The stock market will not be as solidly bullish next year, one market pro told CNBC Monday, and that has him a little concerned.
"There's a little more risk in the market. The environment is not as clearly bullish as it had been. So we're getting a little worried," Mike Vogelzang, president and chief investment officer of Boston Advisors, said in an interview with "Street Signs."
A strong U.S. economy helped lift the market higher in 2014, with the Dow Jones Industrial Average up more than 4 percent just in the last five trading days. The S&P 500 has more than tripled from its March 2009 low.
Vogelzang said he believes the market could fall 8 percent to 10 percent next year.
"There's no question at some point during the year we'll have at least down period of 8 or 10 percent. It's almost inevitable in every year," he said.