A utility function measures a consumer’s preference and satisfaction with different goods or services. As part of rational choice theory, it helps economists analyze how consumers make decisions to ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Charlene Rhinehart is a CPA , CFE, chair of ...

Global EV sales growth are expected to slow in 2026 as the U.S. demand falls and Chinese demand cools. Read more here.

Learn how the marginal propensity to save (MPS) impacts economic decisions and calculations. Discover its role in Keynesian economics and how to calculate MPS effectively.

Fruchter, G. (2026) Opportunism in Supply Chain Recommendations: A Dynamic Optimization Approach. Modern Economy, 17, 26-38.

The stock market often has its ups and downs but there are ways to mitigate risk. When the market gets rocky, many investors turn to utility stocks to hedge their riskier investments. These stocks ...

Get the components of the PHLX Utility Sector (^UTY) to help your investment decision from Yahoo Finance ...

A 15-year champion of consumer affairs, Yvette leads on telecoms content at Which?, helping consumers navigate the market and exposing bad practice. You might think a company that offers such varied ...

Generative AI is infiltrating everything you do online, including how you find information. If you're bored with traditional search, check out the top AI search engines we've tried.