At the end of trading last week an email notification was meant to alert investors to a stock with an outsize number of unfilled buy orders. However, this email was delayed by seven minutes.
uch delays at close could have caused the stock to leap higher or drop lower than its final trading level. This led to NYSE sending traders a notification on Thursday, which said that if email alerts fail again it will use social media distribution channels to help address buy and sell imbalances."
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