U.S. markets ended Friday's session in the red as investors sold shares across the board. All ten of the S&P 500 sectors ended Friday's session down. Wells Fargo Advisors Chief Equity Strategist Stuart Freeman says the market declines could be attributed to weakness in emerging markets as well as profit-taking in the new year by U.S. investors who wanted to avoid large tax bills. Freeman says while the growth data out of the emerging market countries may be showing a slowdown, domestic data in the U.S. remains solid. Freeman says investors should take advantage of the sell-off and buy more shares in companies that are part of cyclically sensitive sectors and rotate out of defensive sectors. TheStreet's Ruben Ramirez has details from Wall Street.