Rollercoaster Hold on tight for another wild ride. Listen to hourly updates now. news_stocksup.jpg l audio.gif http://start.real.com/rd?pid=wsj_gp&url=wsj_bus.smi&rpurl=http://smilparse.real.com/showcase/1pubs/channels/wsj/html/wsj_home.html wallstreetjournal.gif http://start.real.com/rd?pid=wsj_gp&url=wsj_bus.smi&rpurl=http://smilparse.real.com/showcase/1pubs/channels/wsj/html/wsj_home.html PLAY headline