Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

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I’ve been a devoted trackpad user since I first got my very own computer over 15 years ago. Since then I’ve tried dozens of mice, but none have truly been able to dethrone just how ingrained Apple’s ...

Finding the right talent in the tech industry is rarely a simple task, but sourcing high-quality Node.js developers can feel ...

Complex spine surgery involves careful coordination across disciplines, anticipation of complications, and decision-making incorporating numerous clinical and radiographic variables. As artificial ...

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Discover 17 new Excel features and functions for 2026, so you track edits and data faster. Including auto-refreshing pivots ...

A common source of errors in Excel is "the gap"—a situation where you add new data to the bottom of a list, but your formulas ...

Microsoft's spreadsheet program can do way more than you might imagine. These are the hacks and tricks you need to know.

Claire Boyte-White is the lead writer for NapkinFinance.com, co-author of I Am Net Worthy, and an Investopedia contributor. Claire's expertise lies in corporate finance & accounting, mutual funds, ...

Steven Nickolas is a writer and has 10+ years of experience working as a consultant to retail and institutional investors. Andy Smith is a Certified Financial Planner (CFP®), licensed realtor and ...

Here’s what you need to know about the latest updates to Windows 11 as they’re released from Microsoft. Now updated for KB5074109, released on Jan. 13, 2026. A Windows launch isn’t the end a process — ...