13F filing recap · Q3 2025

What did AltaRock Partners buy in Q3 2025?

Reported stock-position changes between this filing and the previous one.

Stock value

$5.47B

Positions

Estimated turnover

8.5%

Turnover is a proxy: verified trade-origin share changes valued at period-end and divided by average reported stock value. SEC holdings reports do not disclose execution dates or prices. Corporate actions and unreconciled activity are excluded.

Quarter in review

AltaRock Partners added to its Amazon.com position during the quarter. It also substantially trimmed Alphabet Inc., while making slight reductions to Microsoft, Transdigm Group, Moody’s, Mastercard, Visa, Hilton Worldwide Holdings, and Fair Isaac Corp.

Increased positions

AMZNAmazon.com Inc$1.66Breported value+1.28M shares+20.4%

Reduced positions

MSFTMicrosoft Corporation$1.33Breported value-9.4K shares-0.4%TDGTransdigm Group Incorporated$1.29Breported value-3.6K shares-0.4%MCOMoody’s Corporation$452.05Mreported value-3.5K shares-0.4%MAMastercard Inc$332.23Mreported value-2.2K shares