Dark Forest Capital Management’s Iron Mountain IRM Stock Holding History

Dark Forest Capital Management’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 Q2	–	Sell	-4,994	Closed	-$430K	–	1349
2025 Q1	$430K	Buy	+4,994	New	+$481K	0.02%	971
2024 Q4	–	Sell	-2,780	Closed	-$330K	–	1127
2024 Q3	$330K	Buy	+2,780	New	+$297K	0.04%	563
2023 Q3	–	Sell	-4,597	Closed	-$261K	–	1185
2023 Q2	$261K	Buy	+4,597	New	+$252K	0.02%	859
2023 Q1	–	Sell	-50	Closed	-$2.49K	–	1324
2022 Q4	$2.49K	Buy	+50	New	+$2.52K	﹤0.01%	934
2022 Q2	–	Sell	-103	Closed	-$6K	–	1117
2022 Q1	$6K	Buy	103 +92	+836%	+$4.38K	﹤0.01%	1086
2021 Q4	$1K	Sell	11 -483	-98%	-$22.8K	﹤0.01%	1343
2021 Q3	$21K	Sell	494 -7,848	-94%	-$353K	0.01%	796
2021 Q2	$353K	Buy	+8,342	New	+$350K	0.15%	66

Other funds holding IRM

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

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Dark Forest Capital Management's IRM Position: Q2 2025 in Review

Dark Forest Capital Management sold out of Iron Mountain (IRM) in Q2 2025, closing a stake of 4,994 shares — an estimated $430K sold.

Dark Forest Capital Management first reported a position in IRM in Q2 2021 and held it in 8 quarters. The position peaked at $430K in Q1 2025. 1,045 funds tracked by Wall St. Rank hold IRM as of Q2 2025.

Dark Forest Capital Management reported no remaining Iron Mountain position as of Q2 2025 after selling out during the quarter.
Dark Forest Capital Management sold 4,994 Iron Mountain shares in Q2 2025, an estimated $430K.
Dark Forest Capital Management first reported a position in Iron Mountain in Q2 2021 and held it in 8 quarters.
Dark Forest Capital Management's Iron Mountain position peaked at $430K in Q1 2025.
1,045 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2025.

Based on Dark Forest Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.