Mark Massey - AltaRock Partners 13F Activity & Position Changes (Q2 2016)

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, 2016. 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 2016, the filing reported:

New Buys - Berkshire Hathaway Inc. New, Charter Communications, Inc.

Increases - None reported

Reductions - Interactive Brokers Group, Inc., Moody's Corporation, Transdigm Group Incorporated

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.

Date	Symbol	Name	Type	Change Qty	% Change	Value	Remaining
Q2 2016	BRK-B Berkshire Hathaway Inc. New	Berkshire Hathaway Inc. New	Buy - Position Entry	+315,375	-	$45.66K	315,375
Q2 2016	CHTR Charter Communications, Inc.	Charter Communications, Inc.	Buy - Position Entry	+547,937	-	$125.28K	547,937
Q2 2016	IBKR Interactive Brokers Group, Inc.	Interactive Brokers Group, Inc.	Sell	-20,000	-73.5%	$255.00	7,201
Q2 2016	MCO Moody's Corporation	Moody's Corporation	Sell	-47,780	-4.6%	$92.96K	992,019
Q2 2016	TDG Transdigm Group Incorporated	Transdigm Group Incorporated	Sell	-291,067	-39.9%	$115.80K	439,148