PRIME Summary February 2015

MIAX Options

Description

Improvement 0 Spread    0.05     0.07     0.10     0.11     0.12  0.01 0.02 0.03 0.04 0.05                               1                               â€                                  1                                1                                1                      â€                         1                      â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                        â€                       â€                       â€                       â€                       â€                       â€                       â€                       â€                       â€                       â€                       â€    Order>=50Ctx !@NBBO Non‐Cust >.05, <=.10 >.10, <=.20 >.20, <=.30                    â€                       â€                       â€                       â€                       â€                   â€                   â€                   â€                   â€                   â€                   â€                   â€                   â€                   â€                   â€    >.30,  <=.40 >.40,  <=.50 >.50               â€                  â€                  â€                  â€                  â€                 â€                 â€                 â€                 â€                 â€                 â€                 â€                 â€                 â€                 â€    Average  Average  Percent of  Total Contracts  Number of  order  Traded Participants initiator  receives                     100  1 100.00%                       63  3 0.00%                       77  2 38.96%                     229  1 100.00%                       94  1 100.00% Average  Percent of  contracts  initiator  receives 100.00% 0.00% 38.96% 100.00% 100.00% 19 .