Public Sector Pension Investment Board (PSP Investments)
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Public Sector Pension Investment Board (PSP Investments)’s Iron Mountain IRM Stock Holding History

Public Sector Pension Investment Board (PSP Investments)’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 		$10.7M Buy
84,934
+741
+0.9% +$90.8K 0.03% 615
2026
Q1 		$8.6M Buy
84,193
+8,946
+12% +$890K 0.03% 630
2025
Q4 		$6.24M Buy
75,247
+11,567
+18% +$1.08M 0.02% 742
2025
Q3 		$6.49M Buy
63,680
+3,008
+5% +$290K 0.02% 660
2025
Q2 		$6.22M Sell
60,672
-17,870
-23% -$1.68M 0.03% 581
2025
Q1 		$6.76M Sell
78,542
-146,639
-65% -$14.1M 0.03% 547
2024
Q4 		$23.7M Buy
225,181
+174,053
+340% +$20.5M 0.1% 141
2024
Q3 		$6.08M Buy
51,128
+10,410
+26% +$1.11M 0.03% 398
2024
Q2 		$3.65M Buy
40,718
+6,164
+18% +$499K 0.02% 567
2024
Q1 		$2.77M Sell
34,554
-390
-1% -$28.2K 0.02% 631
2023
Q4 		$2.45M Sell
34,944
-24,330
-41% -$1.53M 0.02% 676
2023
Q3 		$3.52M Buy
59,274
+3,405
+6% +$208K 0.03% 474
2023
Q2 		$3.17M Sell
55,869
-11,781
-17% -$645K 0.02% 657
2023
Q1 		$3.58M Buy
67,650
+434
+0.6% +$22.7K 0.03% 585
2022
Q4 		$3.35M Buy
67,216
+13,867
+26% +$700K 0.03% 624
2022
Q3 		$2.35M Buy
53,349
+25,400
+91% +$1.28M 0.02% 743
2022
Q2 		$1.36M Sell
27,949
-12,551
-31% -$660K 0.01% 1032
2022
Q1 		$2.24M Sell
40,500
-7,810
-16% -$372K 0.01% 953
2021
Q4 		$2.53M Sell
48,310
-7,584
-14% -$358K 0.01% 973
2021
Q3 		$2.43M Buy
55,894
+3,613
+7% +$163K 0.01% 990
2021
Q2 		$2.26M Buy
52,281
+22,339
+75% +$937K 0.01% 1044
2021
Q1 		$1.11M Sell
29,942
-358,688
-92% -$12M 0.01% 1246
2020
Q4 		$11.5M Sell
388,630
-12,250
-3% -$340K 0.09% 210
2020
Q3 		$10.7M Buy
400,880
+7,100
+2% +$202K 0.09% 231
2020
Q2 		$10.3M Sell
393,780
-900
-0.2% -$22.7K 0.1% 200
2020
Q1 		$9.39M Sell
394,680
-20,930
-5% -$633K 0.11% 176
2019
Q4 		$13.2M Sell
415,610
-5,870
-1% -$192K 0.08% 234
2019
Q3 		$13.7M Sell
421,480
-61,984
-13% -$1.95M 0.09% 201
2019
Q2 		$15.1M Buy
483,464
+70,500
+17% +$2.31M 0.12% 155
2019
Q1 		$14.6M Buy
412,964
+398,200
+2,697% +$14.1M 0.13% 147
2018
Q4 		$479K Buy
14,764
+1,300
+10% +$42.6K ﹤0.01% 1338
2018
Q3 		$465K Sell
13,464
-2,300
-15% -$81.9K ﹤0.01% 1331
2018
Q2 		$552K Hold
15,764
– – ﹤0.01% 1132
2018
Q1 		$518K Buy
15,764
+1,600
+11% +$53.9K ﹤0.01% 1111
2017
Q4 		$534K Sell
14,164
-14,400
-50% -$571K ﹤0.01% 1172
2017
Q3 		$1.11M Buy
28,564
+1,718
+6% +$64.2K ﹤0.01% 722
2017
Q2 		$922K Sell
26,846
-28,100
-51% -$983K 0.01% 758
2017
Q1 		$1.96M Hold
54,946
– – 0.02% 631
2016
Q4 		$1.78M Hold
54,946
– – 0.02% 647
2016
Q3 		$2.06M Buy
54,946
+9,700
+21% +$374K 0.02% 563
2016
Q2 		$1.8M Buy
45,246
+14,300
+46% +$520K 0.02% 551
2016
Q1 		$1.05M Sell
30,946
-18,100
-37% -$520K 0.01% 723
2015
Q4 		$1.32M Sell
49,046
-1,500
-3% -$44K 0.01% 686
2015
Q3 		$1.57M Sell
50,546
-14,100
-22% -$421K 0.01% 734
2015
Q2 		$2M Hold
64,646
– – 0.01% 817
2015
Q1 		$2.36M Buy
64,646
+2,040
+3% +$78.8K 0.02% 796
2014
Q4 		$2.42M Sell
62,606
-347
-0.6% -$12.6K 0.02% 783
2014
Q3 		$2.06M Sell
62,953
-6,136
-9% -$199K 0.01% 837
2014
Q2 		$2.26M Buy
69,089
+1,547
+2% +$42K 0.01% 886
2014
Q1 		$1.72M Sell
67,542
-432
-0.6% -$11.1K 0.01% 939
2013
Q4 		$1.91M Buy
67,974
+6,600
+11% +$169K 0.01% 956
2013
Q3 		$1.53M Sell
61,374
-433
-0.7% -$11K 0.01% 995
2013
Q2 		$1.52M Buy
+61,807
New +$1.99M 0.01% 873

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

Public Sector Pension Investment Board (PSP Investments)'s IRM Position: Q2 2026 in Review

Public Sector Pension Investment Board (PSP Investments) increased its Iron Mountain (IRM) stake by 0.88% in Q2 2026, buying an estimated $90.8K and bringing the position to 84,934 shares worth $10.7M. The position accounts for 0.03% of the portfolio, ranked #615.

Public Sector Pension Investment Board (PSP Investments) first reported a position in IRM in Q2 2013 and has held it in 53 quarters since. The position peaked at $23.7M in Q4 2024. 1,163 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Public Sector Pension Investment Board (PSP Investments) held 84,934 shares of Iron Mountain worth $10.7M as of Q2 2026.
  • Public Sector Pension Investment Board (PSP Investments) bought 741 Iron Mountain shares in Q2 2026, an estimated $90.8K.
  • Iron Mountain made up 0.03% of Public Sector Pension Investment Board (PSP Investments)'s portfolio in Q2 2026, its #615 holding.
  • Public Sector Pension Investment Board (PSP Investments) first reported a position in Iron Mountain in Q2 2013 and has held it in 53 quarters since.
  • Public Sector Pension Investment Board (PSP Investments)'s Iron Mountain position peaked at $23.7M in Q4 2024.
  • 1,163 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Public Sector Pension Investment Board (PSP Investments)'s 13F filing for Q2 2026, filed 13 Aug 2026.