The Federal Reserve just raised interest rates again, bumping up its short-term lending rate by a quarter-point on Wednesday, to 1.5%. It’s the third time the central bank has inched rates higher this year — and any time it does, it’s a closely watched and deeply analyzed move. So why do investors turn Fed-watching into... More From NerdWallet Fed Rate Hike: Here’s What to Do Cross These 4 Items Off Your Year-End Investing Checklist The Naughty and Nice of Holiday Shipping and Returns James Royal, Ph.D.