Triasima Portfolio Management’s Iron Mountain IRM Stock Holding History

Triasima Portfolio 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	-2,450	Closed	-$211K	–	148
2025 Q1	$211K	Sell	2,450 -26,090	-91%	-$2.51M	0.04%	139
2024 Q4	$3M	Buy	+28,540	New	+$3.35M	0.58%	56
2024 Q3	–	Sell	-2,750	Closed	-$246K	–	111
2024 Q2	$246K	Sell	2,750 -200	-7%	-$16.2K	0.02%	129
2024 Q1	$237K	Sell	2,950 -750	-20%	-$54.3K	0.02%	129
2023 Q4	$259K	Sell	3,700 -500	-12%	-$31.4K	0.02%	123
2023 Q3	$250K	Buy	+4,200	New	+$257K	0.02%	122
2022 Q4	–	Sell	-28,470	Closed	-$1.25M	–	147
2022 Q3	$1.25M	Sell	28,470 -75	-0.3%	-$3.79K	0.1%	94
2022 Q2	$1.39M	Buy	+28,545	New	+$1.5M	0.1%	82

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

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

Cohen & Steers New York $57.6B AUM 8.03% 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

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

Norges Bank Oslo, Norway $935B AUM

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Triasima Portfolio Management's IRM Position: Q2 2025 in Review

Triasima Portfolio Management sold out of Iron Mountain (IRM) in Q2 2025, closing a stake of 2,450 shares — an estimated $211K sold.

Triasima Portfolio Management first reported a position in IRM in Q2 2022 and held it in 8 quarters. The position peaked at $3M in Q4 2024. 1,043 funds tracked by Wall St. Rank hold IRM as of Q2 2025.

Triasima Portfolio Management reported no remaining Iron Mountain position as of Q2 2025 after selling out during the quarter.
Triasima Portfolio Management sold 2,450 Iron Mountain shares in Q2 2025, an estimated $211K.
Triasima Portfolio Management first reported a position in Iron Mountain in Q2 2022 and held it in 8 quarters.
Triasima Portfolio Management's Iron Mountain position peaked at $3M in Q4 2024.
1,043 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2025.

Based on Triasima Portfolio Management's 13F filing for Q2 2025, filed 23 Jul 2025.