Stocks making the biggest moves in the premarket: Biogen, Pfizer, Best Buy, Snap, iRobot & more

Stocks making the biggest moves in the premarket: Biogen, Pfizer, Best Buy, Snap, iRobot & more This is a developing news story. Please check back for updates: https://www.cnbc.com/2020/07/22/stocks-making-the-biggest-moves-in-the-premarket-biogen-pfizer-best-buy-snap-irobot-more.html Follow @CNBCnow for breaking news and real-time market updates Unsubscribe Manage Newsletters Terms of Service Join the CNBC Panel   Digital Products Feedback Privacy Policy CNBC Events   © 2020 CNBC LLC. All rights reserved. A property of NBCUniversal. 900 Sylvan Avenue, Englewood Cliffs, NJ 07632 Data is a real-time snapshot *Data is delayed at least 15 minutes. Global Business and Financial News, Stock Quotes and Market Data and Analysis. Data also provided by THOMSON REUTERS