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
Q2 		$16.4M Buy
130,200
+79,300
+156% +$9.72M ﹤0.01% 2331
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 $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

Jane Street's IRM Position: Q2 2026 in Review

Jane Street reduced its Iron Mountain (IRM) stake by 44% in Q2 2026, selling an estimated $38.1M and leaving 396,541 shares worth $50.1M. The position accounts for ﹤0.01% of the portfolio, ranked #1430.

Jane Street first reported a position in IRM in Q2 2014 and has held it in 35 quarters since. The position peaked at $72.3M in Q1 2026. 1,170 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Jane Street held 396,541 shares of Iron Mountain worth $50.1M as of Q2 2026.
  • Jane Street sold 310,900 Iron Mountain shares in Q2 2026, an estimated $38.1M.
  • Iron Mountain made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #1430 holding.
  • Jane Street first reported a position in Iron Mountain in Q2 2014 and has held it in 35 quarters since.
  • Jane Street's Iron Mountain position peaked at $72.3M in Q1 2026.
  • 1,170 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.