Asian stocks stumbled on Thursday while the euro held near two-month highs against the dollar after surprisingly downbeat first-quarter economic growth in the United States – a key export destination for many of the region’s economies. Spreadbetters expected the equity markets to stabilize a little in Europe, forecasting Britain’s FTSE, Germany’s DAX and France’s CAC to open flat to slightly firmer. The disappointing news on the world’s biggest economy comes on top of a worrying slowdown in China and persistent worries about Europe as Greece scrambles to avoid bankruptcy.