Aigen Investment Management’s Iron Mountain IRM Stock Holding History

Aigen Investment 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
2026 Q1	$639K	Buy	+6,255	New	+$622K	0.16%	170
2025 Q4	–	Sell	-7,760	Closed	-$791K	–	793
2025 Q3	$791K	Buy	+7,760	New	+$748K	0.12%	257
2025 Q2	–	Sell	-23,104	Closed	-$1.99M	–	930
2025 Q1	$1.99M	Buy	+23,104	New	+$2.23M	0.32%	82
2023 Q4	–	Sell	-8,744	Closed	-$520K	–	926
2023 Q3	$520K	Buy	+8,744	New	+$534K	0.1%	338
2022 Q3	–	Sell	-19,334	Closed	-$941K	–	664
2022 Q2	$941K	Buy	+19,334	New	+$1.02M	0.16%	194
2021 Q3	–	Sell	-10,860	Closed	-$460K	–	562
2021 Q2	$460K	Buy	+10,860	New	+$455K	0.08%	247
2020 Q3	–	Sell	-8,250	Closed	-$215K	–	982
2020 Q2	$215K	Buy	+8,250	New	+$208K	0.03%	692

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

Aigen Investment Management's IRM Position: Q1 2026 in Review

Aigen Investment Management opened a new position in Iron Mountain (IRM) in Q1 2026: 6,255 shares worth $639K. The stake represents 0.16% of the portfolio and ranks #170 among its holdings. This is a return to the name: Aigen Investment Management previously reported a position in IRM as recently as Q3 2025.

Aigen Investment Management first reported a position in IRM in Q2 2020 and has held it in 7 quarters since. The position peaked at $1.99M in Q1 2025. 1,082 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

Aigen Investment Management held 6,255 shares of Iron Mountain worth $639K as of Q1 2026.
Iron Mountain was a new Aigen Investment Management position in Q1 2026.
Iron Mountain made up 0.16% of Aigen Investment Management's portfolio in Q1 2026, its #170 holding.
Aigen Investment Management first reported a position in Iron Mountain in Q2 2020 and has held it in 7 quarters since.
Aigen Investment Management's Iron Mountain position peaked at $1.99M in Q1 2025.
1,082 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Aigen Investment Management's 13F filing for Q1 2026, filed 15 May 2026.