Electric-vehicle maker Nio slid as much as 6.8% on Wednesday after it announced plans to sell up to $2 billion in US-based shares, the biggest such offering since Didi's IPO. NYSE-listed shares in Nio fell as low as $37.81 on Wednesday from the previous day's close of $40.59. Shanghai-based Nio had previously signaled it would pursue a second listing in Hong Kong, following the lead of rivals like XPeng, which did so in June . Analysts cited by Bloomberg disagreed on whether the $2 billion in US shares indicated further hurdles in the Hong Kong listing process. Deutsche Bank's Edison...