Nvidia (NASDAQ: NVDA) has gotten off to a bad start on the stock market in 2025, losing more than 10% of its value as of this writing, with Chinese artificial intelligence (AI) start-up DeepSeek's launch of a low-cost but capable AI model playing a key role in the semiconductor giant's troubles.

A warning of a U.S. stock market bubble, advises diversification into value stocks, commodities, and international equities to mitigate risk.

DeepSeek sent shockwaves through the AI investing world when it announced that it trained its R1 generative AI model for less than $6 million. Even more impressive is that some of its capabilities are on par with other leading generative AI models like ChatGPT and Claude.