Best And Worst Performing S&P 500 Stocks In 2021 By: TalkMarkets October 09, 2021 at 11:33 AM EDT There are currently six members of the S&P500 that have rallied over 100% this year. At least six others have fallen by more than 25%. Read More >> Related Stocks: Activision Blizzard ConocoPhillips Devon Energy Las Vegas Sands Marathon Oil Moderna Inc Qualcomm, Inc. Take-Two Interactive Wynn Resorts