Vinfast rallies on after becoming world’s third-most valuable automaker

(Reuters) – Shares of Vietnamese electric-vehicle maker Vinfast surged 30% in premarket trading on Monday, extending a rally from last week that more than quadrupled its market value to $160 billion.

The company made a blowout debut on Wall Street this month and has quickly grown in valuation to become the third-most valuable automaker – only behind Tesla and Toyota.

But Vinfast’s small amount of publicly available shares has made the stock prone to volatility, with shares jumping or slumping…