Mark Massey - AltaRock Partners 13F Activity & Position Changes (Q2 2018)

According to the SEC 13F filed on Aug 17, 2026, the AltaRock Partners portfolio showed several notable changes in holdings as of quarter-end Jun 30, 2018. 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 2018, the filing reported:

New Buys - O'Reilly Automotive, Inc.

Increases - Booking Holdings Inc. Common St, Charter Communications, Inc.

Reductions - None reported

Complete Exits - Westinghouse Air Brake Technolo

These updates highlight how the portfolio adjusted across different sectors and market conditions, offering insights into allocation shifts and investment trends.

Date	Symbol	Name	Type	Change Qty	% Change	Value	Remaining
Q2 2018	BKNG Booking Holdings Inc. Common St	Booking Holdings Inc. Common St	Buy	+1,300	+1.3%	$209.77K	103,483
Q2 2018	CHTR Charter Communications, Inc.	Charter Communications, Inc.	Buy	+96,884	+16.4%	$201.26K	686,398
Q2 2018	ORLY O'Reilly Automotive, Inc.	O'Reilly Automotive, Inc.	Buy - Position Entry	+333,079	-	$91.12K	333,079
Q2 2018	WAB Westinghouse Air Brake Technolo	Westinghouse Air Brake Technolo	Sell - Position Exit	-666,426	-100.0%	$0.00	-