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
2025 Q4	–	Sell	-7,256	Closed	-$740K	–	1746
2025 Q3	$740K	Sell	7,256 -1,542	-18%	-$149K	0.11%	239
2025 Q2	$902K	Buy	+8,798	New	+$829K	0.11%	223
2024 Q3	–	Sell	-3,269	Closed	-$350K	–	3232
2024 Q2	$293K	Buy	3,269 +26	+0.8%	+$2.1K	﹤0.01%	2007
2024 Q1	$260K	Buy	+3,243	New	+$235K	﹤0.01%	2092
2023 Q4	–	Sell	-6,111	Closed	-$383K	–	3299
2023 Q3	$363K	Buy	+6,111	New	+$373K	﹤0.01%	1781
2022 Q2	–	Sell	-7,718	Closed	-$428K	–	2533
2022 Q1	$428K	Buy	7,718 +2,809	+57%	+$134K	0.02%	1118
2021 Q4	$257K	Buy	+4,909	New	+$232K	0.01%	912
2020 Q1	–	Sell	-7,722	Closed	-$246K	–	1826
2019 Q4	$246K	Buy	+7,722	New	+$253K	﹤0.01%	1933
2019 Q2	–	Sell	-9,049	Closed	-$297K	–	2244
2019 Q1	$321K	Buy	+9,049	New	+$320K	﹤0.01%	1142
2018 Q2	–	Sell	-12,828	Closed	-$433K	–	2811
2018 Q1	$422K	Buy	+12,828	New	+$432K	﹤0.01%	1772
2017 Q3	–	Sell	-6,286	Closed	-$216K	–	1063
2017 Q2	$216K	Buy	+6,286	New	+$220K	0.04%	521

Other funds holding IRM

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Norges Bank Oslo, Norway $935B AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

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.