A trader is a profession that makes profits by buying and selling the difference. A trader can refer to a businessman or dealer. As a trader, a trader is a general trading institution or individual and can be the trustee of a trading institution. It can buy and sell financial products such as stocks and futures. Although foreign exchange traders in banks also use the English word Dealer, Dealer also refers to casino bankers and market makers who play opponents of ordinary traders in financial markets.

A trader is a person who acts as a principal or trades for the other party in a transaction. Place a buy or sell order in the hope of earning a difference (profit). In contrast, a broker is a person or a company that acts as an intermediary to bridge the gap between the buyer and the seller.

Excellent traders are the talents that banks, securities companies (investment banks), listed companies, funds and professional trading companies are most willing to spend a lot of money to recruit, because the level of traders has a great impact on the company's performance. Societe Generale of France and Bahrain Bank of England suffered huge losses because of traders' illegal operations. In many investment banks, trading is the most profitable business. For example, Goldman Sachs transactions account for 60% of total revenue.

Traders are divided into day traders and non-day traders. Non-day traders are very similar to domestic stock trading, because the stock in China is T+ 1, but there is no restriction on domestic bulls, while there is no restriction on foreign bears (it is very vivid to be long and short, and bulls buy first and bears sell first); I'm mainly talking about day traders here, because most people in China are not familiar with it. Day traders mainly rely on small fluctuations in a day to obtain spread profits, that is, through multiple T+0 operations, to accumulate profits.