It mainly includes energy commodities, basic raw materials and bulk agricultural products. Common commodities include crude oil, non-ferrous metals, agricultural products, iron ore and coal.
Block trading, also known as block trading, refers to the securities trading in which the single transaction declaration reaches the prescribed minimum, the buyer and the seller reach an agreement through agreement, and the transaction is confirmed by the exchange. Specifically, each exchange has a clear definition of block trading in its trading system or its commodity trading system, and they are different. Shanghai Stock Exchange redefined the block trading rules when it revised the trading rules of Shanghai Stock Exchange on 20 13, 18, and Shenzhen Stock Exchange revised them on 20 13.
According to the regulations, the stock exchange can adjust the minimum amount of block trades according to market conditions. In addition, the regulations of Shanghai and Shenzhen stock exchanges are different.
Among them, the Shanghai Stock Exchange stipulates that:
1. The number of declared single A-share transactions is more than 300,000 shares (inclusive), or the transaction amount is more than 2 million yuan (inclusive); The number of B shares (Shanghai) declared for a single transaction is more than 300,000 shares (inclusive), or the transaction amount is more than 200,000 US dollars (inclusive);
2. The declared amount of a single transaction of a fund block transaction is more than 2 million yuan (inclusive), or the transaction amount is more than 2 million yuan (inclusive);
3. The declared number of a single transaction in the large-scale transaction of treasury bonds and bond repurchase is above 10000 lots (inclusive), or the transaction amount is above 1000 million yuan (inclusive).
4. The declared number of single transactions of other bonds is above 65,438+0,000 lots (inclusive), or the transaction amount is above 65,438+0,000,000 yuan (inclusive). (On the original basis, the minimum single transaction amount of corporate bonds, corporate bond cash coupons and repurchase block transactions is reduced to: the number of transactions is above 65,438+0,000 lots (inclusive), or the transaction amount is above 65,438+0,000,000 yuan (inclusive).
5. For other bonds, the declared number of single transaction is not less than 65,438+0,000 lots, or the transaction amount is not less than 65,438+0,000,000 yuan.