Bank of Montreal’s Iron Mountain IRM Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$41.5M Sell
406,013
-30,332
-7% -$3.02M 0.02% 601
2025
Q4
$36.2M Buy
436,345
+38,165
+10% +$3.57M 0.01% 666
2025
Q3
$40.6M Buy
398,180
+31,746
+9% +$3.06M 0.02% 564
2025
Q2
$37.6M Sell
366,434
-52,102
-12% -$4.91M 0.02% 515
2025
Q1
$36M Sell
418,536
-212,173
-34% -$20.4M 0.02% 527
2024
Q4
$66.3M Sell
630,709
-8,276
-1% -$972K 0.03% 385
2024
Q3
$74.6M Buy
638,985
+18,476
+3% +$1.98M 0.03% 366
2024
Q2
$55M Buy
620,509
+40,328
+7% +$3.26M 0.02% 434
2024
Q1
$46.5M Sell
580,181
-28,037
-5% -$2.03M 0.01% 461
2023
Q4
$43M Buy
608,218
+61,509
+11% +$3.86M 0.01% 533
2023
Q3
$34.6M Sell
546,709
-34,578
-6% -$2.11M 0.01% 533
2023
Q2
$33M Buy
581,287
+83,869
+17% +$4.59M 0.01% 541
2023
Q1
$26.3M Sell
497,418
-799,074
-62% -$41.9M 0.01% 584
2022
Q4
$71.4M Buy
1,296,492
+830,061
+178% +$41.9M 0.03% 305
2022
Q3
$25.8K Buy
466,431
+19,691
+4% +$994K 0.01% 597
2022
Q2
$22K Sell
446,740
-288,273
-39% -$15.2M 0.01% 723
2022
Q1
$40.8M Buy
735,013
+322,238
+78% +$15.3M 0.02% 540
2021
Q4
$21.8M Sell
412,775
-57,724
-12% -$2.73M 0.01% 714
2021
Q3
$20.9M Buy
470,499
+55,454
+13% +$2.5M 0.01% 910
2021
Q2
$17.9M Buy
415,045
+185,231
+81% +$7.77M 0.01% 961
2021
Q1
$8.59M Sell
229,814
-17,111
-7% -$572K 0.01% 1097
2020
Q4
$6.92M Buy
246,925
+90,615
+58% +$2.51M ﹤0.01% 1219
2020
Q3
$4.24M Sell
156,310
-64,974
-29% -$1.85M ﹤0.01% 1301
2020
Q2
$5.79M Buy
221,284
+9,802
+5% +$248K 0.01% 1097
2020
Q1
$4.55M Sell
211,482
-93,957
-31% -$2.84M 0.01% 1024
2019
Q4
$9.73M Sell
305,439
-93,023
-23% -$3.05M 0.01% 997
2019
Q3
$12.9M Sell
398,462
-122,887
-24% -$3.86M 0.01% 776
2019
Q2
$16.3M Buy
521,349
+175,701
+51% +$5.76M 0.01% 710
2019
Q1
$12.3M Buy
345,648
+21,510
+7% +$760K 0.01% 781
2018
Q4
$10.5M Buy
324,138
+3,181
+1% +$104K 0.01% 761
2018
Q3
$11.1M Buy
320,957
+4,962
+2% +$177K 0.01% 862
2018
Q2
$11.1M Sell
315,995
-53,055
-14% -$1.79M 0.01% 852
2018
Q1
$12.1M Buy
369,050
+69,405
+23% +$2.34M 0.01% 783
2017
Q4
$11.3M Buy
299,645
+119,380
+66% +$4.74M 0.01% 812
2017
Q3
$7.01M Buy
180,265
+10,419
+6% +$389K 0.01% 1003
2017
Q2
$5.84M Buy
169,846
+13,242
+8% +$463K 0.01% 1092
2017
Q1
$5.58M Buy
156,604
+4,075
+3% +$144K 0.01% 1023
2016
Q4
$5.03M Sell
152,529
-8,313
-5% -$276K 0.01% 1085
2016
Q3
$6.04M Sell
160,842
-382,580
-70% -$14.8M 0.01% 1029
2016
Q2
$21.6M Buy
543,422
+224,981
+71% +$8.19M 0.02% 517
2016
Q1
$10.8M Buy
318,441
+176,716
+125% +$5.08M 0.01% 713
2015
Q4
$3.83M Buy
141,725
+90,016
+174% +$2.64M ﹤0.01% 1097
2015
Q3
$1.6M Buy
51,709
+4,424
+9% +$132K ﹤0.01% 1385
2015
Q2
$1.47M Buy
47,285
+4,819
+11% +$169K ﹤0.01% 1501
2015
Q1
$1.55M Sell
42,466
-49,036
-54% -$1.89M ﹤0.01% 1458
2014
Q4
$3.54M Sell
91,502
-64,722
-41% -$2.35M ﹤0.01% 1169
2014
Q3
$5.1M Buy
156,224
+5,429
+4% +$176K 0.01% 1075
2014
Q2
$4.94M Buy
150,795
+55,529
+58% +$1.51M 0.01% 1088
2014
Q1
$2.43M Buy
95,266
+33,926
+55% +$868K ﹤0.01% 1249
2013
Q4
$1.72M Buy
61,340
+30,189
+97% +$773K ﹤0.01% 1242
2013
Q3
$778K Sell
31,151
-522
-2% -$13.3K ﹤0.01% 1571
2013
Q2
$779K Buy
+31,673
New +$1.02M ﹤0.01% 1518

Other funds holding IRM

Bank of Montreal's IRM Position: Q1 2026 in Review

Bank of Montreal reduced its Iron Mountain (IRM) stake by 7% in Q1 2026, selling an estimated $3.02M and leaving 406,013 shares worth $41.5M. The position accounts for 0.02% of the portfolio, ranked #601.

Bank of Montreal first reported a position in IRM in Q2 2013 and has held it in 52 quarters since. The position peaked at $74.6M in Q3 2024. 1,083 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Bank of Montreal held 406,013 shares of Iron Mountain worth $41.5M as of Q1 2026.
  • Bank of Montreal sold 30,332 Iron Mountain shares in Q1 2026, an estimated $3.02M.
  • Iron Mountain made up 0.02% of Bank of Montreal's portfolio in Q1 2026, its #601 holding.
  • Bank of Montreal first reported a position in Iron Mountain in Q2 2013 and has held it in 52 quarters since.
  • Bank of Montreal's Iron Mountain position peaked at $74.6M in Q3 2024.
  • 1,083 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Bank of Montreal's 13F filing for Q1 2026, filed 13 May 2026.