Shares of Nvidia Corp (NVDA) fell by 4% amid a broader downturn in the semiconductor sector, which saw significant put options activity. Other semiconductor stocks also experienced declines, with Advanced Micro Devices (AMD) and Broadcom Inc (AVGO) among those affected. The stock prices for Marvell Technology (MRVL) and Super Micro Computer Inc (SMCI) dropped by 5% and 9%, respectively. The volatility index (VIX) rose as investors reacted to the market's performance, suggesting increased uncertainty in the sector. The trend of put buying, particularly in semiconductor stocks, has been noted as a key factor influencing market sentiment this morning.