Trade in stock market mean the transfer of a stock or security from a seller to a buyers. This require from a seller to a buyers. This require these two parties to agree on a price. Equities confer an ownership interest in a particular company. Participants in the stock market range from small individual stock investor to larger investors, who can be based anywhere in the world and may include banks, insurance companies, pension funds and hedge funds. Their buy or sellorders may be executed on their behalf by a stock exchange traders.
A potential buyers bids a specific price for a stock and a potential sell asks a specific price for the same stock. Buyingor selling at the market mean you will accept any ask price or bid price for the stock. When the bid and ask price match, a sale takes place, on a first come, first serve basis if there are multiple bidders at a given place.
The purpose of a stock exchange is to facilitate is to exchange of security between buyers and sellers, thus provide a marketplace. The exchange provide real time trading information on the list securities.