Group One 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
$1.22M Sell
11,900
-7,400
-38% -$736K ﹤0.01% 2530
2025
Q4
$1.6M Buy
19,300
+3,500
+22% +$328K ﹤0.01% 2472
2025
Q3
$1.61M Hold
15,800
﹤0.01% 2538
2025
Q2
$1.62M Sell
15,800
-54,800
-78% -$5.17M ﹤0.01% 2330
2025
Q1
$6.07M Sell
70,600
-5,300
-7% -$511K 0.02% 928
2024
Q4
$7.98M Sell
75,900
-57,900
-43% -$6.8M 0.02% 837
2024
Q3
$15.9M Buy
133,800
+81,500
+156% +$8.72M 0.05% 366
2024
Q2
$4.69M Buy
52,300
+17,000
+48% +$1.38M 0.02% 840
2024
Q1
$2.83M Buy
35,300
+10,300
+41% +$746K 0.01% 1238
2023
Q4
$1.75M Sell
25,000
-84,500
-77% -$5.3M ﹤0.01% 1981
2023
Q3
$6.51M Sell
109,500
-35,700
-25% -$2.18M 0.02% 774
2023
Q2
$8.25M Buy
145,200
+62,300
+75% +$3.41M 0.03% 620
2023
Q1
$4.39M Sell
82,900
-4,500
-5% -$236K 0.02% 915
2022
Q4
$4.36M Sell
87,400
-29,100
-25% -$1.47M 0.01% 1238
2022
Q3
$5.12M Buy
116,500
+20,500
+21% +$1.04M 0.01% 1151
2022
Q2
$4.67M Sell
96,000
-5,600
-6% -$295K 0.01% 1345
2022
Q1
$5.63M Buy
101,600
+49,600
+95% +$2.36M 0.01% 1463
2021
Q4
$2.72M Sell
52,000
-80,800
-61% -$3.82M ﹤0.01% 2275
2021
Q3
$5.77M Sell
132,800
-80,300
-38% -$3.61M 0.01% 1551
2021
Q2
$9.02M Sell
213,100
-2,800
-1% -$117K 0.01% 1156
2021
Q1
$7.99M Sell
215,900
-97,700
-31% -$3.27M 0.01% 1116
2020
Q4
$9.24M Buy
313,600
+41,800
+15% +$1.16M 0.02% 849
2020
Q3
$7.28M Sell
271,800
-4,900
-2% -$139K 0.02% 684
2020
Q2
$7.22M Buy
276,700
+217,300
+366% +$5.49M 0.03% 591
2020
Q1
$1.41M Sell
59,400
-61,700
-51% -$1.87M 0.01% 1267
2019
Q4
$3.86M Sell
121,100
-24,500
-17% -$803K 0.03% 845
2019
Q3
$4.72M Buy
145,600
+83,000
+133% +$2.61M 0.04% 605
2019
Q2
$1.96M Buy
62,600
+13,000
+26% +$426K 0.02% 1101
2019
Q1
$1.76M Buy
49,600
+18,100
+57% +$639K 0.02% 1013
2018
Q4
$1.02M Sell
31,500
-44,200
-58% -$1.45M 0.01% 1492
2018
Q3
$2.61M Buy
75,700
+47,100
+165% +$1.68M 0.02% 968
2018
Q2
$1M Buy
28,600
+17,100
+149% +$578K 0.01% 1724
2018
Q1
$378K Hold
11,500
﹤0.01% 2274
2017
Q4
$434K Sell
11,500
-4,700
-29% -$186K ﹤0.01% 2357
2017
Q3
$630K Buy
16,200
+1,300
+9% +$48.6K 0.01% 1891
2017
Q2
$512K Buy
14,900
+13,500
+964% +$472K 0.01% 1952
2017
Q1
$50K Sell
1,400
-2,400
-63% -$85K ﹤0.01% 3402
2016
Q4
$123K Buy
3,800
+100
+3% +$3.32K ﹤0.01% 2724
2016
Q3
$139K Buy
3,700
+1,900
+106% +$73.3K ﹤0.01% 2721
2016
Q2
$72K Sell
1,800
-1,700
-49% -$61.9K ﹤0.01% 3069
2016
Q1
$119K Sell
3,500
-17,300
-83% -$497K ﹤0.01% 2709
2015
Q4
$562K Buy
20,800
+2,800
+16% +$82.1K 0.01% 1728
2015
Q3
$558K Buy
18,000
+5,000
+38% +$149K 0.01% 1687
2015
Q2
$403K Sell
13,000
-220,000
-94% -$7.7M 0.01% 1976
2015
Q1
$8.5M Buy
233,000
+130,000
+126% +$5.02M 0.13% 128
2014
Q4
$3.98M Sell
103,000
-290,200
-74% -$10.6M 0.06% 371
2014
Q3
$12.8M Buy
393,200
+120,320
+44% +$3.9M 0.2% 86
2014
Q2
$8.94M Buy
272,880
+124,538
+84% +$3.38M 0.14% 140
2014
Q1
$3.78M Buy
148,342
+77,363
+109% +$1.98M 0.06% 323
2013
Q4
$1.99M Buy
70,979
+55,939
+372% +$1.43M 0.03% 657
2013
Q3
$376K Buy
+15,040
New +$382K 0.01% 1857

Other funds holding IRM

Group One Trading's IRM Position: Q1 2026 in Review

Group One Trading reduced its Iron Mountain (IRM) stake by 18% in Q1 2026, selling an estimated $114K and leaving 5,151 shares worth $526K. The position accounts for ﹤0.01% of the portfolio, ranked #3295.

Group One Trading first reported a position in IRM in Q3 2013 and has held it in 16 quarters since. The position peaked at $6.61M in Q2 2014. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Group One Trading held 5,151 shares of Iron Mountain worth $526K as of Q1 2026.
  • Group One Trading sold 1,143 Iron Mountain shares in Q1 2026, an estimated $114K.
  • Iron Mountain made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #3295 holding.
  • Group One Trading first reported a position in Iron Mountain in Q3 2013 and has held it in 16 quarters since.
  • Group One Trading's Iron Mountain position peaked at $6.61M in Q2 2014.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.