AIMCA
IRM icon

Alberta Investment Management Corp (AIMCo)’s Iron Mountain IRM Stock Holding History

Alberta Investment Management Corp (AIMCo)’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
-44,900
Closed -$4.61M – 589
2025
Q2 		$4.61M Sell
44,900
-3,900
-8% -$368K 0.04% 268
2025
Q1 		$4.2M Buy
48,800
+24,400
+100% +$2.35M 0.03% 314
2024
Q4 		$2.56M Sell
24,400
-13,800
-36% -$1.62M 0.02% 426
2024
Q3 		$4.54M Buy
38,200
+11,900
+45% +$1.27M 0.04% 255
2024
Q2 		$2.36M Buy
26,300
+20,400
+346% +$1.65M 0.02% 321
2024
Q1 		$473K Hold
5,900
– – ﹤0.01% 821
2023
Q4 		$413K Hold
5,900
– – ﹤0.01% 853
2023
Q3 		$351K Hold
5,900
– – ﹤0.01% 880
2023
Q2 		$335K Hold
5,900
– – ﹤0.01% 1032
2023
Q1 		$312K Buy
+5,900
New +$309K ﹤0.01% 1081
2020
Q1 		– Sell
-172,200
Closed -$5.49M – 997
2019
Q4 		$5.49M Sell
172,200
-168,900
-50% -$5.54M 0.05% 328
2019
Q3 		$11M Buy
+341,100
New +$10.7M 0.1% 189

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

Alberta Investment Management Corp (AIMCo)'s IRM Position: Q3 2025 in Review

Alberta Investment Management Corp (AIMCo) sold out of Iron Mountain (IRM) in Q3 2025, closing a stake of 44,900 shares — an estimated $4.61M sold.

Alberta Investment Management Corp (AIMCo) first reported a position in IRM in Q3 2019 and held it in 12 quarters. The position peaked at $11M in Q3 2019. 1,015 funds tracked by Wall St. Rank hold IRM as of Q3 2025.

  • Alberta Investment Management Corp (AIMCo) reported no remaining Iron Mountain position as of Q3 2025 after selling out during the quarter.
  • Alberta Investment Management Corp (AIMCo) sold 44,900 Iron Mountain shares in Q3 2025, an estimated $4.61M.
  • Alberta Investment Management Corp (AIMCo) first reported a position in Iron Mountain in Q3 2019 and held it in 12 quarters.
  • Alberta Investment Management Corp (AIMCo)'s Iron Mountain position peaked at $11M in Q3 2019.
  • 1,015 funds tracked by Wall St. Rank held Iron Mountain as of Q3 2025.

Based on Alberta Investment Management Corp (AIMCo)'s 13F filing for Q3 2025, filed 7 Nov 2025.