Because Nvidia is still growing its revenue rapidly, using trailing earning metrics can give a false impression of where the company is headed. However, they're also useful in this case because its future had a wrench thrown into it thanks to DeepSeek's breakthrough.

The ramifications of Chinese startup DeepSeek, with its promise of delivering cheaper, more energy-efficient alternatives to harness artificial intelligence, have yet to be fully reflected in U.S. equities. That’s the thinking of Don Townswick, director of equity strategies at Conning Asset Management, which oversees $170 billion in assets.

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