WHITING USA TR I

CUSIP: 966389108 Class: TR U

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q1 2015
Shares 13,692 Value ($000) $1 Avg Close — Range —
Q3 2013
Shares 3,149 Value ($000) $14 Avg Close — Range —