The chip maker is expected to deliver a clearer view of its long-term AI strategy, but the company might not be able to give information on what matters most to investors.

The U.S. stock market is slumping on Thursday as Nvidia and other superstars swept up in the mania around artificial-intelligence technology keep weakening. The S&P 500 fell 1.1% in midday trading and pulled further from its all-time high set late last month.