American investment management company Blackstone is under antitrust investigation over its deal with SOHO China, one of China’s largest real estate developers. The investigation may take six months to be carried out. If the deal is approved, Blackstone will pay over $3 billion to its Chinese partner, making it the New York-headquartered company’s biggest bet on China’s commercial real estate market. The deal was first announced in June, which helped boost SOHO China’s stock price dramatically from 2.45 Hong Kong Dollars ($0.31) on June 3 to 4.6 HK Dollars ($0.59) on June 17, an increase of nearly 88 percent. But since July 22, amid rumors that the Beijing authorities might investigate the deal, SOHO China’s stock price dropped from 4.12 HK Dollars ($0.53) to 3.22 HK Dollars ($0.41) on Friday, the last trading day, meaning around 22 percent of its market capitalization evaporated. “In the current situation in which the deal …