https://www.reuters.com/article/us-alibaba-listing/alibaba-and-the-15-billion-question-amid-hong-kongs-protests-when-to-list-idUSKCN1V60RL >Hong Kong's political unrest is posing a dilemma for Alibaba Group Holding Ltd on the timing of its planned $15 billion listing in the city, with sources saying China's biggest e-commerce company is now considering several timetables.