AON PLC

CUSIP: G0408V102 Class: SHS CL A

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

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

Q3 2013
Shares 100 Value ($000) $7 Avg Close — Range —
Q2 2013
Shares 800 Value ($000) $51 Avg Close — Range —