Digital money is already a key battleground in finance-- with big tech, banks, and processors all vying to become a gateway into the platform-based economy.   Today's Stocks & Topics: Joe Davis - Vanguard's Global Chief Economist, Universities With Best Returns On Your Money, Mortgage Rates, Retail Sales, Withdrawal Rates, F - Ford Motor Co., 401k Holders in America, Utilities, NEE - NextEra Energy Inc., FCAU - Fiat Chrysler Automobiles N.V., Semiconductor Sector, GLD - SPDR Gold Shares, FDX - FedEx Corp., Consumer Sentiment.   Plus: Key Benchmark Numbers and Market Comments for: Gold, Oil, Gasoline, Treasury Yields.   TRIVIA QUESTION: "What is the little known FAMILY connection between Walgreens and one of its legendary competitors?