Brokerage B is the B share of an index fund of brokerage, which belongs to the leveraged part of graded funds.

According to the evaluation scores of securities companies, the China Securities Regulatory Commission classifies securities companies into five categories: A, B, C, D and E, 1 1.

1, Class A companies have the highest risk management ability in the industry and can better control the risks of new businesses and new products;

2. Class B companies have high risk management capabilities in the industry and can better control the risks of business expansion in the market changes;

3. The risk management capability of Class C companies matches its existing business;

4. The risk management ability of Class D companies is low, and the potential risks may exceed the company's tolerable range;

5、E