ISE's options bonanza lures too many rivals; Market trailblazer is hurt by success as others eye the booming business.(News) From: Investment News | Date: November 6, 2006 | COPYRIGHT 2006 Crain Communications, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Byline: Aaron Elstein

NEW YORK - In just nine years, International Securities Exchange Holdings Inc. has graduated from obscure startup to the nation's leading options marketplace.

By offering fast trading over sophisticated computer networks, the New York-based firm has been instrumental in transforming the options business.

Earnings and sales soared as ISE (ISE) seized a one-third share of trading, and its stock price has nearly tripled since the...