Gross margin (%) among largest #stocks $SPX $SPY 1.  APPLE INC. $AAPL: 38.1 2.  MICROSOFT CORPORATIO. $MSFT: 68.2 3.  ALPHABET INC. $GOOGL: 55.1 4.  FACEBOOK, INC. $FB: 81.7 5.  VISA INC. $V: 81.6 United States United States United States United States United States