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Traders work on the floor of the New York Stock Exchange (NYSE) in New York City. A glitch caused the NYSE to halt all trading on Wednesday. - 

Markets were up just a sliver this morning in early trading. Perhaps last Friday's jobs report had investors feeling sunny or the hope of continued Federal Reserve stimulus. Jim Dunigan, chief investment officer at PNC Wealth Management, joins Marketplace Morning Report host David Brancaccio to discuss the latest twists and turns in market psychology.

Follow David Brancaccio at @DavidBrancaccio