VinFast Auto's stock plummeted 5.08% during intraday trading on Wednesday, reflecting investor concerns over recent corporate and market developments.

The decline followed a regulatory filing showing that company director Tham Chee Soon reported no beneficial ownership of VinFast securities, which may have been interpreted by the market as a lack of confidence from an insider.

Simultaneously, broader industry analysis presented a mixed picture for electric vehicle demand. While rising gasoline prices due to geopolitical tensions could theoretically boost interest in EVs, experts noted that a significant shift in the U.S. market—where VinFast aims to compete—is unlikely unless fuel prices climb substantially higher. The market is also adjusting to the cooling of EV sales following the removal of a key federal tax incentive for buyers.