MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

Note: Option positions (PUT/CALL) are excluded.

Q3 2015
Shares 2,200 Value ($000) $94 Avg Close — Range —
Q1 2015
Shares 1,411 Value ($000) $93 Avg Close — Range —
Q3 2014
Shares 82,313 Value ($000) $6,323 Avg Close — Range —
Q2 2014
Shares 78,415 Value ($000) $5,613 Avg Close — Range —
Q1 2014
Shares 4,519 Value ($000) $295 Avg Close — Range —
Q3 2013
Shares 302 Value ($000) $22 Avg Close — Range —