Assenagon Asset Management
IRM icon

Assenagon Asset Management’s Iron Mountain IRM Stock Holding History

Assenagon Asset Management’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 		$1.52M Sell
12,024
-26
-0.2% -$3.19K ﹤0.01% 900
2026
Q1 		$1.23M Sell
12,050
-152
-1% -$15.1K ﹤0.01% 850
2025
Q4 		$1.01M Buy
12,202
+478
+4% +$44.7K ﹤0.01% 939
2025
Q3 		$1.2M Buy
11,724
+186
+2% +$17.9K ﹤0.01% 900
2025
Q2 		$1.18M Hold
11,538
– – ﹤0.01% 890
2025
Q1 		$993K Buy
11,538
+388
+3% +$37.4K ﹤0.01% 902
2024
Q4 		$1.17M Sell
11,150
-222
-2% -$26.1K ﹤0.01% 1074
2024
Q3 		$1.35M Buy
11,372
+92
+0.8% +$9.84K ﹤0.01% 1069
2024
Q2 		$1.01M Buy
11,280
+353
+3% +$28.6K ﹤0.01% 1096
2024
Q1 		$876K Sell
10,927
-688
-6% -$49.8K ﹤0.01% 1086
2023
Q4 		$813K Hold
11,615
– – ﹤0.01% 1147
2023
Q3 		$691K Buy
11,615
+133
+1% +$8.13K ﹤0.01% 1139
2023
Q2 		$652K Buy
11,482
+22
+0.2% +$1.2K ﹤0.01% 1069
2023
Q1 		$606K Sell
11,460
-211
-2% -$11.1K ﹤0.01% 1180
2022
Q4 		$582K Buy
11,671
+1,504
+15% +$75.9K ﹤0.01% 1151
2022
Q3 		$447K Buy
+10,167
New +$513K ﹤0.01% 1122
2022
Q1 		– Sell
-8,382
Closed -$439K – 1490
2021
Q4 		$439K Buy
+8,382
New +$396K ﹤0.01% 1219

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

Assenagon Asset Management's IRM Position: Q2 2026 in Review

Assenagon Asset Management reduced its Iron Mountain (IRM) stake by 0.22% in Q2 2026, selling an estimated $3.19K and leaving 12,024 shares worth $1.52M. The position accounts for ﹤0.01% of the portfolio, ranked #900.

Assenagon Asset Management first reported a position in IRM in Q4 2021 and has held it in 17 quarters since. 1,165 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Assenagon Asset Management held 12,024 shares of Iron Mountain worth $1.52M as of Q2 2026.
  • Assenagon Asset Management sold 26 Iron Mountain shares in Q2 2026, an estimated $3.19K.
  • Iron Mountain made up ﹤0.01% of Assenagon Asset Management's portfolio in Q2 2026, its #900 holding.
  • Assenagon Asset Management first reported a position in Iron Mountain in Q4 2021 and has held it in 17 quarters since.
  • 1,165 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Assenagon Asset Management's 13F filing for Q2 2026, filed 8 Jul 2026.