Google is testing the ability to click on a word in a featured snippet within Google Search and define that word. You can also copy the word, if you want. I think this is a Google Search test and ...

James Chen, CMT is an expert trader, investment adviser, and global market strategist. Option margin is the collateral (cash or securities) an investor must deposit before writing or selling options ...

Elvis Picardo is a regular contributor to Investopedia and has 25+ years of experience as a portfolio manager with diverse capital markets experience. Thomas J. Brock is a CFA and CPA with more than ...