LAMBDA lets you turn repeated Excel logic into reusable functions that update automatically across your entire workbook.

Caroline Banton has 6+ years of experience as a writer of business and finance articles. She also writes biographies for Story Terrace. Suzanne is a content marketer, writer, and fact-checker. She ...

OpenAI has launched ChatGPT add-ons for Excel and Google Sheets, enabling users to create, edit, and analyze data using natural language. Powered by GPT-5.5, the tool can generate formulas, clean data ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Return on investment (ROI) measures the amount of ...