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Options Exchange CBOE Files for $300 Million IPO

The Chicago Board Options Exchange has filed for an initial public offering of up to $300 million as it converts from a member-owned organization to a publicly traded corporation.

The Chicago company, CBOE Holdings, did not say when it plans to go public or how many shares it hopes to sell.

CBOE, the largest options exchange in the U.S., has wanted to go public for a long time. It settled a dispute over payment for ownership with the CME Group, which operates the Chicago Mercantile Exchange and the Chicago Board of Trade, in August 2008, clearing the way for an IPO.