D.E. Shaw & Co
IRM icon

D.E. Shaw & Co’s Iron Mountain IRM Stock Holding History

D.E. Shaw & Co’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 		– Sell
-5,756
Closed -$573K – 4780
2025
Q4 		$477K Sell
5,756
-138,283
-96% -$12.9M ﹤0.01% 3952
2025
Q3 		$14.7M Sell
144,039
-439,938
-75% -$42.4M 0.01% 1397
2025
Q2 		$59.9M Sell
583,977
-233,469
-29% -$22M 0.04% 503
2025
Q1 		$70.3M Buy
817,446
+806,746
+7,540% +$77.7M 0.06% 373
2024
Q4 		$1.12M Buy
+10,700
New +$1.26M ﹤0.01% 3136
2024
Q3 		– Sell
-7,808
Closed -$835K – 4700
2024
Q2 		$700K Sell
7,808
-20,485
-72% -$1.66M ﹤0.01% 3416
2024
Q1 		$2.27M Sell
28,293
-43,720
-61% -$3.16M ﹤0.01% 2538
2023
Q4 		$5.04M Sell
72,013
-102,511
-59% -$6.43M ﹤0.01% 1899
2023
Q3 		$10.4M Buy
174,524
+28,460
+19% +$1.74M 0.01% 1266
2023
Q2 		$8.3M Buy
146,064
+66,484
+84% +$3.64M 0.01% 1493
2023
Q1 		$4.21M Sell
79,580
-40,261
-34% -$2.11M ﹤0.01% 2080
2022
Q4 		$5.97M Buy
119,841
+103,193
+620% +$5.21M 0.01% 1922
2022
Q3 		$732K Buy
+16,648
New +$841K ﹤0.01% 3807
2021
Q4 		– Sell
-54,566
Closed -$2.58M – 5539
2021
Q3 		$2.37M Buy
+54,566
New +$2.46M ﹤0.01% 2878
2021
Q1 		– Sell
-19,409
Closed -$649K – 4263
2020
Q4 		$572K Buy
+19,409
New +$539K ﹤0.01% 3323
2020
Q2 		– Sell
-80,058
Closed -$1.91M – 4108
2020
Q1 		$1.91M Sell
80,058
-184,780
-70% -$5.59M ﹤0.01% 2206
2019
Q4 		$8.44M Buy
264,838
+138,946
+110% +$4.56M 0.01% 1328
2019
Q3 		$4.08M Buy
125,892
+71,942
+133% +$2.26M 0.01% 1808
2019
Q2 		$1.69M Sell
53,950
-542,911
-91% -$17.8M ﹤0.01% 2348
2019
Q1 		$21.2M Buy
596,861
+136,931
+30% +$4.84M 0.03% 701
2018
Q4 		$14.9M Buy
459,930
+399,014
+655% +$13.1M 0.02% 858
2018
Q3 		$2.1M Buy
+60,916
New +$2.17M ﹤0.01% 2166
2018
Q1 		– Sell
-127,345
Closed -$4.8M – 3624
2017
Q4 		$4.8M Buy
127,345
+49,050
+63% +$1.95M 0.01% 1511
2017
Q3 		$3.04M Sell
78,295
-444,264
-85% -$16.6M ﹤0.01% 1744
2017
Q2 		$18M Buy
522,559
+299,572
+134% +$10.5M 0.03% 635
2017
Q1 		$7.95M Buy
222,987
+49,098
+28% +$1.74M 0.01% 998
2016
Q4 		$5.65M Buy
173,889
+75,179
+76% +$2.5M 0.01% 1281
2016
Q3 		$3.71M Sell
98,710
-50,088
-34% -$1.93M 0.01% 1488
2016
Q2 		$5.93M Buy
148,798
+80,398
+118% +$2.93M 0.01% 1182
2016
Q1 		$2.32M Buy
68,400
+34,139
+100% +$981K ﹤0.01% 1782
2015
Q4 		$925K Buy
34,261
+20,148
+143% +$591K ﹤0.01% 2694
2015
Q3 		$438K Sell
14,113
-32,300
-70% -$964K ﹤0.01% 3143
2015
Q2 		$1.44M Buy
46,413
+35,444
+323% +$1.24M ﹤0.01% 2440
2015
Q1 		$400K Buy
10,969
+4,131
+60% +$159K ﹤0.01% 3176
2014
Q4 		$264K Sell
6,838
-37,841
-85% -$1.38M ﹤0.01% 3703
2014
Q3 		$1.46M Sell
44,679
-1,286,158
-97% -$41.7M ﹤0.01% 2482
2014
Q2 		$43.6M Sell
1,330,837
-8,384
-0.6% -$227K 0.06% 367
2014
Q1 		$34.1M Buy
1,339,221
+1,037,092
+343% +$26.5M 0.05% 414
2013
Q4 		$8.47M Sell
302,129
-266,259
-47% -$6.82M 0.01% 1265
2013
Q3 		$14.2M Sell
568,388
-381,815
-40% -$9.7M 0.02% 776
2013
Q2 		$23.4M Buy
+950,203
New +$30.7M 0.04% 466

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

D.E. Shaw & Co's IRM Position: Q1 2026 in Review

D.E. Shaw & Co sold out of Iron Mountain (IRM) in Q1 2026, closing a stake of 5,756 shares — an estimated $573K sold.

D.E. Shaw & Co first reported a position in IRM in Q2 2013 and held it in 41 quarters. The position peaked at $70.3M in Q1 2025. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • D.E. Shaw & Co reported no remaining Iron Mountain position as of Q1 2026 after selling out during the quarter.
  • D.E. Shaw & Co sold 5,756 Iron Mountain shares in Q1 2026, an estimated $573K.
  • D.E. Shaw & Co first reported a position in Iron Mountain in Q2 2013 and held it in 41 quarters.
  • D.E. Shaw & Co's Iron Mountain position peaked at $70.3M in Q1 2025.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on D.E. Shaw & Co's 13F filing for Q1 2026, filed 15 May 2026.