1. index scale: the CSI 1000 index includes 1000 companies with large scale in the A-share market, and the CSI 2000 index includes 2,000 companies ranked between1000-3,000.
2. The constituent stocks of CSI 1000 index are 1000 companies based on the circulating market value and transaction amount, while the constituent stocks of CSI 2000 index are based on the companies ranked between 1000-3000, and then the top 2000 companies are selected according to the market value, transaction amount and other factors.
3. Industry distribution: CSI 1000 index covers a wider range of industries, including industry, energy, consumption, medical care, science and technology, etc., while CSI 2000 index is more inclined to small and medium-sized enterprises and emerging industries, software, computers, electronics and other industries.