ONYX PHARMACEUTICALS INC

CUSIP: 683399109 Class: COM

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q3 2013
Shares 8,790 Value ($000) $1,096 Avg Close — Range —
Q2 2013
Shares 14,140 Value ($000) $1,228 Avg Close — Range —