Peers Qualcomm Inc QCOM.O and Advanced Micro Devices Inc AMD.Oalso fell. By Devik Jain and Shreyashi Sanyal Dec 6 (Reuters) - The Dow and the S&P 500 index were set to open higher on Monday after declining sharply last week on Omicron and taper fears, with investors swapping technology and growth-heavy shares with banks, energy and economy-linked stocks. Wall Street's major indexes registered weekly declines on Friday, swinging wildly as investors digested Omicron news and Federal Reserve Chair Jerome Powell's hawkish comments about speedier taper to tackle surging inflation.