China's Anta Sports Products Ltd. has agreed to buy a stake of about 29% in Puma SE for €1.5 billion ($1.8 billion), making it the German sports brand's biggest shareholder.The agreement will see Anta buy about 43 million Puma shares from Artémis, the holding compay of France's billionaire Pinault family, for €35 each. Puma closed Monday at €21.63. Puma's shares have fallen 32% over the past 12 months, giving the company a market capitalization of €3.2 billion.Fujian-based Anta is down 7% in Hong Kong over ...