ALTAROCK PARTNERS LP is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q4 2025, the fund manages $5.1B in reported equity holdings across 8 positions. The largest holdings are AMZN (33.1%), TDG (25.3%), MSFT (19.7%), MCO (8.2%), MA (6.1%). The portfolio is concentrated in Other (99.0%), Communication Services (1.0%). Data sourced from SEC EDGAR 13F filings (CIK 1631014).