Shares of Nvidia (NASDAQ: NVDA) suffered a double-digit decline in January, primarily due to the threat from Chinese artificial intelligence (AI) start-up DeepSeek. AI stocks plunged on Jan. 27 as investors reacted to the new chatbot DeepSeek R1 and DeepSeek's 22-page research paper that explained the engineering and technology behind the low-cost,

The biggest market loss in history happened, with Nvidia stock dropping 17%—and the entire internet thought this was hilarious.

A combination of these factors has led to the value of Nvidia stock plummeting on Monday (January 27). Forbes reports that Nvidia has seen the “single greatest one-day value wipe-out” of any company in Wall Street history. It lost almost $600bn (approximately £480bn) as its shares plunged 17% by close.

Nvidia (NASDAQ: NVDA) stock has been getting crushed today and has plunged over 17.4% in Monday trading. This is the biggest single-day drop for NVDA since the tech selloff began in August. Why? DeepSeek.