Mark Massey – AltaRock Partners Portfolio Activity & Recent Trades (Jun 30, 2025)
As of Jun 30, 2025, the AltaRock Partners portfolio activity showed several notable changes in holdings, according to the latest SEC 13F filing reported on Aug 14, 2025. The activity included new positions, additions to existing holdings, reductions, and complete exits, providing a clear view of how the portfolio evolved during the quarter.
During Q2 2025, the filing reported:
New Buys – None reported
Increases – Amazon.com, Inc. (AMZN), Hilton Worldwide Holdings Inc. (HLT), Moody's Corporation (MCO)
Complete Exits – None reported
These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.
AltaRock Partners Activity
| Date | Symbol | Type | Quantity |
|---|---|---|---|
Q2 2022Jun 30, 2022 | GOOGL Alphabet Inc. | Buy | +3,020+0.9% |
Q2 2022Jun 30, 2022 | MA Mastercard Incorporated | Sell | -2,800-1.1% |
Q2 2022Jun 30, 2022 | CHTR Charter Communications, Inc. | Sell | -57,997-9.1% |
Q2 2022Jun 30, 2022 | META Meta Platforms, Inc. | Sell - Position Exit | -108,039-100.0% |
Q1 2022Mar 31, 2022 | MSFT Microsoft Corporation | Buy | +915,133+53.2% |
Q1 2022Mar 31, 2022 | AMZN Amazon.com, Inc. | Buy - Position Entry | +127,246 |
Q1 2022Mar 31, 2022 | TDG Transdigm Group Incorporated | Buy | +70,225+5.2% |
Q1 2022Mar 31, 2022 | GOOGL Alphabet Inc. | Buy | +46,734+16.2% |
Q1 2022Mar 31, 2022 | META Meta Platforms, Inc. | Sell | -421,150-79.6% |
Q1 2022Mar 31, 2022 | CHTR Charter Communications, Inc. | Sell | -708,929-52.5% |
Q4 2021Dec 31, 2021 | V Visa Inc. | Buy | +1,487,588+17472.3% |
Q4 2021Dec 31, 2021 | CHTR Charter Communications, Inc. | Buy | +159,814+13.4% |
Q4 2021Dec 31, 2021 | MA Mastercard Incorporated | Buy | +75,000+42.6% |
Q4 2021Dec 31, 2021 | TDG Transdigm Group Incorporated | Buy | +24,872+1.9% |
Q4 2021Dec 31, 2021 | GOOGL Alphabet Inc. | Buy | +2,500+0.9% |
Q4 2021Dec 31, 2021 | META Meta Platforms, Inc. | Sell | -1,406,849-72.7% |
Q3 2021Sep 30, 2021 | MSFT Microsoft Corporation | Buy | +896,843+108.9% |
Q3 2021Sep 30, 2021 | TDG Transdigm Group Incorporated | Buy | +70,000+5.6% |
Q3 2021Sep 30, 2021 | CHTR Charter Communications, Inc. | Sell | -14,850-1.2% |
Q3 2021Sep 30, 2021 | GOOGL Alphabet Inc. | Sell | -34,040-10.6% |
Q3 2021Sep 30, 2021 | MCO Moody's Corporation | Sell | -105,358-46.1% |
Q3 2021Sep 30, 2021 | META Meta Platforms, Inc. | Sell | -299,144-13.4% |
Q2 2021Jun 30, 2021 | MSFT Microsoft Corporation | Buy - Position Entry | +823,333 |
Q2 2021Jun 30, 2021 | TDG Transdigm Group Incorporated | Buy | +303,619+31.9% |
Q2 2021Jun 30, 2021 | CHTR Charter Communications, Inc. | Buy | +172,374+16.7% |
Q2 2021Jun 30, 2021 | META Meta Platforms, Inc. | Buy | +57,500+2.6% |
Q1 2021Mar 31, 2021 | META Meta Platforms, Inc. | Buy | +465,800+27.2% |
Q1 2021Mar 31, 2021 | CHTR Charter Communications, Inc. | Buy | +137,451+15.4% |
Q1 2021Mar 31, 2021 | TDG Transdigm Group Incorporated | Sell | -72,962-7.1% |
Q4 2020Dec 31, 2020 | META Meta Platforms, Inc. | Buy - Position Entry | +1,711,882 |