Jane Street
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Jane Street’s Iron Mountain IRM Stock Holding History

Jane Street’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 		$5.2M Buy
50,900
+5,900
+13% +$587K ﹤0.01% 3452
2025
Q4 		$3.73M Buy
45,000
+8,100
+22% +$758K ﹤0.01% 3686
2025
Q3 		$3.76M Sell
36,900
-12,600
-25% -$1.21M ﹤0.01% 3855
2025
Q2 		$5.08M Buy
49,500
+9,200
+23% +$867K ﹤0.01% 2978
2025
Q1 		$3.47M Sell
40,300
-37,300
-48% -$3.59M ﹤0.01% 3496
2024
Q4 		$8.16M Sell
77,600
-41,800
-35% -$4.91M ﹤0.01% 2081
2024
Q3 		$14.2M Buy
119,400
+41,600
+53% +$4.45M ﹤0.01% 1564
2024
Q2 		$6.97M Sell
77,800
-4,400
-5% -$356K ﹤0.01% 2499
2024
Q1 		$6.59M Sell
82,200
-54,700
-40% -$3.96M ﹤0.01% 2259
2023
Q4 		$9.58M Buy
136,900
+44,900
+49% +$2.82M ﹤0.01% 2007
2023
Q3 		$5.47M Sell
92,000
-62,500
-40% -$3.82M ﹤0.01% 2494
2023
Q2 		$8.78M Buy
154,500
+46,600
+43% +$2.55M ﹤0.01% 2043
2023
Q1 		$5.71M Sell
107,900
-54,200
-33% -$2.84M ﹤0.01% 2267
2022
Q4 		$8.08M Sell
162,100
-84,300
-34% -$4.26M ﹤0.01% 1856
2022
Q3 		$10.8M Sell
246,400
-25,800
-9% -$1.3M ﹤0.01% 1605
2022
Q2 		$13.3M Buy
272,200
+78,700
+41% +$4.14M 0.01% 1447
2022
Q1 		$10.7M Buy
193,500
+77,400
+67% +$3.69M ﹤0.01% 1911
2021
Q4 		$6.08M Buy
116,100
+16,100
+16% +$761K ﹤0.01% 2552
2021
Q3 		$4.34M Sell
100,000
-55,700
-36% -$2.51M ﹤0.01% 2972
2021
Q2 		$6.59M Sell
155,700
-141,900
-48% -$5.95M ﹤0.01% 2249
2021
Q1 		$11M Buy
297,600
+240,000
+417% +$8.02M 0.01% 1459
2020
Q4 		$1.7M Sell
57,600
-13,900
-19% -$386K ﹤0.01% 3780
2020
Q3 		$1.92M Sell
71,500
-253,200
-78% -$7.2M ﹤0.01% 3108
2020
Q2 		$8.47M Buy
324,700
+307,600
+1,799% +$7.77M 0.01% 1313
2020
Q1 		$407K Buy
+17,100
New +$518K ﹤0.01% 3868

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

Jane Street's IRM Position: Q1 2026 in Review

Jane Street opened a new position in Iron Mountain (IRM) in Q1 2026: 707,441 shares worth $72.3M. The stake represents 0.01% of the portfolio and ranks #818 among its holdings. This is a return to the name: Jane Street previously reported a position in IRM as recently as Q2 2025.

Jane Street first reported a position in IRM in Q2 2014 and has held it in 34 quarters since. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Jane Street held 707,441 shares of Iron Mountain worth $72.3M as of Q1 2026.
  • Iron Mountain was a new Jane Street position in Q1 2026.
  • Iron Mountain made up 0.01% of Jane Street's portfolio in Q1 2026, its #818 holding.
  • Jane Street first reported a position in Iron Mountain in Q2 2014 and has held it in 34 quarters since.
  • 1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.