PSI is trading 3.99% up at $134.54 as semiconductor shares benefit from stronger risk appetite and tightening AI memory supply.

  • The Nasdaq Composite is up 1.28% and S&P 500 is up 0.85%.
  • Intel warned September 16 that AI-driven HBM shortages are worsening; memory prices are rising five- to sevenfold, while limited capacity is delaying projects.
  • The catalyst is sector-wide rather than company-specific; PSI is an Invesco semiconductor ETF.