1. A stock exchange is an organized market where stocks and other securities are traded. It allows public trading of company shares and raises capital for businesses.
2. The first stock exchange was founded in Amsterdam in the 17th century. Major stock exchanges today include the New York Stock Exchange, NASDAQ, London Stock Exchange, and the two largest exchanges in India - Bombay Stock Exchange and National Stock Exchange.
3. A stock exchange facilitates trading through a network of brokers and trading systems. It allows for public listing and trading of company shares, mobilizes household savings for corporate investment, and provides price discovery and liquidity in financial markets.