Stocks finished the week with a three-day losing streak, making this the worst week of 2013 for the Dow. The Dow and the S&P 500 were down more than 3% from all-time highs reached on Aug. 2. A portfolio manager interviewed by CNBC had this to say about the market's recent instability:

"We've seen a brief correction of 3 to 5 percent off the recent highs and I would suspect the market to be choppy and sideways from here going into the next Fed meeting," said Matt Kaufler, portfolio manager of the Federated Clover Fund. "We're trying to add to more cyclically oriented sectors during this pullback."