CBOE, CBSX And CFE Trading Schedule For Fourth Of July Holiday

CHICAGO, June 18, 2008 - The Chicago Board Options Exchange (CBOE), CBOE Futures Exchange (CFE) and CBOE Stock Exchange (CBSX) today announced the following trading schedule in observance of the Independence Day holiday(all times are Chicago time):

Thursday, July 3:
Chicago Board Options Exchange
Stock options and interest rate options will close at 12:00 noon, CDT.
Options on ETFs that normally close at 3:00 p.m. will close at 12:00 noon.
Options on ETFs that normally close at 3:15 p.m. will close at 12:15 p.m.
Index options that normally close at 3:15 p.m. will close at 12:15 p.m.

CBOE Futures Exchange (CFE)
CFE contracts will close at 12:15 p.m., CDT.

CBOE Stock Exchange (CBSX)
CBSX stock trading will close at 12:00 noon, CDT.
CBSX ETFs that normally close at 3:15 p.m. will close at 12:15 p.m.

Friday, July 4:
CBOE, CBSX and CFE will be closed.

CBOE, the largest U.S. options marketplace and the creator of listed options, is regulated by the Securities and Exchange Commission (SEC).For additional information about the CBOE and its products, access the CBOE website at www.cboe.com/.