Hong Kong Stocks sank in the morning session today as worries about the future of Germany’s Deutsche Bank hit the city’s financial firms. The Hang Seng Index shed 1.27 percent to 23,438.07 points by the break. The Benchmark Shanghai Composite Index edged up 0.14 percent to 3,002.81 points, while the Shenzhen Composite Index, which tracks stocks on china’s second exchange, climbed 0.28 percent to 1,991.45 points.