MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q3 2015
Shares 14,150 Value ($000) $607 Avg Close — Range —
Q2 2015
Shares 6,304 Value ($000) $355 Avg Close — Range —
Q2 2014
Shares 7,713 Value ($000) $552 Avg Close — Range —
Q1 2014
Shares 6,624 Value ($000) $433 Avg Close — Range —
Q4 2013
Shares 1,770 Value ($000) $117 Avg Close — Range —