In a crowded $50 billion file-sharing market, Dropbox is facing off against Microsoft, Apple, and Google. Today's Stocks & Topics: Low Volatility ETFs, USMV - iShares Edge MSCI Min Vol USA ETF, LB - L Brands Inc., High Dividends, GSK – Glaxo Smith Kline PLC ADR, CGC - Canopy Growth Corp., Capital Gains, Indexing, Research & Development, EXC - Exelon Corp., Emerging Markets, WH - Wyndham Hotels & Resorts Inc.