Exchanges Hit by ‘Triple Glitching' Week

Nasdaq experienced an issue last Wednesday, April 22, that resulted in the exchange pulling its quotes from both the UQDF (UTP Quotation Data Feed) and CQS (Consolidated Quotation System) consolidated datafeeds, according to an alert message distributed by the exchange.

Nasdaq officials decline to specify why its quotes were "pulled" from the consolidated tapes, but say the distribution of its Nasdaq Basic feed, which provides data comparable to that which the exchange contributes to the consolid

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