Nomura Asset Management’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
$57.5M Buy
563,343
+18,860
+3% +$1.88M 0.15% 142
2025
Q4
$45.2M Buy
544,483
+15,435
+3% +$1.44M 0.11% 187
2025
Q3
$53.9M Buy
529,048
+11,330
+2% +$1.09M 0.14% 154
2025
Q2
$53.1M Buy
517,718
+19,609
+4% +$1.85M 0.15% 151
2025
Q1
$42.9M Buy
498,109
+23,518
+5% +$2.27M 0.13% 178
2024
Q4
$49.9M Buy
474,591
+18,296
+4% +$2.15M 0.15% 151
2024
Q3
$54.2M Buy
456,295
+7,023
+2% +$751K 0.17% 142
2024
Q2
$40.3M Buy
449,272
+24,490
+6% +$1.98M 0.14% 166
2024
Q1
$34.1M Buy
424,782
+11,911
+3% +$862K 0.12% 189
2023
Q4
$28.9M Buy
412,871
+7,210
+2% +$452K 0.12% 207
2023
Q3
$24.1M Buy
405,661
+3,657
+0.9% +$223K 0.11% 214
2023
Q2
$22.8M Buy
402,004
+9,200
+2% +$504K 0.11% 226
2023
Q1
$20.8M Buy
392,804
+4,821
+1% +$253K 0.11% 222
2022
Q4
$19.3M Buy
387,983
+25,074
+7% +$1.27M 0.11% 210
2022
Q3
$16M Buy
362,909
+18,549
+5% +$937K 0.1% 220
2022
Q2
$16.8M Buy
344,360
+9,536
+3% +$502K 0.1% 212
2022
Q1
$18.6M Sell
334,824
-10,630
-3% -$506K 0.1% 212
2021
Q4
$18.1M Buy
345,454
+21,438
+7% +$1.01M 0.09% 215
2021
Q3
$14.1M Sell
324,016
-28,761
-8% -$1.29M 0.08% 248
2021
Q2
$14.9M Sell
352,777
-3,094
-0.9% -$130K 0.09% 246
2021
Q1
$13.2M Buy
355,871
+57,206
+19% +$1.91M 0.08% 255
2020
Q4
$8.8M Buy
298,665
+9,547
+3% +$265K 0.06% 292
2020
Q3
$7.75M Buy
289,118
+22,325
+8% +$635K 0.06% 285
2020
Q2
$6.96M Buy
266,793
+6,260
+2% +$158K 0.06% 278
2020
Q1
$6.2M Buy
260,533
+5,356
+2% +$162K 0.06% 260
2019
Q4
$8.13M Buy
255,177
+16,280
+7% +$534K 0.07% 258
2019
Q3
$7.74M Buy
238,897
+4,243
+2% +$133K 0.07% 255
2019
Q2
$7.34M Sell
234,654
-2,264
-1% -$74.2K 0.07% 247
2019
Q1
$8.4M Sell
236,918
-1,731
-0.7% -$61.1K 0.08% 217
2018
Q4
$7.74M Buy
238,649
+4,960
+2% +$163K 0.09% 216
2018
Q3
$8.07M Buy
233,689
+11,540
+5% +$411K 0.08% 223
2018
Q2
$7.78M Sell
222,149
-2,304
-1% -$77.8K 0.08% 221
2018
Q1
$7.38M Buy
224,453
+14,091
+7% +$475K 0.08% 214
2017
Q4
$7.94M Buy
210,362
+9,371
+5% +$372K 0.09% 198
2017
Q3
$7.82M Buy
200,991
+8,091
+4% +$302K 0.1% 191
2017
Q2
$6.63M Buy
192,900
+1,019
+0.5% +$35.6K 0.09% 219
2017
Q1
$6.84M Buy
191,881
+1,101
+0.6% +$39K 0.1% 222
2016
Q4
$6.2M Buy
190,780
+10,540
+6% +$350K 0.11% 211
2016
Q3
$6.76M Buy
180,240
+1,650
+0.9% +$63.6K 0.12% 193
2016
Q2
$7.11M Buy
178,590
+36,400
+26% +$1.32M 0.13% 181
2016
Q1
$4.82M Buy
142,190
+9,143
+7% +$263K 0.09% 226
2015
Q4
$3.59M Buy
133,047
+8,600
+7% +$252K 0.07% 267
2015
Q3
$3.86M Buy
124,447
+11,770
+10% +$351K 0.08% 245
2015
Q2
$3.49M Buy
112,677
+13,130
+13% +$460K 0.06% 274
2015
Q1
$3.63M Buy
99,547
+9,510
+11% +$367K 0.06% 269
2014
Q4
$3.56M Buy
90,037
+68,457
+317% +$2.49M 0.06% 274
2014
Q3
$705K Buy
21,580
+4,290
+25% +$139K 0.01% 685
2014
Q2
$566K Sell
17,290
-565
-3% -$15.3K 0.01% 748
2014
Q1
$455K Buy
17,855
+627
+4% +$16K 0.01% 779
2013
Q4
$483K Sell
17,228
-2,409
-12% -$61.7K 0.01% 770
2013
Q3
$490K Hold
19,637
0.01% 751
2013
Q2
$483K Buy
+19,637
New +$634K 0.01% 747

Other funds holding IRM

Nomura Asset Management's IRM Position: Q1 2026 in Review

Nomura Asset Management increased its Iron Mountain (IRM) stake by 3.5% in Q1 2026, buying an estimated $1.88M and bringing the position to 563,343 shares worth $57.5M. The position accounts for 0.15% of the portfolio, ranked #142.

Nomura Asset Management first reported a position in IRM in Q2 2013 and has held it in 52 quarters since. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Nomura Asset Management held 563,343 shares of Iron Mountain worth $57.5M as of Q1 2026.
  • Nomura Asset Management bought 18,860 Iron Mountain shares in Q1 2026, an estimated $1.88M.
  • Iron Mountain made up 0.15% of Nomura Asset Management's portfolio in Q1 2026, its #142 holding.
  • Nomura Asset Management first reported a position in Iron Mountain in Q2 2013 and has held it in 52 quarters since.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Nomura Asset Management's 13F filing for Q1 2026, filed 11 May 2026.