USEC INC

CUSIP: 90333E207 Class: COMMON

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q4 2013
Shares 68,208 Value ($000) $413 Avg Close — Range —
Q3 2013
Shares 46,551 Value ($000) $490 Avg Close — Range —