Form 13F manager
ALTAROCK PARTNERS LP
Latest quarter 2026-06-30 · filed 2026-08-17 · reported total $4,240M · filing —
As filed on Form 13F — long US-listed positions only. No shorts, cash, bonds, or non-13F assets appear here.
Filed up to 45 days after quarter end; holdings may have changed since.
Positions
| Row | Issuer | Class | Put/call | Value | % of total | SH/PRN qty |
|---|---|---|---|---|---|---|
| 1 | AMZN · AMAZON.COM INC | COMM | — | $1,366M | 32.2% | SH 5,729,972 |
| 2 | TDG · TRANSDIGM GROUP INC | COMM | — | $1,167M | 27.5% | SH 875,755 |
| 3 | MSFT · MICROSOFT CORP | COMM | — | $871M | 20.5% | SH 2,334,482 |
| 4 | MASTERCARD INC-CLASS A | COMM | — | $393M | 9.3% | SH 764,507 |
| 5 | VISA INC-CLASS A SHRS | COMM | — | $287M | 6.8% | SH 836,470 |
| 6 | MOODYS CORP | COMM | — | $137M | 3.2% | SH 302,624 |
| 7 | ALPHABET INC-CL A | COMM | — | $15M | 0.4% | SH 41,994 |
| 8 | HILTON WORLDWIDE | COMM | — | $5.0M | 0.1% | SH 15,202 |
Filed rows (8) — as filed
| Row | Issuer | Class | Put/call | Value | % of total | SH/PRN qty | Source |
|---|---|---|---|---|---|---|---|
| 1 | AMAZON.COM INC | COMM | — | $1,366M | 32.2% | SH 5,729,972 | 0001104659-26-097527 |
| 2 | TRANSDIGM GROUP INC | COMM | — | $1,167M | 27.5% | SH 875,755 | 0001104659-26-097527 |
| 3 | MICROSOFT CORP | COMM | — | $871M | 20.5% | SH 2,334,482 | 0001104659-26-097527 |
| 4 | MASTERCARD INC-CLASS A | COMM | — | $393M | 9.3% | SH 764,507 | 0001104659-26-097527 |
| 5 | VISA INC-CLASS A SHRS | COMM | — | $287M | 6.8% | SH 836,470 | 0001104659-26-097527 |
| 6 | MOODYS CORP | COMM | — | $137M | 3.2% | SH 302,624 | 0001104659-26-097527 |
| 7 | ALPHABET INC-CL A | COMM | — | $15M | 0.4% | SH 41,994 | 0001104659-26-097527 |
| 8 | HILTON WORLDWIDE | COMM | — | $5.0M | 0.1% | SH 15,202 | 0001104659-26-097527 |
Changes from 2026-03-31 (rows of a security combined)
Reported change, not a confirmed trade: this compares quarter-end reports filed up to 45 days later, and the position may since have changed. Amendments, corporate actions, and changes in reporting scope can also move these rows. Value change compares period-end reported values; for continuing rows it includes market price movement.
0 new · ▲ 3 up · ▼ 5 down · 0 exited · 0 unchanged — by reported quantity, largest value change first
| Row | Change | Issuer | Class | Put/call | Value change | Qty change |
|---|---|---|---|---|---|---|
| 1 | ▼ down | MOODYS CORP | COMM | — | −$239M | SH −559,412 (−64.9%) |
| 2 | ▼ down | AMAZON.COM INC | COMM | — | −$210M | SH −1,837,974 (−24.3%) |
| 3 | ▲ up | MICROSOFT CORP | COMM | — | +$180M | SH +466,945 (+25.0%) |
| 4 | ▲ up | VISA INC-CLASS A SHRS | COMM | — | +$136M | SH +337,793 (+67.7%) |
| 5 | ▲ up | MASTERCARD INC-CLASS A | COMM | — | +$131M | SH +241,671 (+46.2%) |
| 6 | ▼ down | TRANSDIGM GROUP INC | COMM | — | +$113M | SH −33,413 (−3.7%) |
| 7 | ▼ down | ALPHABET INC-CL A | COMM | — | +$2.5M | SH −1,397 (−3.2%) |
| 8 | ▼ down | HILTON WORLDWIDE | COMM | — | +<$1M | SH −139 (−0.9%) |
Changes appear only where the prior quarter's validated report exists.