A warning sign hangs from a fence at a construction site in the Canary Wharf financial, shopping and business district in London, U.K. (Photographer: Simon Dawson/Bloomberg)

JPMorgan Says Watch These Market Correlations for Warnings

(Bloomberg) -- A shift in correlation between U.S. equities and credit spreads, and a divergence between developed- and emerging-market currencies versus the dollar could be early warning signs of ...