Mark Massey - AltaRock Partners 13F Activity & Position Changes (Q3 2015)

According to the SEC 13F filed on Aug 17, 2026, the AltaRock Partners portfolio showed several notable changes in holdings as of quarter-end Sep 30, 2015. 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 Q3 2015, the filing reported:

New Buys - None reported

Increases - Mastercard Incorporated, Moody's Corporation, Transdigm Group Incorporated

Reductions - Interactive Brokers Group, Inc., Visa Inc.

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
Q3 2015	IBKR Interactive Brokers Group, Inc.	Interactive Brokers Group, Inc.	Sell	-5,900	-17.8%	$1.07K	27,201
Q3 2015	MA Mastercard Incorporated	Mastercard Incorporated	Buy	+8,300	+2.1%	$36.38K	403,690
Q3 2015	MCO Moody's Corporation	Moody's Corporation	Buy	+267,595	+57.3%	$72.13K	734,510
Q3 2015	TDG Transdigm Group Incorporated	Transdigm Group Incorporated	Buy	+186,242	+43.0%	$131.66K	619,863
Q3 2015	V Visa Inc.	Visa Inc.	Sell	-29,660	-10.6%	$17.44K	250,416