ALTAROCK PARTNERS LP is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $4.1B in reported equity holdings across 8 positions. The largest holdings are AMZN (38.2%), TDG (25.5%), MSFT (16.8%), MCO (9.1%), MA (6.3%). The portfolio is concentrated in Other (99.7%), Communication Services (0.3%). Data sourced from SEC EDGAR 13F filings (CIK 1631014).