Unacceptable Options OPRA Trading Halt due to Software Upgrade at NYSE

NYSE's trading floor (Credit: Reuters/Mike Segar)

NYSE’s trading floor (Credit: Reuters/Mike Segar)

The trading halt across U.S. options markets on Monday was due to a bug in new software being rolled out, a unit of NYSE Euronext (NYX.N), which operates the system, said on Tuesday, which was reported by Reuters.

NYSE said the software issue – the latest in a string of recent glitches across various U.S. securities markets – which affected national best bid and offer prices put out by the Options Price Reporting Authority (OPRA), related to a coding change to make message processing more efficient.

The software was partially implemented on some of the system’s lines as part of the roll out when the bug was noticed, NYSE said in a note to clients.

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