Tesla (TSLA, Financials), the electric vehicle and energy company, was back in focus after Elon Musk rejected a report that executives had been asked to prepare for a separation of the company's China business.

Musk said the matter had never been discussed and called the report false. The report had tied the possible restructuring to speculation that Tesla and SpaceX could combine at some point.

Any such deal would face significant complications. SpaceX is a major U.S. defense contractor, while Tesla's Shanghai factory is its largest production facility and China is one of the company's most important markets.

The report also said Tesla had taken steps in recent years to create a clearer operational divide between its U.S. and China businesses. That structure was said to be intended to protect the U.S. operation in the event of a major geopolitical disruption.

Musk's denial removes some of the immediate speculation, but it does not end broader questions about the overlap between Tesla and SpaceX or how Tesla would manage rising U.S.-China tensions.

Investors will now watch for any formal company disclosures about Tesla's China operations, corporate structure or possible strategic ties with SpaceX.