Trading has been halted on the New York Stock Exchange as of roughly 11:32am EDT because of a serious technical outage. USA Today notes that such events are very few and far between in the US, and it describes traders as "standing around looking at blank trading terminals." It's the day of computer headaches: A glitch grounded all United flights for two hours this morning. NBC News spoke with two unnamed government officials who say there's no indication this is a cyberattack and no apparent connection with the United outage.
The NYSE echoed this, tweeting, "The issue we are experiencing is an internal technical issue and is not the result of a cyber breach. We chose to suspend trading on NYSE to avoid problems arising from our technical issue." It added, "NYSE-listed securities continue to trade unaffected on other market centers." CNBC spoke with the director of floor operations for the exchange, who said, "It's been a little bit of a bumpy day. We had some technical problems even before the opening." (Read more NYSE stories.)