Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Dispersion is a fundamental measure of risk and opportunity in the stock market; it measures how differently stocks are performing, or are expected to perform. The Dispersion Index was launched in ...

Dispersion is an important statistical measure that quantifies the range of outcomes among the components of an index during a specific period. The S&P 500 Realized Dispersion Indices offer two ...

A scientific paper authored by a computer scientist and a senior engineer at Facebook has shown how your online social networks not only reveal who you’re going out with, but also when you’ll break up ...

The iris is the colored part of the eye. Pigment dispersion syndrome (PDS) occurs when pigment rubs off the back of the iris and floats freely in the eye. Pigment pieces can block the eye’s drainage ...

In the stock market, all is not quite as it seems. A slowdown in inflation has boosted investor confidence in the economy this year and, combined with an intense fervor for artificial intelligence, ...