A Bank rate survey show about half of Americans don't own stocks -- seriously impeding the average worker's retirement savings. Today's Stocks & Topics: Healthcare Companies, SWN - Southwestern Energy Co., Economic Calendar, Cost of Your Mortgage, GILD - Gilead Sciences Inc., OAS - Oasis Petroleum Inc., ORI - Old Republic International Corp., NVDA - NVIDIA Corp., P.E. Ratio, Cash Flow.
