Technology stocks are retreating after a strong previous session, with investors showing caution ahead of Federal Reserve Chair Kevin Warsh's key speech at the Jackson Hole symposium. This macroeconomic uncertainty is contributing to a risk-off sentiment in the growth-oriented sector. Adding to the pressure, semiconductor stocks are underperforming, dragged down by a significant drop in Marvell Technology (MRVL) shares despite its recent strong earnings, as investors question the timing of revenue from its Google AI deal.