b is the abbreviation of buy, which means to buy, b represents the outer market, which is traded at the selling price. It is generally considered to be active buying and bullish.
s is the abbreviation of Sell, that is, the meaning of sell, s represents the internal market, which is traded at the buying price, generally considered to be active selling, bearish.
Outer market means that the buyer of the stock buys the transaction at the selling price of the seller, and the transaction price is the asking price, indicating that the buying order is relatively active. When the transaction price is at the selling price, the transaction quantity is added to the cumulative quantity of the external market. When the cumulative quantity of the external market is much larger than the cumulative quantity of the internal market, it means that many people are rushing to buy the stock, and the stock price has a rising trend. The outer order is a transaction that is traded at the seller’s selling price, and the sales volume statistics are added to the outer order. Usually in the domestic stock software , the red number indicates the outer market.
Inner market means that the stock is traded at the bid price, and the transaction price is the bid price, indicating that selling is more active. The transaction price is called the inner order at the bid price. When the transaction price is at the buying price, add the current quantity to the accumulated quantity in the internal market. When the accumulated quantity in the internal trading is much larger than the accumulated quantity in the external trading, and the stock price falls, it means that many people are selling the stock strongly.