
2024
Q3 		$396K Sell
3,330
-16,587
-83% -$1.77M 0.02% 89
2024
Q2 		$1.78M Buy
19,917
+15,974
+405% +$1.29M 0.04% 380
2024
Q1 		$316K Buy
+3,943
New +$285K 0.02% 204

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

MBB Public Markets's IRM Position: Q3 2025 in Review

MBB Public Markets sold out of Iron Mountain (IRM) in Q3 2025, closing a stake of 2,937 shares — an estimated $301K sold.

MBB Public Markets first reported a position in IRM in Q1 2024 and held it in 5 quarters. The position peaked at $1.78M in Q2 2024. 1,015 funds tracked by Wall St. Rank hold IRM as of Q3 2025.

  • MBB Public Markets reported no remaining Iron Mountain position as of Q3 2025 after selling out during the quarter.
  • MBB Public Markets sold 2,937 Iron Mountain shares in Q3 2025, an estimated $301K.
  • MBB Public Markets first reported a position in Iron Mountain in Q1 2024 and held it in 5 quarters.
  • MBB Public Markets's Iron Mountain position peaked at $1.78M in Q2 2024.
  • 1,015 funds tracked by Wall St. Rank held Iron Mountain as of Q3 2025.

Based on MBB Public Markets's 13F filing for Q3 2025, filed 14 Nov 2025.