Nomura Holdings’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
$986K Sell
9,655
-5,176
-35% -$515K ﹤0.01% 1165
2025
Q4
$1.23M Sell
14,831
-121
-0.8% -$11.3K ﹤0.01% 1267
2025
Q3
$1.52M Buy
+14,952
New +$1.44M ﹤0.01% 1245
2025
Q2
Sell
-74,514
Closed -$6.41M 1697
2025
Q1
$6.41M Buy
74,514
+30,780
+70% +$2.97M 0.01% 620
2024
Q4
$4.6M Buy
43,734
+20,551
+89% +$2.41M 0.01% 800
2024
Q3
$2.75M Buy
23,183
+18,943
+447% +$2.03M 0.01% 841
2024
Q2
$380K Buy
+4,240
New +$343K ﹤0.01% 1398
2024
Q1
Sell
-51,817
Closed -$3.63M 1828
2023
Q4
$3.63M Buy
+51,817
New +$3.25M 0.01% 772
2021
Q3
Sell
-10,070
Closed -$426K 2089
2021
Q2
$426K Buy
+10,070
New +$422K ﹤0.01% 1434
2021
Q1
Sell
-13,357
Closed -$394K 2090
2020
Q4
$394K Buy
+13,357
New +$371K ﹤0.01% 1285
2020
Q3
Sell
-22,260
Closed -$580K 1370
2020
Q2
$580K Buy
+22,260
New +$562K ﹤0.01% 844
2019
Q3
Sell
-41,534
Closed -$1.28M 1294
2019
Q2
$1.28M Buy
41,534
+70
+0.2% +$2.29K 0.01% 773
2019
Q1
$1.48M Buy
41,464
+34,749
+517% +$1.23M 0.01% 731
2018
Q4
$217K Sell
6,715
-35,047
-84% -$1.15M ﹤0.01% 1075
2018
Q3
$1.44M Buy
+41,762
New +$1.49M 0.01% 815
2018
Q2
Sell
-22,091
Closed -$724 1416
2018
Q1
$724 Buy
22,091
+4,051
+22% +$137K ﹤0.01% 1131
2017
Q4
$681K Buy
18,040
+4,585
+34% +$182K ﹤0.01% 1227
2017
Q3
$523K Sell
13,455
-5,135
-28% -$192K ﹤0.01% 1240
2017
Q2
$639K Buy
+18,590
New +$650K ﹤0.01% 1150
2017
Q1
Sell
-13,490
Closed -$438K 1437
2016
Q4
$438K Buy
+13,490
New +$448K ﹤0.01% 1269
2016
Q1
Sell
-23,000
Closed -$623K 1765
2015
Q4
$623K Buy
+23,000
New +$675K ﹤0.01% 962
2015
Q3
Sell
-32,235
Closed -$1.01M 1796
2015
Q2
$1.01M Buy
+32,235
New +$1.13M ﹤0.01% 1036
2014
Q4
Sell
-253,021
Closed -$8.23M 2491
2014
Q3
$8.23M Sell
253,021
-547,383
-68% -$17.7M 0.02% 497
2014
Q2
$26M Buy
800,404
+579,625
+263% +$15.7M 0.01% 249
2014
Q1
$5.62M Buy
220,779
+210,074
+1,962% +$5.37M ﹤0.01% 704
2013
Q4
$300K Sell
10,705
-33,163
-76% -$850K ﹤0.01% 1544
2013
Q3
$1.09M Sell
43,868
-19,578
-31% -$497K 0.01% 1046
2013
Q2
$1.56M Buy
+63,446
New +$2.05M 0.01% 792

Other funds holding IRM

Nomura Holdings's IRM Position: Q1 2026 in Review

Nomura Holdings reduced its Iron Mountain (IRM) stake by 35% in Q1 2026, selling an estimated $515K and leaving 9,655 shares worth $986K. The position accounts for ﹤0.01% of the portfolio, ranked #1165.

Nomura Holdings first reported a position in IRM in Q2 2013 and has held it in 28 quarters since. The position peaked at $26M in Q2 2014. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Nomura Holdings held 9,655 shares of Iron Mountain worth $986K as of Q1 2026.
  • Nomura Holdings sold 5,176 Iron Mountain shares in Q1 2026, an estimated $515K.
  • Iron Mountain made up ﹤0.01% of Nomura Holdings's portfolio in Q1 2026, its #1165 holding.
  • Nomura Holdings first reported a position in Iron Mountain in Q2 2013 and has held it in 28 quarters since.
  • Nomura Holdings's Iron Mountain position peaked at $26M in Q2 2014.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Nomura Holdings's 13F filing for Q1 2026, filed 15 May 2026.