DeMark’s Sequential and Combo indicators, designed to identify market tops and bottoms, are giving a sell signal on the main U.S. stock benchmark for the first time since mid-2007, he said in a telephone interview. The S&P 500 began its 57 percent plunge from a record in October 2007.
“I’m pretty confident that in one to two weeks, the market will be in a descent,” said DeMark, founder and chief executive officer of Market Studies LLC. “It could be pretty sharp.”