OPRA Data Issue Halts Options Exchanges
The Chicago Board Options Exchange, MIAX Options Exchange and Nasdaq OMX's NOM (Nasdaq Options Market), BX and PHLX marketplaces all reported trading halts as a result of OPRA's system issues. Nasdaq had earlier reported that its NOM systems were operating normally, despite some customers reporting delays in dissemination of some orders on NOM through data vendors.
CBOE halted trading between 1:40pm Eastern time and 1:52pm ET, when systems began operating normally again, though connectivity was
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