CBOE Holdings Statement On Today's Trading Issue

CBOE Holdings, Inc. (NASDAQ: CBOE) statement regarding this morning's trading issue:

This morning, a system issue delayed the opening of options trading at Chicago Board Options Exchange (CBOE) from 8:30 a.m. until 11:50 a.m. CT. Trading at C2 Options Exchange (C2), CBOE Futures Exchange (CFE) and CBOE Stock Exchange (CBSX) opened as scheduled. The malfunction that impacted CBOE was an internal systems issue and not the result of any outside influence. The issue, which affected validation of certain orders and the communication of cancel/fill reports, has been corrected.