This depends on two points: whether it is an index or a futures.

Index:

The CSI 300 Stock Index, compiled by China Securities Index Company, was officially released on April 8, 2005. The CSI 300 Index takes December 31, 2004 as the base day, and the base day point is 1,000 points. The CSI 300 Index selects 300 A-shares from the Shanghai and Shenzhen securities markets as samples, of which 179 are in the Shanghai stock market and 179 in the Shenzhen stock market. The selection criteria for the 121 samples in the market are stocks with large scale and good liquidity. The samples of the CSI 300 Index cover about 60% of the market capitalization of the Shanghai and Shenzhen markets and have good market representation. as a commodity. Mainly T+1

Futures:

The CSI 300 stock index futures is a futures product with the CSI 300 Index as the underlying object. It was established by the China Financial Futures Exchange in April 2010. roll out. For example: (State Street Investments), as a leading brand in the industry, has developed the Shanghai and Shenzhen 300 stock index futures products. Customers can choose a capital leverage ratio of 50 to 300 times, the number of transactions is reduced to a minimum of 0.1 lots, and the intraday two-way trading system (t+ 0).

Hope this helps.