Balyasny Asset Management
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Balyasny Asset Management’s Iron Mountain IRM Stock Holding History

Balyasny Asset 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
2025
Q4 		– Sell
-18,500
Closed -$1.89M – 3313
2025
Q3 		$1.89M Buy
+18,500
New +$1.78M ﹤0.01% 1826
2014
Q3 		– Sell
-541,000
Closed -$17.7M – 784
2014
Q2 		$17.7M Buy
541,000
+324,600
+150% +$8.81M 0.2% 126
2014
Q1 		$5.51M Buy
+216,400
New +$5.54M 0.06% 349
2013
Q4 		– Sell
-108,200
Closed -$3.6M – 555
2013
Q3 		$3.6M Buy
+108,200
New +$2.75M 0.05% 394

Other funds holding IRM

BlackRock
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 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

Balyasny Asset Management's IRM Position: Q1 2026 in Review

Balyasny Asset Management reduced its Iron Mountain (IRM) stake by 38% in Q1 2026, selling an estimated $7.77M and leaving 128,692 shares worth $13.1M. The position accounts for 0.02% of the portfolio, ranked #890.

Balyasny Asset Management first reported a position in IRM in Q4 2017 and has held it in 21 quarters since. The position peaked at $47.6M in Q1 2025. 1,084 funds tracked by Wall St. Rank hold IRM as of Q1 2026.

  • Balyasny Asset Management held 128,692 shares of Iron Mountain worth $13.1M as of Q1 2026.
  • Balyasny Asset Management sold 78,117 Iron Mountain shares in Q1 2026, an estimated $7.77M.
  • Iron Mountain made up 0.02% of Balyasny Asset Management's portfolio in Q1 2026, its #890 holding.
  • Balyasny Asset Management first reported a position in Iron Mountain in Q4 2017 and has held it in 21 quarters since.
  • Balyasny Asset Management's Iron Mountain position peaked at $47.6M in Q1 2025.
  • 1,084 funds tracked by Wall St. Rank held Iron Mountain as of Q1 2026.

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