You’ve used SUM for years. It adds numbers, does its job, and you probably don’t think twice about it. But while you’ve been clicking through filters and building messy helper columns, Excel has been ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Gordon Scott has been an active investor and ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...