Will the US economy recover in 2010? A minimal spanning tree study

► CY-IN-NC core and BM-EN-HC-TL-UT fringe in minimal spanning trees of Dow Jones US economic sector indices. ► Volatility shocks propagate from fringe to core of minimal spanning trees. ► Star-like minimal spanning trees during economic growth and chain-like minimal spanning trees during economic crisis. ► Emergence of star-like minimal spanning tree indicator for US economic recovery.