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Sixth Street Partners’s Iron Mountain IRM Stock Holding History

Sixth Street Partners’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
Q2 		$539M Buy
+4,263,487
New +$523M 0.07% 222

Other funds holding IRM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Cohen & Steers
Cohen & Steers New York $63.2B AUM 17.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $204B AUM 27.99% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Sixth Street Partners's IRM Position: Q2 2026 in Review

Sixth Street Partners opened a new position in Iron Mountain (IRM) in Q2 2026: 4,263,487 shares worth $539M. The stake represents 0.07% of the portfolio and ranks #222 among its holdings.

1,004 funds tracked by Wall St. Rank hold IRM as of Q2 2026.

  • Sixth Street Partners held 4,263,487 shares of Iron Mountain worth $539M as of Q2 2026.
  • Iron Mountain was a new Sixth Street Partners position in Q2 2026.
  • Iron Mountain made up 0.07% of Sixth Street Partners's portfolio in Q2 2026, its #222 holding.
  • 1,004 funds tracked by Wall St. Rank held Iron Mountain as of Q2 2026.

Based on Sixth Street Partners's 13F filing for Q2 2026, filed 14 Aug 2026.