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Friday's 115-point sell-off in the Dow Jones Industrial Average sent the 30-stock index into the red for the year.
Closing at 16,544, the Dow is now below its Dec. 31, 2013 close of 16,576.
Some market-watchers think this is just a brief blip in the 5-year old bull market. Others warn this could be the beginning of something much scarier.
One thing's for sure: volatility is back in the markets.
Yahoo Finance