International Securities Exchange Stumps for NBBO

EXCHANGE WATCH

NEW YORK--The International Securities Exchange (ISE) currently calculates a National Best Bid and Offer for its market makers and recommends that the Options Price Reporting Authority (OPRA) calculate an NBBO on behalf of all of the options exchanges.

Currently the US options market is without a centralized NBBO. "It's a serious problem," says David Krell, president and CEO of the new electronic options exchange. "It's a problem that we all have to solve together."

"I don't think there's a

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