Nuveen’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
$211M Sell
2,068,408
-59,523
-3% -$5.92M 0.06% 248
2025
Q4
$177M Sell
2,127,931
-14,574
-0.7% -$1.36M 0.05% 288
2025
Q3
$218M Buy
2,142,505
+87,716
+4% +$8.45M 0.06% 252
2025
Q2
$211M Sell
2,054,789
-179,411
-8% -$16.9M 0.06% 250
2025
Q1
$192M Sell
2,234,200
-314,770
-12% -$30.3M 0.06% 267
2024
Q4
$268M Buy
2,548,970
+715,024
+39% +$84M 0.08% 215
2024
Q3
$218M Buy
1,833,946
+153,047
+9% +$16.4M 0.06% 245
2024
Q2
$151M Buy
1,680,899
+90,662
+6% +$7.34M 0.04% 311
2024
Q1
$128M Buy
1,590,237
+799,906
+101% +$57.9M 0.04% 357
2023
Q4
$55.4M Sell
790,331
-42,606
-5% -$2.67M 0.02% 566
2023
Q3
$49.5M Sell
832,937
-37,440
-4% -$2.29M 0.02% 564
2023
Q2
$49.5M Sell
870,377
-28,609
-3% -$1.57M 0.02% 578
2023
Q1
$47.6M Buy
898,986
+23,981
+3% +$1.26M 0.02% 568
2022
Q4
$43.6M Sell
875,005
-92,827
-10% -$4.69M 0.02% 591
2022
Q3
$42.6M Sell
967,832
-226,738
-19% -$11.4M 0.02% 593
2022
Q2
$58.2M Buy
1,194,570
+169,323
+17% +$8.91M 0.02% 498
2022
Q1
$51.4M Sell
1,025,247
-54,759
-5% -$2.61M 0.02% 635
2021
Q4
$56.5M Buy
1,080,006
+41,834
+4% +$1.98M 0.02% 624
2021
Q3
$45.1M Sell
1,038,172
-165,492
-14% -$7.45M 0.01% 739
2021
Q2
$50.9M Sell
1,203,664
-102,379
-8% -$4.29M 0.02% 732
2021
Q1
$48.3M Sell
1,306,043
-307,853
-19% -$10.3M 0.02% 741
2020
Q4
$47.6M Buy
1,613,896
+321,253
+25% +$8.91M 0.02% 703
2020
Q3
$34.6M Buy
1,292,643
+21,850
+2% +$622K 0.01% 733
2020
Q2
$33.2M Sell
1,270,793
-2,177
-0.2% -$55K 0.01% 740
2020
Q1
$30.3M Sell
1,272,970
-159,034
-11% -$4.81M 0.01% 679
2019
Q4
$45.6M Sell
1,432,004
-56,216
-4% -$1.84M 0.02% 719
2019
Q3
$48.2M Sell
1,488,220
-435,246
-23% -$13.7M 0.02% 674
2019
Q2
$60.2M Buy
1,923,466
+275,114
+17% +$9.02M 0.02% 590
2019
Q1
$58.5M Buy
1,648,352
+1,637,295
+14,808% +$57.8M 0.31% 55
2018
Q4
$358K Sell
11,057
-520,613
-98% -$17.1M ﹤0.01% 865
2018
Q3
$18.4M Buy
531,670
+206,896
+64% +$7.37M 0.1% 329
2018
Q2
$11.4M Sell
324,774
-505,707
-61% -$17.1M 0.07% 371
2018
Q1
$27.3M Sell
830,481
-85,022
-9% -$2.87M 0.18% 179
2017
Q4
$34.5M Buy
915,503
+897,444
+4,970% +$35.6M 0.22% 127
2017
Q3
$702K Buy
18,059
+4,553
+34% +$170K ﹤0.01% 842
2017
Q2
$464K Buy
13,506
+837
+7% +$29.3K ﹤0.01% 941
2017
Q1
$452K Sell
12,669
-89,209
-88% -$3.16M ﹤0.01% 1183
2016
Q4
$3.31M Buy
101,878
+87,936
+631% +$2.92M 0.02% 739
2016
Q3
$523K Buy
13,942
+368
+3% +$14.2K ﹤0.01% 1235
2016
Q2
$541K Buy
13,574
+1,325
+11% +$48.2K ﹤0.01% 1160
2016
Q1
$415 Hold
12,249
﹤0.01% 1256
2015
Q4
$331 Sell
12,249
-425
-3% -$12.5K ﹤0.01% 1360
2015
Q3
$393 Sell
12,674
-15,200
-55% -$454K ﹤0.01% 1375
2015
Q2
$864 Buy
27,874
+4,200
+18% +$147K ﹤0.01% 1211
2015
Q1
$864K Buy
23,674
+11,000
+87% +$425K ﹤0.01% 1217
2014
Q4
$490K Buy
12,674
+239
+2% +$8.69K ﹤0.01% 1385
2014
Q3
$406K Sell
12,435
-1,035
-8% -$33.6K ﹤0.01% 1402
2014
Q2
$441K Sell
13,470
-710
-5% -$19.3K ﹤0.01% 1392
2014
Q1
$361K Sell
14,180
-3,145
-18% -$80.4K ﹤0.01% 1403
2013
Q4
$486K Sell
17,325
-150
-0.9% -$3.84K ﹤0.01% 1320
2013
Q3
$436K Buy
17,475
+71
+0.4% +$1.8K ﹤0.01% 1341
2013
Q2
$428K Buy
+17,404
New +$562K ﹤0.01% 1338

Other funds holding IRM

Nuveen's IRM Position: Q1 2026 in Review

Nuveen reduced its Iron Mountain (IRM) stake by 2.8% in Q1 2026, selling an estimated $5.92M and leaving 2,068,408 shares worth $211M. The position accounts for 0.06% of the portfolio, ranked #248.

Nuveen first reported a position in IRM in Q2 2013 and has held it in 52 quarters since. The position peaked at $268M in Q4 2024. 1,086 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Nuveen held 2,068,408 shares of Iron Mountain worth $211M as of Q1 2026.
  • Nuveen sold 59,523 Iron Mountain shares in Q1 2026, an estimated $5.92M.
  • Iron Mountain made up 0.06% of Nuveen's portfolio in Q1 2026, its #248 holding.
  • Nuveen first reported a position in Iron Mountain in Q2 2013 and has held it in 52 quarters since.
  • Nuveen's Iron Mountain position peaked at $268M in Q4 2024.
  • 1,086 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Nuveen's 13F filing for Q1 2026, filed 30 Apr 2026.