NMIMC
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Northwestern Mutual Investment Management Company’s Iron Mountain IRM Stock Holding History

Northwestern Mutual Investment Management Company’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 		$1.2M Buy
9,538
+73
+0.8% +$8.95K 0.01% 539
2026
Q1 		$967K Buy
9,465
+20
+0.2% +$1.99K 0.01% 581
2025
Q4 		$783K Buy
9,445
+31
+0.3% +$2.9K 0.01% 672
2025
Q3 		$960K Buy
9,414
+1
+0% +$96 0.01% 594
2025
Q2 		$965K Buy
9,413
+70
+0.7% +$6.6K 0.01% 572
2025
Q1 		$804K Buy
9,343
+25
+0.3% +$2.41K 0.01% 622
2024
Q4 		$979K Buy
9,318
+21
+0.2% +$2.47K 0.02% 563
2024
Q3 		$1.1M Sell
9,297
-31
-0.3% -$3.32K 0.03% 524
2024
Q2 		$836K Buy
9,328
+64
+0.7% +$5.18K 0.02% 597
2024
Q1 		$743K Buy
9,264
+21
+0.2% +$1.52K 0.02% 644
2023
Q4 		$647K Buy
9,243
+31
+0.3% +$1.95K 0.02% 681
2023
Q3 		$548K Buy
9,212
+13
+0.1% +$794 0.01% 698
2023
Q2 		$523K Buy
9,199
+60
+0.7% +$3.29K 0.01% 731
2023
Q1 		$484K Buy
9,139
+28
+0.3% +$1.47K 0.01% 743
2022
Q4 		$454K Sell
9,111
-1,685
-16% -$85.1K 0.01% 565
2022
Q3 		$475K Sell
10,796
-817
-7% -$41.3K 0.01% 658
2022
Q2 		$565K Buy
11,613
+95
+0.8% +$5K 0.01% 664
2022
Q1 		$638K Sell
11,518
-1,509
-12% -$71.9K 0.01% 692
2021
Q4 		$682K Sell
13,027
-120
-0.9% -$5.67K 0.01% 703
2021
Q3 		$571K Buy
13,147
+35
+0.3% +$1.57K 0.01% 735
2021
Q2 		$555K Buy
13,112
+37
+0.3% +$1.55K 0.01% 759
2021
Q1 		$484K Sell
13,075
-2,739
-17% -$91.6K 0.01% 795
2020
Q4 		$466K Sell
15,814
-1
-0% -$28 0.01% 851
2020
Q3 		$413K Hold
15,815
– – 0.01% 834
2020
Q2 		$413K Buy
15,815
+811
+5% +$20.5K 0.01% 836
2020
Q1 		$357K Buy
15,004
+3,850
+35% +$117K 0.01% 795
2019
Q4 		$355K Buy
11,154
+220
+2% +$7.21K 0.01% 852
2019
Q3 		$354K Buy
10,934
+52
+0.5% +$1.63K 0.01% 841
2019
Q2 		$341K Sell
10,882
-32,633
-75% -$1.07M 0.01% 841
2019
Q1 		$1.54M Buy
43,515
+382
+0.9% +$13.5K 0.03% 458
2018
Q4 		$1.4M Sell
43,133
-6,940
-14% -$228K 0.02% 466
2018
Q3 		$1.73M Sell
50,073
-3,820
-7% -$136K 0.03% 477
2018
Q2 		$1.89M Buy
53,893
+2,664
+5% +$90K 0.03% 463
2018
Q1 		$1.68M Sell
51,229
-12,409
-19% -$418K 0.03% 485
2017
Q4 		$2.4M Buy
63,638
+4,362
+7% +$173K 0.04% 411
2017
Q3 		$2.31M Buy
59,276
+2,910
+5% +$109K 0.04% 412
2017
Q2 		$1.94M Buy
56,366
+6,789
+14% +$237K 0.03% 441
2017
Q1 		$1.77M Buy
49,577
+21,444
+76% +$759K 0.03% 441
2016
Q4 		$914K Buy
28,133
+3,912
+16% +$130K 0.02% 531
2016
Q3 		$909K Buy
24,221
+15,101
+166% +$582K 0.02% 488
2016
Q2 		$363K Buy
9,120
+1,771
+24% +$64.5K 0.01% 710
2016
Q1 		$249K Sell
7,349
-9,694
-57% -$278K 0.01% 833
2015
Q4 		$460K Buy
17,043
+399
+2% +$11.7K 0.01% 557
2015
Q3 		$516K Buy
16,644
+14
+0.1% +$418 0.01% 538
2015
Q2 		$516K Sell
16,630
-8,475
-34% -$297K 0.01% 584
2015
Q1 		$916K Buy
+25,105
New +$969K 0.02% 440

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
UBS AM
UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
CIM
Centersquare Investment Management Conshohocken, Pennsylvania $11.7B AUM 20.39% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Northwestern Mutual Investment Management Company's IRM Position: Q2 2026 in Review

Northwestern Mutual Investment Management Company increased its Iron Mountain (IRM) stake by 0.77% in Q2 2026, buying an estimated $8.95K and bringing the position to 9,538 shares worth $1.2M. The position accounts for 0.01% of the portfolio, ranked #539.

Northwestern Mutual Investment Management Company first reported a position in IRM in Q1 2015 and has held it in 46 quarters since. The position peaked at $2.4M in Q4 2017. 885 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Northwestern Mutual Investment Management Company held 9,538 shares of Iron Mountain worth $1.2M as of Q2 2026.
  • Northwestern Mutual Investment Management Company bought 73 Iron Mountain shares in Q2 2026, an estimated $8.95K.
  • Iron Mountain made up 0.01% of Northwestern Mutual Investment Management Company's portfolio in Q2 2026, its #539 holding.
  • Northwestern Mutual Investment Management Company first reported a position in Iron Mountain in Q1 2015 and has held it in 46 quarters since.
  • Northwestern Mutual Investment Management Company's Iron Mountain position peaked at $2.4M in Q4 2017.
  • 885 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Northwestern Mutual Investment Management Company's 13F filing for Q2 2026, filed 12 Aug 2026.