MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

TORTOISE CAPITAL ADVISORS, L.L.C.'s Holding History (CIK: 0001280965)

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

Q3 2015
Shares 12,269,400 Value ($000) $526,480 Avg Close — Range —
Q2 2015
Shares 12,166,373 Value ($000) $685,940 Avg Close — Range —
Q1 2015
Shares 11,388,160 Value ($000) $752,757 Avg Close — Range —
Q4 2014
Shares 10,243,947 Value ($000) $688,291 Avg Close — Range —
Q3 2014
Shares 9,908,857 Value ($000) $761,198 Avg Close — Range —
Q2 2014
Shares 9,364,363 Value ($000) $670,301 Avg Close — Range —
Q1 2014
Shares 7,716,347 Value ($000) $504,032 Avg Close — Range —
Q4 2013
Shares 6,658,288 Value ($000) $440,313 Avg Close — Range —
Q3 2013
Shares 6,100,415 Value ($000) $440,633 Avg Close — Range —
Q2 2013
Shares 4,769,116 Value ($000) $318,815 Avg Close — Range —