The problem of buying and selling stocks has gone through a process from total prohibition to gradual relaxation. 1993 10 the CPC central Committee and the State Council have stipulated that leading cadres at or above the county (department) level in party and government organs are not allowed to buy or sell stocks.

First, the competent department of a listed company and the competent department of a state-owned holding unit of a listed company with inside information, and their parents, spouses, children and spouses are not allowed to buy or sell shares of listed companies managed by the above-mentioned competent departments;

Second, the staff of the State Council Securities Regulatory Authority and its dispatched offices, stock exchanges and futures exchanges, their parents, spouses, children and their spouses are not allowed to buy or sell stocks;

Third, my parents, spouses, children and their spouses work in securities companies and fund management companies, or in accounting (auditing) firms, law firms, investment consulting institutions, asset appraisal institutions and credit evaluation institutions with securities and futures qualifications granted by the State Council securities regulatory authority. These party and government officials are not allowed to buy or sell shares of listed companies that have business dealings with the above-mentioned institutions.

Extended data:

Trading rules:

There are also certain regulations on the number of stocks to be bought and sold: that is, the number of stocks entrusted to buy must be an integer multiple of one hand (each hand 100 shares), but the number of stocks entrusted to sell must not be an integer multiple of 100 shares. The buying or selling price must be within 10% of yesterday's closing price.

Price priority and time priority are implemented in stock trading: during the continuous bidding period, because many investors may buy and sell the same stock at the same time, the exchange has formulated the principle of "price priority and time priority". If the current price of a stock is 5.66 yuan, if investor A enters the purchase price of 5.66 yuan at this time, investor B also enters the purchase price of 5.67 yuan.

Then investor B's declaration takes precedence over investor A's declaration. If everyone declares the same purchase price, the first to enter the order will be the first to make a deal. The same is true for selling stocks. If the current price of a stock is 5.66 yuan, A enters the selling price of 5.66 yuan, and B also enters the selling price of 5.65 yuan, then B's declaration takes precedence over A's declaration.

Baidu encyclopedia-stock trading