SPRX is trading at $45.78, down -1.72%, as Federal Reserve Chair Kevin Warsh’s Jackson Hole speech keeps investors cautious about interest-rate policy and growth-stock valuations.

  • Nasdaq futures are down 0.32%, while Marvell is falling 8% pre-market, weighing on technology sentiment.

  • The decline follows Nvidia’s outlook lifting the S&P 500 information-technology sector 3.4% and Nvidia 8.7% on August 27; the pullback appears to reflect profit-taking and macro caution rather than a reversal in AI demand.