Normally, it is easy to detect when there are 10,000 shares, but it also depends on the size of the market. Large-cap stocks may be easily detected when there are 50,000 shares.

If the banker makes less profit at the current price, or even the stock price is lower than the banker's cost of establishing the market, then retail investors will have a more promising profit prospect if they buy at this time; if the banker can make a profit at the current price If the profit is high, then retail investors will generally not gain much benefit by entering the market at this time, because the dealer will no longer deliberately raise the stock price, but will consider the timing of shipment. Therefore, calculating the banker's cost helps retail investors determine the banker's next course of action.

How to judge the strength of the banker

(1) Calculate the banker’s position cost

The banker is just like doing business, there will also be investment costs, use The balance of the banker's final income minus costs is his final profit. Before choosing a market maker, retail investors should first do the math for the market maker and check whether the market maker has room for profit at the current price. If the banker makes less profit at the current price, or even the stock price is lower than the banker's cost of establishing the market, then retail investors will buy at this time, and the profit prospects will be considerable; if the banker can make huge profits at the current price, then retail investors will buy at this time. Generally speaking, there will not be much profit in the market, because the dealer will no longer deliberately raise the stock price, but will consider the timing of shipment. Therefore, calculating the banker's cost helps retail investors judge the banker's next course of action.

However, we cannot calculate most of these types of costs. Generally, what we can estimate is only the banker's position cost. There are probably the following ways to calculate the banker's position cost.

1. General method

Select the sum of the lowest price, the highest price during the purchase period and the closing price of the most common middle week, and then divide it by 3. This method is simple and practical.

Generally, if the time of holding positions is extended, interest, labor, public relations, and opportunity costs will increase. At this time, the cost will rise by about 15%; if the dealer holds the position for two or three years, the calculation cost will still be higher. It is appropriate to float by 20% to 35%.

2． Calculate turnover rate

Using turnover rate to calculate the banker's position cost is the most direct and effective method. For old stocks, when there is an obvious big bottom area to increase the volume, it can be used as the cost area for bookmakers to hold positions. The specific calculation method is: calculate the daily turnover rate until the turnover rate reaches 100%. The average market price is the banker's position cost area. For new stocks, many market makers choose to intervene heavily on the first day of listing. Generally, the average price on the first day of listing or the average price in the first week of listing can be used as the banker's cost area.