The rise in volume and price mainly refers to the phenomenon that when the trading volume increases, the stock price of individual stocks (or the market) falls instead. Most of the phenomena of falling volume and price appear in the early stage of falling market, and a small part appears in the early stage of rising market.

At the beginning of the decline, after a period of surge, there were more and more chips to make money in the market, and investors threw out their stocks one after another, which led to the stock price falling. This phenomenon of high price, high price increase and low price is the signal of selling.

The initial spot forward transaction is a verbal commitment by both parties to deliver a certain amount of goods at a certain time. Later, with the expansion of the scope of transactions, oral promises were gradually replaced by sales contracts. This kind of contract behavior is becoming more and more complicated, and it needs intermediary guarantee to supervise the timely delivery and payment of goods. So the Royal Exchange, the world's first commodity forward contract exchange, opened in London on 157 1.

Expand the standardized contract made by the information futures exchange, and stipulate to deliver a certain quantity and quality of the subject matter at a specific time and place in the future.

Futures commission: equivalent to the commission in the stock. For stocks, the expenses of stock trading include stamp duty, commission and transfer fees. Relatively speaking, the cost of engaging in futures trading is only the handling fee. Futures commission refers to the fees paid by futures traders according to a certain proportion of the total contract value after the transaction.

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