MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

Invesco Ltd.'s Holding History (CIK: 0000914208)

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

Q3 2015
Shares 54,485 Value ($000) $2,338 Avg Close — Range —
Q2 2015
Shares 67,741 Value ($000) $3,819 Avg Close — Range —
Q1 2015
Shares 75,659 Value ($000) $5,001 Avg Close — Range —
Q4 2014
Shares 86,750 Value ($000) $5,828 Avg Close — Range —
Q3 2014
Shares 84,071 Value ($000) $6,458 Avg Close — Range —
Q2 2014
Shares 75,146 Value ($000) $5,379 Avg Close — Range —
Q1 2014
Shares 72,816 Value ($000) $4,756 Avg Close — Range —
Q4 2013
Shares 1,976,463 Value ($000) $130,703 Avg Close — Range —
Q3 2013
Shares 2,300,963 Value ($000) $137,526 Avg Close — Range —
Q2 2013
Shares 1,420,004 Value ($000) $81,657 Avg Close — Range —