WILLIS GROUP HOLDINGS PUBLIC

CUSIP: G96666105 Class: SHS

Magnetar Financial LLC's Holding History (CIK: 0001352851)

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

Q1 2014
Shares 67,725 Value ($000) $2,989 Avg Close — Range —
Q4 2013
Shares 65,172 Value ($000) $2,920 Avg Close — Range —