Group One Trading
IRM icon

Group One Trading’s Iron Mountain IRM Stock Holding History

Group One Trading’s Portfolio IRM Stock Details IRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$6.1M Buy
59,700
+32,400
+119% +$3.22M 0.01% 1143
2025
Q4 		$2.26M Buy
27,300
+15,900
+139% +$1.49M ﹤0.01% 2183
2025
Q3 		$1.16M Sell
11,400
-6,400
-36% -$617K ﹤0.01% 2872
2025
Q2 		$1.83M Sell
17,800
-16,100
-47% -$1.52M ﹤0.01% 2220
2025
Q1 		$2.92M Buy
33,900
+19,400
+134% +$1.87M 0.01% 1497
2024
Q4 		$1.52M Buy
14,500
+2,700
+23% +$317K ﹤0.01% 2161
2024
Q3 		$1.4M Sell
11,800
-19,700
-63% -$2.11M ﹤0.01% 2015
2024
Q2 		$2.82M Buy
31,500
+22,100
+235% +$1.79M 0.01% 1182
2024
Q1 		$754K Sell
9,400
-19,100
-67% -$1.38M ﹤0.01% 2344
2023
Q4 		$1.99M Buy
28,500
+1,600
+6% +$100K 0.01% 1882
2023
Q3 		$1.6M Sell
26,900
-8,700
-24% -$532K 0.01% 1839
2023
Q2 		$2.02M Sell
35,600
-29,500
-45% -$1.61M 0.01% 1707
2023
Q1 		$3.44M Buy
65,100
+41,700
+178% +$2.19M 0.01% 1090
2022
Q4 		$1.17M Sell
23,400
-4,900
-17% -$247K ﹤0.01% 2278
2022
Q3 		$1.24M Sell
28,300
-2,400
-8% -$121K ﹤0.01% 2337
2022
Q2 		$1.5M Sell
30,700
-19,700
-39% -$1.04M ﹤0.01% 2328
2022
Q1 		$2.79M Sell
50,400
-65,100
-56% -$3.1M ﹤0.01% 2063
2021
Q4 		$6.04M Buy
115,500
+6,800
+6% +$321K ﹤0.01% 1541
2021
Q3 		$4.72M Sell
108,700
-56,900
-34% -$2.56M 0.01% 1750
2021
Q2 		$7.01M Buy
165,600
+103,000
+165% +$4.32M 0.01% 1387
2021
Q1 		$2.32M Sell
62,600
-14,900
-19% -$498K ﹤0.01% 2302
2020
Q4 		$2.29M Sell
77,500
-3,800
-5% -$105K ﹤0.01% 1932
2020
Q3 		$2.18M Sell
81,300
-163,900
-67% -$4.66M 0.01% 1531
2020
Q2 		$6.4M Buy
245,200
+94,500
+63% +$2.39M 0.03% 658
2020
Q1 		$3.59M Buy
150,700
+71,200
+90% +$2.16M 0.03% 702
2019
Q4 		$2.53M Sell
79,500
-71,700
-47% -$2.35M 0.02% 1116
2019
Q3 		$4.9M Buy
151,200
+138,300
+1,072% +$4.34M 0.04% 578
2019
Q2 		$404K Buy
12,900
+10,000
+345% +$328K ﹤0.01% 2322
2019
Q1 		$103K Sell
2,900
-19,300
-87% -$682K ﹤0.01% 3153
2018
Q4 		$720K Buy
22,200
+12,100
+120% +$397K 0.01% 1745
2018
Q3 		$349K Buy
10,100
+6,800
+206% +$242K ﹤0.01% 2588
2018
Q2 		$116K Buy
3,300
+1,000
+43% +$33.8K ﹤0.01% 3452
2018
Q1 		$76K Sell
2,300
-8,000
-78% -$270K ﹤0.01% 3422
2017
Q4 		$389K Buy
10,300
+7,200
+232% +$286K ﹤0.01% 2458
2017
Q3 		$121K Buy
+3,100
New +$116K ﹤0.01% 3108
2017
Q2 		– Sell
-500
Closed -$18K – 4900
2017
Q1 		$18K Sell
500
-5,300
-91% -$188K ﹤0.01% 3913
2016
Q4 		$188K Buy
5,800
+4,200
+263% +$140K ﹤0.01% 2473
2016
Q3 		$60K Hold
1,600
– – ﹤0.01% 3245
2016
Q2 		$64K Buy
1,600
+600
+60% +$21.8K ﹤0.01% 3147
2016
Q1 		$34K Sell
1,000
-5,400
-84% -$155K ﹤0.01% 3475
2015
Q4 		$173K Buy
6,400
+100
+2% +$2.93K ﹤0.01% 2604
2015
Q3 		$195K Buy
6,300
+100
+2% +$2.98K ﹤0.01% 2513
2015
Q2 		$192K Sell
6,200
-91,000
-94% -$3.19M ﹤0.01% 2544
2015
Q1 		$3.55M Buy
97,200
+30,100
+45% +$1.16M 0.06% 371
2014
Q4 		$2.59M Sell
67,100
-118,300
-64% -$4.3M 0.04% 518
2014
Q3 		$6.05M Sell
185,400
-161,165
-47% -$5.23M 0.09% 239
2014
Q2 		$11.4M Sell
346,565
-85,153
-20% -$2.31M 0.17% 99
2014
Q1 		$11M Buy
431,718
+167,710
+64% +$4.29M 0.19% 92
2013
Q4 		$7.41M Buy
264,008
+243,017
+1,158% +$6.23M 0.11% 165
2013
Q3 		$524K Buy
+20,991
New +$533K 0.01% 1565

Other funds holding IRM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

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.