Options trading was halted sporadically across all U.S. markets today due to an OPRA data issue.
The Options Price Reporting Authority (OPRA) is the securities information processor for market information generated by trading of securities options in the United States.
Current OPRA participants include: AMEX, ARCA, BATS, BX, BSE, C2, CBOE, ISE, MIAX, NASDAQ, and PHLX.