MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q3 2015
Shares 143,352 Value ($000) $6,151 Avg Close — Range —
Q2 2015
Shares 163,518 Value ($000) $9,219 Avg Close — Range —
Q1 2015
Shares 196,192 Value ($000) $12,968 Avg Close — Range —
Q4 2014
Shares 396,346 Value ($000) $26,631 Avg Close — Range —
Q3 2014
Shares 313,419 Value ($000) $24,077 Avg Close — Range —
Q2 2014
Shares 321,743 Value ($000) $23,030 Avg Close — Range —
Q1 2014
Shares 174,380 Value ($000) $11,390 Avg Close — Range —
Q4 2013
Shares 162,457 Value ($000) $10,743 Avg Close — Range —
Q3 2013
Shares 162,090 Value ($000) $11,707 Avg Close — Range —
Q2 2013
Shares 156,151 Value ($000) $10,438 Avg Close — Range —