It can be found in the stock daily limit of each website and the K-line chart of stock software. For example, great wisdom software, K-line chart, press F 10 key, click on the shareholders' entry and exit, you can view the shareholders' shareholding, and the top ten circulating shareholders can view the fund shareholding ratio and changes at a glance. In the lower right corner of the daily K-line chart, click the diagnostic bar to find out the shareholding ratio of large funds. Check and record frequently, and you can analyze the increase and decrease of large funds.

Stocks that are heavily held by a number of fund companies and account for more than 20% of the circulating market value are fund heavyweight stocks. That is, more than 20% of this stock is held by the fund.