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 |
|---|---|---|---|
Q4 2020Dec 31, 2020 | V Visa Inc. | Sell | -2-0.0% |
Q4 2020Dec 31, 2020 | GOOGL Alphabet Inc. | Sell | -40,969-11.4% |
Q4 2020Dec 31, 2020 | TDG Transdigm Group Incorporated | Sell | -199,436-16.3% |
Q4 2020Dec 31, 2020 | CHTR Charter Communications, Inc. | Sell | -200,723-18.3% |
Q4 2020Dec 31, 2020 | MA Mastercard Incorporated | Sell | -210,691-54.5% |
Q4 2020Dec 31, 2020 | MCO Moody's Corporation | Sell | -436,187-65.6% |
Q3 2020Sep 30, 2020 | TDG Transdigm Group Incorporated | Buy | +32,629+2.7% |
Q3 2020Sep 30, 2020 | GOOGL Alphabet Inc. | Buy | +642+0.2% |
Q3 2020Sep 30, 2020 | MA Mastercard Incorporated | Sell | -25,000-6.1% |
Q3 2020Sep 30, 2020 | CHTR Charter Communications, Inc. | Sell | -55,695-4.8% |
Q3 2020Sep 30, 2020 | MCO Moody's Corporation | Sell | -70,639-9.6% |
Q2 2020Jun 30, 2020 | TDG Transdigm Group Incorporated | Buy | +182,265+18.0% |
Q2 2020Jun 30, 2020 | GOOGL Alphabet Inc. | Buy | +69,300+23.8% |
Q2 2020Jun 30, 2020 | CHTR Charter Communications, Inc. | Buy | +55,552+5.1% |
Q2 2020Jun 30, 2020 | MA Mastercard Incorporated | Buy | +50,000+13.8% |
Q2 2020Jun 30, 2020 | V Visa Inc. | Sell | -200,000-95.9% |
Q2 2020Jun 30, 2020 | MCO Moody's Corporation | Sell | -750,230-50.5% |
Q1 2020Mar 31, 2020 | MCO Moody's Corporation | Buy | +435,463+41.5% |
Q1 2020Mar 31, 2020 | TDG Transdigm Group Incorporated | Buy | +425,143+72.7% |
Q1 2020Mar 31, 2020 | GOOGL Alphabet Inc. | Buy | +60,943+26.5% |
Q1 2020Mar 31, 2020 | CHTR Charter Communications, Inc. | Buy | +14,000+1.3% |
Q1 2020Mar 31, 2020 | MA Mastercard Incorporated | Sell | -35,000-8.8% |
Q1 2020Mar 31, 2020 | V Visa Inc. | Sell | -43,000-17.1% |
Q1 2020Mar 31, 2020 | ORLY O'Reilly Automotive, Inc. | Sell - Position Exit | -93,918-100.0% |
Q4 2019Dec 31, 2019 | GOOGL Alphabet Inc. | Buy - Position Entry | +230,000 |
Q3 2019Sep 30, 2019 | CHTR Charter Communications, Inc. | Buy | +127,388+13.4% |
Q3 2019Sep 30, 2019 | TDG Transdigm Group Incorporated | Sell | -21,000-3.5% |
Q3 2019Sep 30, 2019 | V Visa Inc. | Sell | -31,000-11.0% |
Q3 2019Sep 30, 2019 | MCO Moody's Corporation | Sell | -80,000-7.1% |
Q3 2019Sep 30, 2019 | ORLY O'Reilly Automotive, Inc. | Sell | -214,811-69.6% |