Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Thomas J. Brock is a CFA and CPA with more ...

Power Home Remodeling is a full-service exterior renovation company specializing in energy-efficient upgrades for homeowners. It provides replacement windows, siding, roofing, doors and insulation ...

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 ...

Purchasing power refers to the quantity of goods or services $20 can buy today. Inflation erodes purchasing power, making $10 buy fewer loaves of bread over 10 years. Investing in S&P 500 funds can ...