Disadvantages 1: timeliness is not high.
Disadvantage 2: Private equity funds are generally small in scale and cannot squeeze into the top ten shareholders.
Disadvantage 3: it is very troublesome to turn over the annual report one by one.
2. It can also be inferred from the trading volume through special stock data software, but this data is confidential, and the use is charged. It is only speculation and not reliable.