Burnham & Co
IRM icon

Burnham & Co’s Iron Mountain IRM Stock Holding History

Burnham & Co’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
Q3 		$13K Buy
+117
New +$14K 0.01% 180

Other funds holding IRM

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.27T AUM 50.62% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return

Burnham & Co's IRM Position: Q3 2026 in Review

Burnham & Co opened a new position in Iron Mountain (IRM) in Q3 2026: 117 shares worth $13K. The stake represents 0.01% of the portfolio and ranks #180 among its holdings.

1,000 funds tracked by Wall St. Rank hold IRM as of Q3 2026.

  • Burnham & Co held 117 shares of Iron Mountain worth $13K as of Q3 2026.
  • Iron Mountain was a new Burnham & Co position in Q3 2026.
  • Iron Mountain made up 0.01% of Burnham & Co's portfolio in Q3 2026, its #180 holding.
  • 1,000 funds tracked by Wall St. Rank held Iron Mountain as of Q3 2026.

Based on Burnham & Co's 13F filing for Q3 2026, filed 12 Nov 2026.