MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

CIBC Private Wealth Group, LLC's Holding History (CIK: 0001298088)

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

Q3 2015
Shares 3,416,971 Value ($000) $146,622 Avg Close — Range —
Q2 2015
Shares 2,051,636 Value ($000) $115,672 Avg Close — Range —
Q1 2015
Shares 1,660,970 Value ($000) $109,790 Avg Close — Range —
Q4 2014
Shares 1,519,570 Value ($000) $102,100 Avg Close — Range —
Q3 2014
Shares 1,210,187 Value ($000) $92,967 Avg Close — Range —
Q2 2014
Shares 1,209,242 Value ($000) $86,557 Avg Close — Range —
Q1 2014
Shares 1,327,751 Value ($000) $85,136 Avg Close — Range —