Shares of peer United Parcel Service UPS.N also gained 0.9%. By Shreyashi Sanyal and Bansari Mayur Kamdar Dec 17 (Reuters) - Wall Street's main indexes fell on Friday as big technology-related shares tumbled, reeling from the Federal Reserve's decision to end its pandemic-era stimulus faster. An announcement from the Fed this week signaling three quarter-percentage-point interest rate hikes by the end of 2022 to combat surging inflation put pressure on heavyweight tech stocks.