MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

COHEN & STEERS, INC.'s Holding History (CIK: 0001284812)

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

Q3 2015
Shares 1,168,568 Value ($000) $50,143 Avg Close — Range —
Q2 2015
Shares 1,155,309 Value ($000) $65,136 Avg Close — Range —
Q1 2015
Shares 1,132,188 Value ($000) $74,838 Avg Close — Range —
Q4 2014
Shares 1,175,847 Value ($000) $79,005 Avg Close — Range —
Q3 2014
Shares 1,028,210 Value ($000) $78,987 Avg Close — Range —
Q2 2014
Shares 1,026,883 Value ($000) $73,504 Avg Close — Range —
Q1 2014
Shares 1,120,160 Value ($000) $73,169 Avg Close — Range —
Q4 2013
Shares 1,169,703 Value ($000) $77,352 Avg Close — Range —
Q3 2013
Shares 1,443,397 Value ($000) $104,257 Avg Close — Range —
Q2 2013
Shares 1,459,847 Value ($000) $97,591 Avg Close — Range —