Something unusual happened in luxury this month. Three companies reported growing sales. Two of them saw their shares fall. Richemont posted sales up 20%, with growth in every region and the jewellery segment extending double-digit gains to seven consecutive quarters. The stock rallied about 10% before easing back roughly 3%. Burberry reported comparable sales up 5%, with every product division growing for the first time in three years. Yet its shares fell 5% and remain around 3.85% below their pre-report level. Likewise, Moncler beat expectations with revenue up 5%, but ...