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IRM icon

Ossiam’s Iron Mountain IRM Stock Holding History

Ossiam’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 		$1.51M Sell
11,969
-1,185
-9% -$145K 0.02% 345
2026
Q1 		$1.34M Buy
13,154
+505
+4% +$50.2K 0.02% 197
2025
Q4 		$1.05M Buy
12,649
+6,342
+101% +$594K 0.02% 212
2025
Q3 		$643K Sell
6,307
-8,966
-59% -$864K 0.01% 529
2025
Q2 		$1.57M Sell
15,273
-263
-2% -$24.8K 0.02% 312
2025
Q1 		$1.34M Sell
15,536
-356
-2% -$34.3K 0.02% 281
2024
Q4 		$1.67M Sell
15,892
-182
-1% -$21.4K 0.03% 264
2024
Q3 		$1.91M Sell
16,074
-1,673
-9% -$179K 0.04% 221
2024
Q2 		$1.59M Sell
17,747
-1,012
-5% -$81.9K 0.03% 256
2024
Q1 		$1.5M Sell
18,759
-14,926
-44% -$1.08M 0.03% 293
2023
Q4 		$2.36M Buy
33,685
+719
+2% +$45.1K 0.04% 201
2023
Q3 		$1.96M Buy
32,966
+24,663
+297% +$1.51M 0.03% 209
2023
Q2 		$472K Buy
8,303
+12
+0.1% +$657 0.01% 448
2023
Q1 		$439K Buy
8,291
+1,827
+28% +$95.7K 0.01% 402
2022
Q4 		$322K Sell
6,464
-23,862
-79% -$1.2M 0.01% 422
2022
Q3 		$1.33M Buy
+30,326
New +$1.53M 0.04% 229
2022
Q1 		– Sell
-14,278
Closed -$747K – 457
2021
Q4 		$747K Buy
14,278
+2,630
+23% +$124K 0.02% 263
2021
Q3 		$506K Sell
11,648
-1,670
-13% -$75.2K 0.01% 310
2021
Q2 		$583K Buy
13,318
+10,288
+340% +$431K 0.02% 304
2021
Q1 		$112K Buy
+3,030
New +$101K ﹤0.01% 379
2020
Q4 		– Sell
-6,886
Closed -$184K – 441
2020
Q3 		$184K Buy
6,886
+5,258
+323% +$150K 0.01% 333
2020
Q2 		$42K Buy
+1,628
New +$41.1K ﹤0.01% 387
2020
Q1 		– Sell
-15,492
Closed -$494K – 479
2019
Q4 		$494K Buy
15,492
+13,589
+714% +$446K 0.04% 235
2019
Q3 		$62K Sell
1,903
-9,187
-83% -$289K ﹤0.01% 402
2019
Q2 		$347K Buy
+11,090
New +$363K 0.03% 265

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

Ossiam's IRM Position: Q2 2026 in Review

Ossiam reduced its Iron Mountain (IRM) stake by 9% in Q2 2026, selling an estimated $145K and leaving 11,969 shares worth $1.51M. The position accounts for 0.02% of the portfolio, ranked #345.

Ossiam first reported a position in IRM in Q2 2019 and has held it in 25 quarters since. The position peaked at $2.36M in Q4 2023. 1,170 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Ossiam held 11,969 shares of Iron Mountain worth $1.51M as of Q2 2026.
  • Ossiam sold 1,185 Iron Mountain shares in Q2 2026, an estimated $145K.
  • Iron Mountain made up 0.02% of Ossiam's portfolio in Q2 2026, its #345 holding.
  • Ossiam first reported a position in Iron Mountain in Q2 2019 and has held it in 25 quarters since.
  • Ossiam's Iron Mountain position peaked at $2.36M in Q4 2023.
  • 1,170 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Ossiam's 13F filing for Q2 2026, filed 13 Aug 2026.