MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

MAI Capital Management's Holding History (CIK: 0001040197)

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

Q3 2015
Shares 29,180 Value ($000) $1,252 Avg Close — Range —
Q2 2015
Shares 30,735 Value ($000) $1,733 Avg Close — Range —
Q1 2015
Shares 30,033 Value ($000) $1,985 Avg Close — Range —
Q4 2014
Shares 120,114 Value ($000) $8,070 Avg Close — Range —
Q3 2014
Shares 117,590 Value ($000) $9,033 Avg Close — Range —
Q2 2014
Shares 106,394 Value ($000) $7,616 Avg Close — Range —
Q1 2014
Shares 73,870 Value ($000) $4,825 Avg Close — Range —
Q4 2013
Shares 49,308 Value ($000) $3,261 Avg Close — Range —
Q3 2013
Shares 10,028 Value ($000) $724 Avg Close — Range —
Q2 2013
Shares 5,428 Value ($000) $363 Avg Close — Range —