Wal-Mart plunge is tipping point for e-commerce: VC By: CNBC.com News October 14, 2015 at 12:50 PM EDT The technology industry's predictions for bricks-and-mortar retailers came to the fore with Wal-Mart's plunge on Wednesday, Geoff Lewis said. Read More >> Related Stocks: Amazon.com Office Depot Target Corp Wal-Mart Stores, Inc.