Nio's U.S.-listed shares rallied, climbing 9.27% to close at $5.54. In Hong Kong, shares rose as much as 10% in Friday morning trading.

Nio's U.S.-listed shares rallied, climbing 9.27% to close at $5.54. In Hong Kong, shares rose as much as 10% in Friday morning trading.

The rally comes in large part after the company unveiled its latest ES8 SUV on Aug. 21.