It was launched via a SPAC and 99% of the shares are owned by one guy. Something like 90% of the investors pulled their money from the SPAC before it dropped onto the NASDAQ, leaving one person, Pham Nhat Vuong, the founder, with almost all the shares. Only 1% of total shares are available for active trading, which makes the price highly volatile.
This is like saying I'm the MVP and championship quarterback in a football league I own and created, where I'm also the only player. It's not a false statement, but it's also not a particularly valuable statement.
Key takeaway: Things went very wrong for VinFast and their SPAC. It wasn't supposed to be like this and doesn't indicate anything good for the company.
As I type this, the share price is tanking in after-hours trading. I'm sure it will be back up... then down... then back up... then down a whole bunch more before markets open in the morning.
Also, why pick on GM and Ford? It's market value was also higher than Mercedes Benz, BMW, Volkswagen, Stellantis, Honda, and Nissan too.