MPLX LP

Ticker: MPLX CUSIP: 55336V100 Class: COM UNIT REP LTD

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

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

Q1 2014
Shares 71,582 Value ($000) $3,507 Avg Close — Range —
Q4 2013
Shares 71,900 Value ($000) $3,202 Avg Close — Range —
Q3 2013
Shares 71,900 Value ($000) $2,620 Avg Close — Range —
Q2 2013
Shares 80,700 Value ($000) $2,971 Avg Close — Range —