On Thursday, Bloomberg reported that BYD planned to sell new shares worth as much as 20 percent of its Hong Kong-listed shares, and had submitted an application to China's securities watchdog.
"We do not have such a plan now," a BYD spokeswoman said on Friday. "This is pure speculation."
There have been rumors since last year about a possible BYD share issuance plan, but they are not true, she said.
Reporting by Samuel Shen and John Ruwitch. Editing by Jane Merriman