Robeco Institutional Asset Management
IRM icon

Robeco Institutional Asset Management’s Iron Mountain IRM Stock Holding History

Robeco Institutional Asset Management’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 		$37.6M Buy
297,899
+283,296
+1,940% +$34.7M 0.05% 295
2026
Q1 		$1.49M Sell
14,603
-1,094
-7% -$109K ﹤0.01% 696
2025
Q4 		$1.3M Buy
15,697
+972
+7% +$91K ﹤0.01% 704
2025
Q3 		$1.5M Hold
14,725
– – ﹤0.01% 721
2025
Q2 		$1.51M Sell
14,725
-5,481
-27% -$517K ﹤0.01% 714
2025
Q1 		$1.74M Buy
20,206
+1,039
+5% +$100K ﹤0.01% 727
2024
Q4 		$2.01M Sell
19,167
-27,322
-59% -$3.21M ﹤0.01% 698
2024
Q3 		$5.52M Sell
46,489
-28,926
-38% -$3.09M 0.01% 530
2024
Q2 		$6.76M Sell
75,415
-224,970
-75% -$18.2M 0.01% 485
2024
Q1 		$24.1M Buy
300,385
+258,231
+613% +$18.7M 0.05% 314
2023
Q4 		$2.95M Buy
42,154
+15,678
+59% +$983K 0.01% 646
2023
Q3 		$1.57M Sell
26,476
-37,580
-59% -$2.3M ﹤0.01% 724
2023
Q2 		$3.64M Sell
64,056
-22,007
-26% -$1.2M 0.01% 601
2023
Q1 		$4.55M Sell
86,063
-127,916
-60% -$6.7M 0.01% 579
2022
Q4 		$10.7M Buy
213,979
+13,577
+7% +$685K 0.03% 429
2022
Q3 		$8.81M Buy
200,402
+110,720
+123% +$5.59M 0.03% 417
2022
Q2 		$4.37M Sell
89,682
-117,003
-57% -$6.16M 0.01% 534
2022
Q1 		$11.5M Sell
206,685
-31,121
-13% -$1.48M 0.03% 433
2021
Q4 		$12.4M Sell
237,806
-75,605
-24% -$3.57M 0.03% 426
2021
Q3 		$13.6M Buy
313,411
+19,536
+7% +$879K 0.03% 416
2021
Q2 		$12.4M Buy
293,875
+48,330
+20% +$2.03M 0.03% 445
2021
Q1 		$9.09M Buy
245,545
+33,151
+16% +$1.11M 0.02% 473
2020
Q4 		$6.26M Sell
212,394
-27,157
-11% -$754K 0.02% 515
2020
Q3 		$6.42M Buy
239,551
+5,028
+2% +$143K 0.02% 475
2020
Q2 		$6.12M Buy
234,523
+215,151
+1,111% +$5.43M 0.02% 502
2020
Q1 		$460K Buy
19,372
+14,526
+300% +$440K ﹤0.01% 822
2019
Q4 		$154K Hold
4,846
– – ﹤0.01% 923
2019
Q3 		$157K Hold
4,846
– – ﹤0.01% 917
2019
Q2 		$152K Sell
4,846
-13,658
-74% -$448K ﹤0.01% 924
2019
Q1 		$656K Buy
18,504
+13,658
+282% +$482K ﹤0.01% 814
2018
Q4 		$157K Hold
4,846
– – ﹤0.01% 908
2018
Q3 		$167K Sell
4,846
-9,845
-67% -$351K ﹤0.01% 920
2018
Q2 		$515K Hold
14,691
– – ﹤0.01% 810
2018
Q1 		$483K Buy
14,691
+9,845
+203% +$332K ﹤0.01% 814
2017
Q4 		$183K Buy
4,846
+4,804
+11,438% +$191K ﹤0.01% 838
2017
Q3 		$2K Buy
+42
New +$1.57K ﹤0.01% 841
2016
Q4 		– Sell
-13,445
Closed -$505K – 820
2016
Q3 		$505K Hold
13,445
– – ﹤0.01% 705
2016
Q2 		$536K Buy
+13,445
New +$489K ﹤0.01% 665
2015
Q1 		– Sell
-5,199
Closed -$201K – 771
2014
Q4 		$201K Buy
+5,199
New +$189K ﹤0.01% 739

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

Robeco Institutional Asset Management's IRM Position: Q2 2026 in Review

Robeco Institutional Asset Management increased its Iron Mountain (IRM) stake by 1,940% in Q2 2026, buying an estimated $34.7M and bringing the position to 297,899 shares worth $37.6M. The position accounts for 0.05% of the portfolio, ranked #295.

Robeco Institutional Asset Management first reported a position in IRM in Q4 2014 and has held it in 39 quarters since. 1,166 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Robeco Institutional Asset Management held 297,899 shares of Iron Mountain worth $37.6M as of Q2 2026.
  • Robeco Institutional Asset Management bought 283,296 Iron Mountain shares in Q2 2026, an estimated $34.7M.
  • Iron Mountain made up 0.05% of Robeco Institutional Asset Management's portfolio in Q2 2026, its #295 holding.
  • Robeco Institutional Asset Management first reported a position in Iron Mountain in Q4 2014 and has held it in 39 quarters since.
  • 1,166 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Robeco Institutional Asset Management's 13F filing for Q2 2026, filed 21 Jul 2026.