1, depending on the length of the bottom cycle. For stocks with obvious bottom cycle, the author's experience is that the banker's position can be roughly estimated by multiplying the daily turnover in the bottom cycle by the bottom running time. Banker position = bottom cycle × active buying (ignoring retail buying). The longer the bottom cycle, the bigger the dealer's position; The larger the active buying volume, the more the dealers will absorb the goods. Therefore, if investors see the long-term sideways consolidation of stocks at the bottom, they usually silently absorb funds. In order to reduce the cost of buying, the main force constantly cleans short-term customers by throwing high and sucking low; But there is still a small amount of money involved. So during this period, the main force sucked the goods. At most, it only reaches about 1/3- 1/2 of the total transaction volume. Therefore, the active buying amount that ignores the buying amount of retail investors can be settled as total trading volume × 1/3 or total trading volume × 1/2. For example, there is a 50 million mid-cap stock that has entered sideways after a long-term decline. Recently, there has been a phenomenon of active trading. After analyzing the trend chart, it is determined that the lowest price in the previous period is the starting date of the main financing. From this starting date to the 250-day moving average, there have been 90 trading days, with a cumulative trading volume of 55 million shares and an active buying volume of about17 million or 27 million shares. Then we can estimate that the main financing amount in this period is17-27 million shares.

2, according to the stage turnover rate. There are stocks with active transactions and high turnover rate in the low position, but the stock price has not increased much (the set standard is that the phased increase is less than 50%, preferably less than 30%), which usually attracts goods for the bookmakers. The greater the turnover rate here, the more fully the main force will attract funds, and investors can focus on stocks whose "price" temporarily lags behind "quantity". The author's experience is that the turnover rate is based on 50%. Every time the stock price goes through 2, 3, 4 and other stages. The stock price trend will enter a new stage, which also indicates that the banker's position will change. The formula for calculating the banker's position by using the turnover rate is: stock circulation × (the turnover rate of individual stocks in a certain period-the turnover rate of the broader market in the same period); When the calculation result is divided by 3, the practical significance of this formula lies in that the amount that the main capital exceeds the turnover rate of the large market (that is, the average purchase amount) is usually the intervention of foresight funds, which is generally applicable to the long-term decline of unpopular stocks. Therefore, once the main force continues to absorb unpopular stocks, we can relatively easily calculate the positions held by the main force. It usually takes 60- 120 trading days. Because the opening period of a band dealer is generally about 55 days. For example, a stock has 80 million shares in circulation. From 2003 to the beginning of 2004, the turnover rate of a stock for 90 consecutive trading days was 250%, while the turnover rate of the market in the same period was 160%. Based on this, we can calculate: (1) 80 million× (250%-160%). 72 million shares/3 = 24 million shares. Therefore, the number of shares actually held by the dealer may be between 24 million shares. In other words, the banker's position may be about 30% of the circulation market. According to this analysis, we can draw the conclusion that the main force has participated in it for a short time and the stock price still has twists and turns.

3. Analyze the performance of the stock according to the market consolidation period. It is difficult to clearly define the delivery date of some stocks, because the delivery date is not obvious, or Zhuangzi is making a comeback, or the bookmakers are pulling and sucking, or they are constantly attracting funds during the decline. The positions of these stock makers can be judged by their performance during the consolidation period. Shanshan shares (600884) declined year by year in 2003, and the period of goods absorption was not obvious. The shock from May to June obviously belongs to the banker's behavior, and the market is adjusted from July to September. However, the stock continued to adjust, the number of households shrank significantly, and the banker was deeply involved, which was obviously quilted. Recently, the market has adjusted, and the stock has risen strongly. Then, the number of outstanding shares of the stock has reached 228 million shares. The main force of such large-cap stocks is freely regulated, and the amount of funds held can be seen.

4. From the time-sharing trend and single transaction. If the time-sharing trend is extremely incoherent and the single transaction volume is small, the dealer usually holds a large position and the chip concentration is usually high. For example, the time-sharing trend of ST Dongguo (600786) is mixed in the early stage, with discontinuous fluctuations, sparse transactions and long transaction intervals. Sometimes only one or two transactions are made in a few minutes, and sometimes only a few hundred lots are sold every day on the 54 million circulation disk. This is a typical chip taken away by the main force (60% of the position)

5. From the perspective of price deviation. If the transaction is not enlarged during the rising process, the stock remains in a balanced state, or even there is a deviation between quantity and price, the chips are usually concentrated in the hands of the main force. For example, since Haizheng Pharmaceutical (600267) rose in June last year, with the continuous rise of its share price, its trading volume has been shrinking, and its share price has reached a new high since its listing, but its volume and energy have not been significantly enlarged. As long as a small amount is released in the time-sharing trend, the stock price can be pushed up and the chip locking is good. The main position has been steadily pushed up, no.

6. After the rights are allocated, the rights can be filled quickly. February 4th is 00040 1 Jidong Cement's rights issue and ex-dividend date, and there is no abnormality in the trading on that day. On February 27th, the stock was listed by rights issue, but it was able to move against the market, indicating that all chips had been locked and the main positions were heavier. Subsequently, the troops continued to attack on a large scale.

7. Judge the banker's position through the per capita shareholding and the shareholding of major shareholders. The author's experience is that the per capita shareholding is about 2400, and the top ten shareholders account for more than 5% of the circulation, so it can be judged that the main position is important. For example, after June 2003, Conch held more than 5,000 shares per capita, and the major shareholder held about 8%, so it can be judged that the main position is important.