MARKWEST ENERGY PARTNERS L P

CUSIP: 570759100 Class: UNIT LP PARTN

American Assets Investment Management, LLC's Holding History (CIK: 0001389256)

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

Q3 2015
Shares 5,000 Value ($000) $215 Avg Close — Range —
Q2 2015
Shares 5,000 Value ($000) $282 Avg Close — Range —
Q1 2015
Shares 5,000 Value ($000) $331 Avg Close — Range —
Q4 2014
Shares 5,000 Value ($000) $336 Avg Close — Range —