Mark Massey - AltaRock Partners 13F Activity & Position Changes (Q1 2017)

As of Mar 31, 2017, the AltaRock Partners portfolio activity showed several notable changes in holdings, according to the latest SEC 13F filing reported on May 15, 2026. 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 Q1 2017, the filing reported:

New Buys - None reported

Increases - Moody's Corporation

Reductions - Charter Communications, Inc., Mastercard Incorporated, Transdigm Group Incorporated, Westinghouse Air Brake Technolo

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
Q1 2017	CHTR Charter Communications, Inc.	Charter Communications, Inc.	Sell	-96,100	-20.0%	$126.19K	385,537
Q1 2017	MA Mastercard Incorporated	Mastercard Incorporated	Sell	-5,400	-1.3%	$44.80K	398,290
Q1 2017	MCO Moody's Corporation	Moody's Corporation	Buy	+4,100	+0.4%	$121.28K	1,082,436
Q1 2017	TDG Transdigm Group Incorporated	Transdigm Group Incorporated	Sell	-55,434	-9.4%	$118.02K	536,070
Q1 2017	WAB Westinghouse Air Brake Technolo	Westinghouse Air Brake Technolo	Sell	-3,400	-0.5%	$53.54K	686,426