Standard deviation is a metric that shows the variability of a security’s returns over time. It can be used to gauge volatility based on past performance and compare a future return to past returns.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Andy Smith is a Certified Financial Planner ...

Scott Nevil is an experienced writer and editor with a demonstrated history of publishing content for Investopedia. He goes in-depth to create informative and actionable content around monetary policy ...

In a market flooded with applicants and cluttered with fake listings, AI can help you search smarter, apply better and stand out faster. Amanda Smith is a freelance journalist and writer. She reports ...

I travel frequently - sometimes to locations where pickpockets are common. I have tried various products and techniques to thwart them - such as money pouches or purses with built-in anti-theft ...

We test and rate the top video editing software for every type of user, from casual family event videographers to social media posters to studio professionals. I’ve been writing and editing technology ...

Federal student loan repayment plans underwent major changes on July 1, 2026, as a result of the One Big Beautiful Bill Act (OBBBA). The new Repayment Assistance Plan (RAP) and Tiered Standard plan ...

Business trip, road trip, or just a trip across town? Our top tested travel printers will let you print photos, documents, and more on the spot, wherever you are. Most of my current work for PCMag is ...