Mark Massey - AltaRock Partners Portfolio Balances (Sep 30, 2025)

As of Sep 30, 2025, the AltaRock Partners portfolio balances reported a total equity value of $5.47B across 9 publicly traded holdings. These balances reflect the most recent SEC 13F filing dated Nov 14, 2025, providing an updated snapshot of assets under management.

The portfolio balances highlight AMAZON.COM INC (AMZN) as the single largest position, accounting for 30.3% of total equity value, followed by MICROSOFT CORP (MSFT), TRANSDIGM GROUP INC (TDG), MOODYS CORP (MCO), and others. Collectively, the top five holdings represent 92.5% of the portfolio, showing how capital is distributed among core positions and long-term investments.