Jim Simons
IRM icon

Jim Simons’s Iron Mountain IRM Stock Holding History

Jim Simons’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 		$245K Buy
+2,400
New +$239K ﹤0.01% 2867
2025
Q2 		– Sell
-85,763
Closed -$7.38M – 3715
2025
Q1 		$7.38M Buy
+85,763
New +$8.26M 0.01% 1185
2023
Q1 		– Sell
-80,600
Closed -$4.02M – 4183
2022
Q4 		$4.02M Sell
80,600
-53,900
-40% -$2.72M 0.01% 1648
2022
Q3 		$5.91M Sell
134,500
-143,200
-52% -$7.23M 0.01% 1325
2022
Q2 		$13.5M Buy
277,700
+161,400
+139% +$8.49M 0.02% 945
2022
Q1 		$6.44M Sell
116,300
-241,263
-67% -$11.5M 0.01% 1411
2021
Q4 		$18.7M Buy
357,563
+184,200
+106% +$8.71M 0.02% 751
2021
Q3 		$7.53M Sell
173,363
-199,200
-53% -$8.97M 0.01% 1204
2021
Q2 		$15.8M Buy
372,563
+258,100
+225% +$10.8M 0.02% 888
2021
Q1 		$4.24M Buy
+114,463
New +$3.83M 0.01% 1750
2020
Q2 		– Sell
-88,300
Closed -$2.1M – 3593
2020
Q1 		$2.1M Buy
+88,300
New +$2.67M ﹤0.01% 2026
2019
Q2 		– Sell
-89,800
Closed -$3.18M – 3645
2019
Q1 		$3.18M Sell
89,800
-36,900
-29% -$1.3M ﹤0.01% 2080
2018
Q4 		$4.11M Sell
126,700
-55,800
-31% -$1.83M ﹤0.01% 1841
2018
Q3 		$6.3M Buy
182,500
+175,486
+2,502% +$6.25M 0.01% 1652
2018
Q2 		$245K Buy
+7,014
New +$237K ﹤0.01% 3026
2018
Q1 		– Sell
-54,062
Closed -$2.04M – 3460
2017
Q4 		$2.04M Buy
+54,062
New +$2.15M ﹤0.01% 2332
2016
Q1 		– Sell
-337,763
Closed -$9.12M – 3439
2015
Q4 		$9.12M Buy
+337,763
New +$9.91M 0.02% 1056
2014
Q2 		– Sell
-813,494
Closed -$20.7M – 2867
2014
Q1 		$20.7M Buy
813,494
+76,207
+10% +$1.95M 0.05% 466
2013
Q4 		$20.7M Sell
737,287
-1,411,252
-66% -$36.2M 0.05% 447
2013
Q3 		$53.7M Sell
2,148,539
-77,255
-3% -$1.96M 0.13% 161
2013
Q2 		$54.7M Buy
+2,225,794
New +$71.8M 0.14% 151

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 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 $204B AUM 27.99% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jim Simons's IRM Position: Q1 2026 in Review

Jim Simons opened a new position in Iron Mountain (IRM) in Q1 2026: 2,400 shares worth $245K. The stake represents ﹤0.01% of the portfolio and ranks #2867 among its holdings. This is a return to the name: Jim Simons previously reported a position in IRM as recently as Q1 2025.

Jim Simons first reported a position in IRM in Q2 2013 and has held it in 21 quarters since. The position peaked at $54.7M in Q2 2013. 1,087 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Jim Simons held 2,400 shares of Iron Mountain worth $245K as of Q1 2026.
  • Iron Mountain was a new Jim Simons position in Q1 2026.
  • Iron Mountain made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2867 holding.
  • Jim Simons first reported a position in Iron Mountain in Q2 2013 and has held it in 21 quarters since.
  • Jim Simons's Iron Mountain position peaked at $54.7M in Q2 2013.
  • 1,087 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.