Algorithmic Trading can be a complex subject. Keep your knowledge current with this glossary of key concepts, terminology, and technical indicators.
A technical indicator that shows the relationship between the volumes of advancing and declining issues on an exchange - in particular, the New York Stock Exchange. The upside/downside ratio is used to determine the momentum of the market at any particular time. The ratio is calculated as follows: Advancing Issues / Declining issues Where Advancing Issues = Total volume traded of securities that closed above their opening price Declining Issues = Total volume traded of securities that closed below their opening price