LVMH shares rose the most in almost a quarter century after the owner of Louis Vuitton and Christian Dior unexpectedly returned to sales growth, suggesting a slump in luxury demand is easing. The stock surged as much as 14% in Paris, the biggest intraday gain since September 2001. LVMH, widely considered a bellwether, gave a lift to luxury stocks across Europe and beyond. Most Read from Bloomberg While LVMH’s third-quarter revenue rose just 1% on an organic basis, the increase snapped two quarters of de ...