MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q3 2015
Shares 71,580 Value ($000) $3,071 Avg Close — Range —
Q2 2015
Shares 121,130 Value ($000) $6,829 Avg Close — Range —
Q1 2015
Shares 118,730 Value ($000) $7,848 Avg Close — Range —
Q4 2014
Shares 129,184 Value ($000) $8,680 Avg Close — Range —