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Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Elvis Picardo is a regular contributor to Investopedia and has 25+ years of experience as a portfolio manager with diverse capital markets experience. Suzanne is a content marketer, writer, and ...

In the real world, simple interest is rarely used. When you deposit money into an interest-bearing account, or take out a line of credit, the interest that accumulates is added to the principal, and ...