In an updated statement on its website several hours after the debacle rattled Wall Street, the exchange identified more than 250 stock symbols that were affected. It also noted when it received key thresholds — known as limit-up, limit down bands — and the price range above or below which executions “will be busted.”
The New York Stock Exchange said some trades will be declared “null and void” after a glitch caused hundreds of securities to commence trading on Tuesday without an opening auction price.
The exchange said transactions in a swath of stocks will be reviewed as “clearly erroneous” under NYSE rules. That applies to trades in certain securities that did not conduct an opening auction, that occurred after the 9.30am bell but before certain thresholds were set that normally limit haywire swings, and that were executed too far from the reference price.
