Susquehanna Portfolio Strategies’s Iron Mountain IRM Stock Holding History

Susquehanna Portfolio Strategies’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	$2.38M	Buy	+23,278	New	+$2.32M	0.04%	453
2025 Q4	–	Sell	-105,141	Closed	-$10.7M	–	1063
2025 Q3	$10.7M	Sell	105,141 -104,555	-50%	-$10.1M	0.17%	168
2025 Q2	$21.5M	Buy	209,696 +188,449	+887%	+$17.8M	0.47%	50
2025 Q1	$1.83M	Buy	+21,247	New	+$2.05M	0.79%	28
2024 Q4	–	Sell	-48,997	Closed	-$5.82M	–	170
2024 Q3	$5.82M	Sell	48,997 -42,300	-46%	-$4.52M	0.4%	75
2024 Q2	$8.18M	Hold	91,297	–	–	0.34%	82
2024 Q1	$7.32M	Hold	91,297	–	–	0.17%	160
2023 Q4	$6.39M	Buy	+91,297	New	+$5.73M	0.11%	241

Other funds holding IRM

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 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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return

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

Susquehanna Portfolio Strategies's IRM Position: Q1 2026 in Review

Susquehanna Portfolio Strategies opened a new position in Iron Mountain (IRM) in Q1 2026: 23,278 shares worth $2.38M. The stake represents 0.04% of the portfolio and ranks #453 among its holdings. This is a return to the name: Susquehanna Portfolio Strategies previously reported a position in IRM as recently as Q3 2025.

Susquehanna Portfolio Strategies first reported a position in IRM in Q4 2023 and has held it in 8 quarters since. The position peaked at $21.5M in Q2 2025. 1,083 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

Susquehanna Portfolio Strategies held 23,278 shares of Iron Mountain worth $2.38M as of Q1 2026.
Iron Mountain was a new Susquehanna Portfolio Strategies position in Q1 2026.
Iron Mountain made up 0.04% of Susquehanna Portfolio Strategies's portfolio in Q1 2026, its #453 holding.
Susquehanna Portfolio Strategies first reported a position in Iron Mountain in Q4 2023 and has held it in 8 quarters since.
Susquehanna Portfolio Strategies's Iron Mountain position peaked at $21.5M in Q2 2025.
1,083 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Susquehanna Portfolio Strategies's 13F filing for Q1 2026, filed 15 May 2026.