By Ann Saphir

(Reuters) – CBOE Holdings Inc (CBOE.O: Quote, Profile, Research, Stock Buzz), which runs the oldest U.S. stock-options trading venue, said on Friday that quarterly earnings rose on a trading surge of its lucrative contracts for two of the most closely watched stock indexes.

Shares rose 4.3 percent to $39.10 on the Nasdaq.

But in a potential setback to the company’s future growth, CBOE Chief Executive William Brodsky indefinitely deferred plans to extend trading hours for one of the contracts – futures on the CBOE Volatility Index .

May 3 (Reuters) – CBOE Holdings Inc, which runs the
oldest U.S. stock-options trading venue, said on Friday that
quarterly earnings rose on a trading surge of its lucrative
contracts for two of the most closely watched stock indexes.

Shares rose 4.3 percent to $39.10 on the Nasdaq.

But in a potential setback to the company’s future growth,
CBOE Chief Executive William Brodsky indefinitely deferred plans
to extend trading hours for one of the contracts – futures on
the CBOE Volatility Index.

By Ann Saphir

(Reuters) – The Chicago Board Options Exchange blamed its second outage in a week on problems relating to preparations to extend its trading day, but executives reiterated their commitment to the project and said they would hire an outside consultant to help.

The start of trading in one of 25 business “clusters” of stock options was delayed Thursday morning for about 10 minutes, with the system unable to handle complex orders in all affected products for the first 34 minutes of the trading day, CBOE said in a memo to clients.