MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

UBS Group AG's Holding History (CIK: 0001610520)

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

Q3 2015
Shares 9,873,525 Value ($000) $423,673 Avg Close — Range —
Q2 2015
Shares 5,353,179 Value ($000) $301,812 Avg Close — Range —
Q1 2015
Shares 5,857,793 Value ($000) $387,200 Avg Close — Range —
Q4 2014
Shares 8,173,551 Value ($000) $549,181 Avg Close — Range —