MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

OPPENHEIMER & CO INC's Holding History (CIK: 0000822581)

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

Q2 2015
Shares 38,044 Value ($000) $2,145 Avg Close — Range —
Q1 2015
Shares 40,637 Value ($000) $2,686 Avg Close — Range —
Q4 2014
Shares 41,329 Value ($000) $2,777 Avg Close — Range —
Q3 2014
Shares 46,322 Value ($000) $3,558 Avg Close — Range —
Q2 2014
Shares 58,514 Value ($000) $4,189 Avg Close — Range —
Q1 2014
Shares 61,562 Value ($000) $4,021 Avg Close — Range —
Q4 2013
Shares 57,283 Value ($000) $3,789 Avg Close — Range —
Q3 2013
Shares 43,356 Value ($000) $3,131 Avg Close — Range —
Q2 2013
Shares 40,541 Value ($000) $2,710 Avg Close — Range —