"Major Index Values Frozen on Websites, Trading Unaffected"

TL;DR
The calculations for the S&P 500 and Dow Jones Industrial Average halted for about an hour due to data feed issues, but trading continued normally and individual stock prices were unaffected. The CME Group confirmed the problem, which began at 10:41 a.m. ET and was resolved shortly before noon.
Want the full story? Read the original reporting
Read on CNBC