Simplex Trading’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
$1.53M Sell
15,000
-15,500
-51% -$1.54M ﹤0.01% 2064
2025
Q4
$2.53M Buy
30,500
+9,500
+45% +$889K ﹤0.01% 1791
2025
Q3
$2.14M Sell
21,000
-144,500
-87% -$13.9M ﹤0.01% 2258
2025
Q2
$17M Sell
165,500
-7,000
-4% -$660K 0.01% 619
2025
Q1
$14.8M Buy
172,500
+127,200
+281% +$12.3M 0.01% 660
2024
Q4
$4.76M Sell
45,300
-299,800
-87% -$35.2M ﹤0.01% 1506
2024
Q3
$27.6M Buy
345,100
+280,700
+436% +$30M 0.02% 511
2024
Q2
$5.77M Buy
64,400
+7,800
+14% +$631K ﹤0.01% 1353
2024
Q1
$4.54M Buy
56,600
+20,500
+57% +$1.48M ﹤0.01% 1678
2023
Q4
$2.53M Sell
36,100
-17,100
-32% -$1.07M ﹤0.01% 2175
2023
Q3
$3.16M Sell
53,200
-72,200
-58% -$4.41M ﹤0.01% 1678
2023
Q2
$7.13M Buy
125,400
+91,900
+274% +$5.03M 0.01% 1083
2023
Q1
$1.77M Sell
33,500
-146,200
-81% -$7.66M ﹤0.01% 2046
2022
Q4
$8.96M Buy
179,700
+126,200
+236% +$6.37M 0.01% 899
2022
Q3
$2.35M Sell
53,500
-37,100
-41% -$1.87M ﹤0.01% 1812
2022
Q2
$4.41M Buy
90,600
+32,600
+56% +$1.72M ﹤0.01% 1229
2022
Q1
$3.21M Buy
58,000
+6,700
+13% +$319K ﹤0.01% 1636
2021
Q4
$2.68M Sell
51,300
-19,500
-28% -$922K ﹤0.01% 1736
2021
Q3
$3.02M Buy
70,800
+1,000
+1% +$45K ﹤0.01% 1665
2021
Q2
$2.95M Buy
+69,800
New +$2.93M ﹤0.01% 1688
2021
Q1
Sell
-370
Closed -$1.09M 9366
2020
Q4
$1.09M Sell
370
-291
-44% -$8.07K ﹤0.01% 2444
2020
Q3
$1.77M Sell
661
-922
-58% -$26.2K ﹤0.01% 1653
2020
Q2
$4.13M Sell
1,583
-272
-15% -$6.87K 0.01% 972
2020
Q1
$4.41M Buy
1,855
+1,029
+125% +$31.1K 0.01% 759
2019
Q4
$2.63M Buy
826
+577
+232% +$18.9K 0.01% 1252
2019
Q3
$806K Sell
249
-63
-20% -$1.98K ﹤0.01% 2154
2019
Q2
$976K Buy
312
+196
+169% +$6.42K ﹤0.01% 1927
2019
Q1
$411K Sell
116
-66
-36% -$2.33K ﹤0.01% 2863
2018
Q4
$589K Sell
182
-99
-35% -$3.25K ﹤0.01% 2072
2018
Q3
$970K Buy
281
+152
+118% +$5.42K ﹤0.01% 1923
2018
Q2
$451K Sell
129
-40
-24% -$1.35K ﹤0.01% 2561
2018
Q1
$26K Buy
169
+81
+92% +$2.73K ﹤0.01% 3088
2017
Q4
$4K Buy
88
+68
+340% +$2.7K ﹤0.01% 4691
2017
Q3
$1K Buy
+20
New +$747 ﹤0.01% 5459
2017
Q1
Sell
-79
Closed -$17K 6438
2016
Q4
$17K Buy
+79
New +$2.63K ﹤0.01% 3180
2016
Q2
Sell
-22
Closed -$1K 6102
2016
Q1
$1K Sell
22
-3
-12% -$86 ﹤0.01% 5120
2015
Q4
$5K Sell
25
-4
-14% -$117 ﹤0.01% 3873
2015
Q3
$4K Sell
29
-21
-42% -$627 ﹤0.01% 4163
2015
Q2
$7K Buy
50
+4
+9% +$140 ﹤0.01% 3376
2015
Q1
$3K Sell
46
-43
-48% -$1.66K ﹤0.01% 3849
2014
Q4
$18K Buy
+89
New +$3.24K ﹤0.01% 2138

Other funds holding IRM

Simplex Trading's IRM Position: Q1 2026 in Review

Simplex Trading increased its Iron Mountain (IRM) stake by 528% in Q1 2026, buying an estimated $1.24M and bringing the position to 14,800 shares worth $1.51M. The position accounts for ﹤0.01% of the portfolio, ranked #2074.

Simplex Trading first reported a position in IRM in Q4 2014 and has held it in 14 quarters since. The position peaked at $1.58M in Q4 2022. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Simplex Trading held 14,800 shares of Iron Mountain worth $1.51M as of Q1 2026.
  • Simplex Trading bought 12,443 Iron Mountain shares in Q1 2026, an estimated $1.24M.
  • Iron Mountain made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2074 holding.
  • Simplex Trading first reported a position in Iron Mountain in Q4 2014 and has held it in 14 quarters since.
  • Simplex Trading's Iron Mountain position peaked at $1.58M in Q4 2022.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.