Short Interest in VinFast Auto Climbs 19.9% in February VinFast Auto Ltd. experienced a significant rise in short interest, growing by 19.9% in February to 2.35 million shares. This marks a notable increase from January's 1.96 million. With a daily trading volume of 850,800 shares, the short-interest ratio now stands at 2.8 days, reflecting heightened market scrutiny.12