Nvidia’s Stock Crash Solves a Wall Street Puzzle

DeepSeek, a Chinese artificial intelligence startup, has developed a model that can apparently answer questions as well as any chatbot in the US. It might even help answer a long-running question on Wall Street without being asked.

For many years, so-called quality stocks in the US, which are essentially shares of the most highly profitable companies, have been among the best performing investments. The MSCI USA Quality Index has returned an enviable 15% a year since 2015, including dividends, nearly 2 percentage points a year better than the S&P 500 Index.

Technology giants such as Nvidia Corp., Microsoft Corp. and Alphabet Inc., recently catapulted by AI’s promise, have been a big part of quality’s success. And here lies the question: In a mostly efficient market like that of the US, where risk and return are supposed to be closely related, why should investors earn above market returns for owning the most stable, dominant and profitable companies?

betting on quality