ISE Price Glitch Sparks Opra BBO Error

According to ISE, the quotes sent out were not inaccurate and data distributed direct to trading firms and vendors from the exchange rather than via Opra reflected the full state of ISE's order book.

However, the problem with the ISE data distributed via Opra meant that firms using smart-routing technology to direct trades to specific venues based on whether they have the best bid or offer according to the Opra feed may have sent trades to exchanges that were not necessarily able to provide t

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