In a nutshell, beta is a measure of how reactive a stock is to overall market movements – particularly those of the S&P 500 benchmark index. Obviously, stocks move individually, and for a variety of ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

A pre-release of software that is given out to a large group of users to try under real conditions. Beta versions have gone through alpha testing in-house and are generally fairly close in look, feel ...

This artist’s view shows the planet orbiting the young star Beta Pictoris. This exoplanet is the first to have its rotation rate measured. Its eight-hour day corresponds to an equatorial rotation ...

Planets acquire their rotation when they are formed, taking angular momentum from the impacts that shape them. There is a relationship between the mass of a planet and the speed of its spin, except ...

BETA-hemolytic streptococci of Lancefield Group B have been implicated in human disease almost from the time when the precipitin-grouping technic first came into use. 1–3 Since that time additional ...

B cells influence the pathogenesis of multiple sclerosis. Ocrelizumab is a humanized monoclonal antibody that selectively depletes CD20+ B cells. The annualized relapse rate was lower with ocrelizumab ...

Beta Technologies secured $375 million in Series B funding, totaling nearly $800 million in investments, to further develop and certify its Alia eVTOL aircraft. The Alia eVTOL, a battery-powered ...