MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q3 2015
Shares 5,680 Value ($000) $244 Avg Close — Range —
Q2 2015
Shares 13,162 Value ($000) $742 Avg Close — Range —
Q3 2014
Shares 4,904 Value ($000) $377 Avg Close — Range —
Q2 2014
Shares 28,446 Value ($000) $2,036 Avg Close — Range —
Q4 2013
Shares 3,785 Value ($000) $250 Avg Close — Range —