April 14 (Reuters) - Hong Kong stocks retreated on Tuesday, breaking an eight-day winning streak, as Tencent Holdings Ltd slumped after its chief executive reduced his holdings in China's biggest social networking and online entertainment firm.
Tencent, whose market capitalisation topped $200 billion for the first time on Monday on the back of Hong Kong's recent bull run, tumbled 5.5 percent on Tuesday in its biggest single-day drop in nearly a year.
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