Jackson Square Capital’s Iron Mountain IRM Stock Holding History

Jackson Square Capital’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	-5,999	Closed	-$612K	–	162
2025 Q3	$612K	Buy	+5,999	New	+$578K	0.13%	92

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

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

State Street Boston, Massachusetts $3.38T AUM 44.17% 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

Norges Bank Oslo, Norway $1T AUM

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

Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return

Jackson Square Capital's IRM Position: Q4 2025 in Review

Jackson Square Capital sold out of Iron Mountain (IRM) in Q4 2025, closing a stake of 5,999 shares — an estimated $612K sold.

Jackson Square Capital first reported a position in IRM in Q3 2025 and held it in 1 quarter. The position peaked at $612K in Q3 2025. 1,012 funds tracked by Wall St. Rank hold IRM as of Q4 2025.

Jackson Square Capital reported no remaining Iron Mountain position as of Q4 2025 after selling out during the quarter.
Jackson Square Capital sold 5,999 Iron Mountain shares in Q4 2025, an estimated $612K.
Jackson Square Capital first reported a position in Iron Mountain in Q3 2025 and held it in 1 quarter.
Jackson Square Capital's Iron Mountain position peaked at $612K in Q3 2025.
1,012 funds tracked by Wall St. Rank held Iron Mountain as of Q4 2025.

Based on Jackson Square Capital's 13F filing for Q4 2025, filed 21 Jan 2026.