NASDAQ, an electronic market for securities that began in 1971, has grown to become the largest stock market in the USA, listing more than 3000 companies. It was the first screen-based trading system to operate without a physical trading floor.
OMX is a company that owns and operates several stock exchanges in Scandinavia, the Baltic States, and Armenia. It also markets advanced electronic trading systems for derivatives products used worldwide. OMX was acquired by NASDAQ in 2008.
