What is the job of the bidding data specialist and what knowledge does it need?

bidding data specialist, do some daily search engine control and Baidu bidding data analysis

call auction collects several entrusted quotations or all entrusted quotations in a period of time, and generates a transaction price according to the principle of not higher than the bid price and not lower than the bid price, and the number of shares traded at this price is the largest, and this price is regarded as the transaction price of all entrusted transactions. Call auction can be started at 9:15, the order can be cancelled before 9: 25, and the bidding results are reported at 9: 25. The basic process of collecting the bid price is as follows:

Suppose that stock A has 6 buying orders and 5 selling orders before the opening, according to the principle of price priority, According to the order of buying price from high to low and selling price from low to high, they are arranged as follows:

serial number, quantity of entrusted buying price (lot), serial number, quantity of entrusted selling price (lot)

13.8213.525

23.76623.571

3. 3.65 4 3.62

4 3.67 4 3.656

5 3.54 6 5 3.76

6 3.753

According to the principle of not higher than the asking price and not lower than the asking price, First, the first transaction can be made, that is, the buying entrustment of 3.8 yuan and the selling entrustment of 3.52 yuan. If the wishes of the buyer and the seller are met at the same time, the transaction price must be between 3.52 yuan and 3.8 yuan, but the specific price depends on the subsequent transaction. After the transaction, the order of other consignments is as follows:

serial number, quantity of entrusted buying price (hand), serial number, quantity of entrusted selling price (hand)

113.523

23.76623.571

33.6543. 3.62

43.6743.656

53.54653.76

63.753

In the first transaction, because the number of selling orders was more than buying orders, according to the trading rules, all two buying orders with serial number 1 were sold, and three selling orders with serial number 1 remained.

the second transaction: the entrusted price of No.2 is not higher than 3.76 yuan, and the quantity is 6 lots. Among the selling orders, the number of orders with serial numbers 1-3 is exactly 6 lots, and its price will also meets the requirements, and it is just a transaction. The transaction price is in the range of 3.6-3.76 yuan, and the number of transactions is 6 lots. It should be noted that the range of the second transaction price is within the range of the first transaction price, and the interval is smaller. After the second transaction, the remaining entrustment situation is:

serial number, entrusted purchase price, quantity (hand), serial number, entrusted sale price, quantity (hand)

33.654

43.6743.656

53.54653.76

6 3.75 3

The third transaction: the price of the buying order with serial number 3 is not more than 3.65 yuan, while the price of the selling order with serial number 4 meets the requirements, so that the buying order with serial number 3 and the selling order with serial number 4 are just paired and the price is 3.65 yuan. Because the number of selling orders is greater than that of buying orders, only 4 lots of selling orders with serial number 4 have been sold. The entrustment situation after the third transaction is as follows:

serial number, entrusted buying price, quantity (lot), serial number, entrusted selling price, quantity (lot)

43.6743.652

53.54653.76

63.753

Over. After the above three consignments, since the highest bid price is 3.6 yuan and the lowest selling price is 3.65, there is no intersection between the bid price and the selling price, so this time the collective bidding price has been completed, and the final transaction price is the average price of the collective bidding price. The remaining other commissions will automatically enter the continuous bidding price after the opening.

in the above process, through matching again and again, the price range of the transaction is gradually reduced, while the number of transactions is gradually increased, until a specific transaction price is finally determined and the transaction volume is maximized. In the last matching, if the buying price and selling price are not equal, the transaction price will be the average of the two.

in this call auction, 12 lots were sold by three consignments, and the transaction price was 3.65 yuan. According to the regulations, the transaction price of all consignments in this transaction, whether buying or selling, was set at 3.65 yuan, and the opening price of stock A released by the exchange was 3.65 yuan, with 12 lots of transactions.

when the stock's bid price is low and the bid price is high, resulting in no stock transaction, the Shanghai stock market will leave its opening price vacant, and take the first price generated after continuous bidding as the opening price. However, Shenzhen stock market has other provisions on this:

If the highest bid price is higher than the closing price of the previous trading day, this price will be selected as the opening price; If the lowest asking price is lower than the closing price of the previous trading day, the price is selected as the opening price; If the lowest bid price is not higher than the closing price of the previous trading day and the highest bid price is not lower than the closing price of the previous trading day, the closing price of the previous trading day is selected as today's opening price.