Industry WIKI

A capitalization-weighted (or cap-weighted) index, also called a market-value-weighted index is a stock market index whose components are weighted according to the total market value of their outstanding shares. Every day an individual stock's price changes and thereby changes a stock index's value. The impact that individual stock's price change has on the index is proportional to the

A trading curb (also known as a circuit breaker in Wall Street parlance) is a financial regulatory instrument that the relevant stock exchange organization implements to prevent stock market crashes. Since their inception, circuit breakers have been modified to prevent both speculative gains and dramatic losses within a small time frame. When triggered, circuit breakers either stop tradi