Hudson Bay Capital Management
IRM icon

Hudson Bay Capital Management’s Iron Mountain IRM Stock Holding History

Hudson Bay Capital 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
2019
Q2 		– Sell
-30,000
Closed -$1.06M – 582
2019
Q1 		$1.06M Buy
+30,000
New +$1.06M 0.01% 548

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VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $57.6B AUM 8.03% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Hudson Bay Capital Management's IRM Position: Q1 2026 in Review

Hudson Bay Capital Management opened a new position in Iron Mountain (IRM) in Q1 2026: 190,884 shares worth $19.5M. The stake represents 0.07% of the portfolio and ranks #192 among its holdings. This is a return to the name: Hudson Bay Capital Management previously reported a position in IRM as recently as Q3 2025.

Hudson Bay Capital Management first reported a position in IRM in Q2 2013 and has held it in 5 quarters since. 1,087 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Hudson Bay Capital Management held 190,884 shares of Iron Mountain worth $19.5M as of Q1 2026.
  • Iron Mountain was a new Hudson Bay Capital Management position in Q1 2026.
  • Iron Mountain made up 0.07% of Hudson Bay Capital Management's portfolio in Q1 2026, its #192 holding.
  • Hudson Bay Capital Management first reported a position in Iron Mountain in Q2 2013 and has held it in 5 quarters since.
  • 1,087 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.