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Two Sigma Securities’s Iron Mountain IRM Stock Holding History

Two Sigma Securities’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
2024
Q4 		– Sell
-21,800
Closed -$2.59M – 2401
2024
Q3 		$2.59M Buy
21,800
+16,500
+311% +$1.76M 0.04% 460
2024
Q2 		$475K Sell
5,300
-1,600
-23% -$129K 0.01% 1590
2024
Q1 		$553K Buy
6,900
+1,300
+23% +$94.1K 0.01% 1505
2023
Q4 		$392K Buy
5,600
+2,000
+56% +$125K ﹤0.01% 1742
2023
Q3 		$214K Sell
3,600
-9,500
-73% -$581K ﹤0.01% 2268
2023
Q2 		$744K Buy
13,100
+4,400
+51% +$241K 0.01% 1168
2023
Q1 		$460K Buy
+8,700
New +$456K 0.01% 1321
2020
Q4 		– Sell
-9,500
Closed -$255K – 1805
2020
Q3 		$255K Buy
+9,500
New +$270K 0.01% 956
2020
Q1 		– Sell
-53,700
Closed -$1.71M – 1825
2019
Q4 		$1.71M Buy
53,700
+13,500
+34% +$443K 0.01% 791
2019
Q3 		$1.3M Sell
40,200
-6,700
-14% -$210K 0.01% 764
2019
Q2 		$1.47M Buy
46,900
+26,600
+131% +$872K 0.02% 576
2019
Q1 		$720K Buy
+20,300
New +$717K 0.01% 706
2018
Q4 		– Sell
-19,500
Closed -$673K – 2476
2018
Q3 		$673K Sell
19,500
-7,000
-26% -$249K ﹤0.01% 1236
2018
Q2 		$928K Buy
26,500
+19,100
+258% +$645K ﹤0.01% 1390
2018
Q1 		$243K Buy
+7,400
New +$249K ﹤0.01% 2144

Other funds holding IRM

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 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
Norges Bank
Norges Bank Oslo, Norway $935B AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return

Two Sigma Securities's IRM Position: Q4 2025 in Review

Two Sigma Securities sold out of Iron Mountain (IRM) in Q4 2025, closing a stake of 7,256 shares — an estimated $740K sold.

Two Sigma Securities first reported a position in IRM in Q2 2017 and held it in 11 quarters. The position peaked at $902K in Q2 2025. 1,006 funds tracked by Wall St. Rank hold IRM as of Q4 2025.

  • Two Sigma Securities reported no remaining Iron Mountain position as of Q4 2025 after selling out during the quarter.
  • Two Sigma Securities sold 7,256 Iron Mountain shares in Q4 2025, an estimated $740K.
  • Two Sigma Securities first reported a position in Iron Mountain in Q2 2017 and held it in 11 quarters.
  • Two Sigma Securities's Iron Mountain position peaked at $902K in Q2 2025.
  • 1,006 funds tracked by Wall St. Rank held Iron Mountain as of Q4 2025.

Based on Two Sigma Securities's 13F filing for Q4 2025, filed 17 Feb 2026.