Markwest Energy Partners L P

HAP Trading, LLC

Report date

6/30/2014

Quarter

2014 Q2

Filed

8/11/2014

Shares

332,183

Value ($000)

23,778

Weight

1.2%

2014 Q1 - 2014 Q2 (2 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2014 Q2	8/11/2014	23,778	1.2%	332,183	6/30/2014
2014 Q1	5/12/2014	12,650	0.8%	193,664	3/31/2014