Accurately speaking, "market-sitting dealer" refers to an independent securities business legal person with certain economic strength and credibility as a chartered dealer in the securities market, who quotes the buying and selling price of a certain securities to public investors (that is, two-way quotation), accepts the buying and selling requirements of public investors with his own quotation, and conducts securities trading with public investors with his own funds and securities. Such securities companies are called "market-sitting companies" because they directly participate in securities trading and have specific restrictions and powers.

There are often several characteristics:

1. has strong financial strength, including total assets, registered capital, net assets, total deposits, background and structure of shareholders, etc.

2, professional technology, to be proficient in futures, options trading rules, procedures and various management methods, grasp the spot fundamental information of related varieties, skilled use of various analytical techniques and trading strategies, with considerable trading operation technology.

3. Priority of margin financing and securities lending, reduction and exemption of transaction tax and comprehensive access to information;

4. Short selling mechanism under specific conditions to stabilize the whole market;