MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

D.A. DAVIDSON & CO.'s Holding History (CIK: 0001080107)

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

Q3 2015
Shares 3,700 Value ($000) $158 Avg Close — Range —
Q2 2015
Shares 7,035 Value ($000) $396 Avg Close — Range —
Q1 2015
Shares 7,140 Value ($000) $471 Avg Close — Range —
Q4 2014
Shares 6,997 Value ($000) $470 Avg Close — Range —
Q3 2014
Shares 6,906 Value ($000) $530 Avg Close — Range —
Q2 2014
Shares 6,975 Value ($000) $499 Avg Close — Range —
Q1 2014
Shares 6,885 Value ($000) $449 Avg Close — Range —
Q4 2013
Shares 6,900 Value ($000) $456 Avg Close — Range —
Q3 2013
Shares 7,500 Value ($000) $541 Avg Close — Range —
Q2 2013
Shares 7,800 Value ($000) $521 Avg Close — Range —