WILLIAMS PARTNERS L P NEW

CUSIP: 96949L105 Class: COM UNIT LTD PAR

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

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

Q4 2015
Shares 1,227,378 Value ($000) $34,182 Avg Close — Range —
Q3 2015
Shares 2,894,215 Value ($000) $92,383 Avg Close — Range —
Q2 2015
Shares 1,400,000 Value ($000) $67,802 Avg Close — Range —