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
Q2 		$2.44M Hold
19,300
– – ﹤0.01% 3037
2026
Q1 		$1.97M Sell
19,300
-14,800
-43% -$1.47M ﹤0.01% 2925
2025
Q4 		$2.83M Buy
34,100
+9,000
+36% +$842K ﹤0.01% 2769
2025
Q3 		$2.56M Buy
25,100
+5,300
+27% +$511K ﹤0.01% 2794
2025
Q2 		$2.03M Sell
19,800
-66,900
-77% -$6.31M ﹤0.01% 2732
2025
Q1 		$7.46M Sell
86,700
-65,900
-43% -$6.35M 0.01% 1610
2024
Q4 		$16M Buy
152,600
+57,800
+61% +$6.79M 0.01% 1179
2024
Q3 		$11.3M Buy
94,800
+63,100
+199% +$6.75M 0.01% 1345
2024
Q2 		$2.84M Hold
31,700
– – ﹤0.01% 2311
2024
Q1 		$2.54M Sell
31,700
-232,800
-88% -$16.8M ﹤0.01% 2444
2023
Q4 		$18.5M Buy
264,500
+4,800
+2% +$301K 0.02% 979
2023
Q3 		$15.4M Buy
259,700
+26,600
+11% +$1.63M 0.02% 1003
2023
Q2 		$13.2M Buy
233,100
+80,600
+53% +$4.41M 0.01% 1125
2023
Q1 		$8.07M Sell
152,500
-28,000
-16% -$1.47M 0.01% 1540
2022
Q4 		$9M Buy
180,500
+50,000
+38% +$2.52M 0.01% 1534
2022
Q3 		$5.74M Buy
130,500
+2,500
+2% +$126K 0.01% 1935
2022
Q2 		$6.23M Buy
128,000
+3,000
+2% +$158K 0.01% 1869
2022
Q1 		$6.93M Buy
125,000
+42,200
+51% +$2.01M 0.01% 1964
2021
Q4 		$4.33M Buy
+82,800
New +$3.91M ﹤0.01% 2538
2021
Q3 		– Sell
-70,600
Closed -$2.99M – 5073
2021
Q2 		$2.99M Hold
70,600
– – ﹤0.01% 2535
2021
Q1 		$2.61M Buy
+70,600
New +$2.36M ﹤0.01% 2366
2020
Q1 		– Sell
-10,000
Closed -$319K – 4088
2019
Q4 		$319K Hold
10,000
– – ﹤0.01% 3603
2019
Q3 		$324K Hold
10,000
– – ﹤0.01% 3424
2019
Q2 		$313K Hold
10,000
– – ﹤0.01% 3301
2019
Q1 		$355K Buy
+10,000
New +$353K ﹤0.01% 3152
2014
Q4 		– Sell
-55,000
Closed -$1.8M – 4112
2014
Q3 		$1.8M Buy
55,000
+900
+2% +$29.2K ﹤0.01% 2328
2014
Q2 		$1.77M Buy
+54,100
New +$1.47M ﹤0.01% 2405

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

D.E. Shaw & Co's IRM Position: Q2 2026 in Review

D.E. Shaw & Co opened a new position in Iron Mountain (IRM) in Q2 2026: 109,823 shares worth $13.9M. The stake represents 0.01% of the portfolio and ranks #1566 among its holdings. This is a return to the name: D.E. Shaw & Co previously reported a position in IRM as recently as Q4 2025.

D.E. Shaw & Co first reported a position in IRM in Q2 2013 and has held it in 42 quarters since. The position peaked at $70.3M in Q1 2025. 1,170 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • D.E. Shaw & Co held 109,823 shares of Iron Mountain worth $13.9M as of Q2 2026.
  • Iron Mountain was a new D.E. Shaw & Co position in Q2 2026.
  • Iron Mountain made up 0.01% of D.E. Shaw & Co's portfolio in Q2 2026, its #1566 holding.
  • D.E. Shaw & Co first reported a position in Iron Mountain in Q2 2013 and has held it in 42 quarters since.
  • D.E. Shaw & Co's Iron Mountain position peaked at $70.3M in Q1 2025.
  • 1,170 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.