Learn how to calculate the intrinsic value of a stock using Warren Buffett's proven method! Intrinsic value is the foundation of successful investing, helping you determine whether a stock is ...

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 ...

Operating margin is a profitability ratio that measures a company’s operating efficiency after cost of goods sold and operating expenses have been deducted from revenue. Operating income is often used ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Thomas J. Brock is a CFA and CPA with more than 20 years of experience in various areas ...