The Sino-US trade dispute has roiled financial markets including stocks and currencies, and the global trading of commodities from soybeans to coal over the past several weeks.
The weak pricing values the firm, which also makes internet-connected home appliances and gadgets, at about $54 billion, almost half its original $100 billion ambition earlier this year.
Xiaomi's float failed to attract strong interest among investors with the retail tranche gathering demand that was only 9.5 times the number of shares on offer, according to its filing on Friday.
By contrast, China Literature Ltd, the e-book arm of Chinese gaming and social media firm Tencent Holdings, late last year raised $1.1 billion for its Hong Kong IPO amid heavy demand, with the retail portion being 625 times oversubscribed.