Mark Massey — AltaRock Partners LP

Mark MasseyAltaRock Partners LP

13F portfolio as reported for Q2 2026 · total reported value $4.24B · source: public SEC filings

Top 8 reported holdings
TickerCompanyShares Reported valuePortfolio weight
AMZNAmazon.com, Inc.5,729,972$1.37B32.2%
TDGTransDigm Group Incorporated875,755$1.17B27.5%
MSFTMicrosoft Corporation2,334,482$870.8M20.5%
MAMastercard Incorporated764,507$392.7M9.3%
VVisa Inc.836,470$287.0M6.8%
MCOMoody's Corporation302,624$137.1M3.2%
GOOGLAlphabet Inc.41,994$15.0M0.3%
HLTHilton Worldwide Holdings Inc.15,202$5.0M0.1%

13F filings are quarterly, published up to 45 days after quarter end, and report only long U.S.-listed equity positions. They are not a complete or current picture of any portfolio.