Both futures and margin financing and securities lending adopt the margin system, and the margin can play a leverage role. For example, if the margin is 10%, you can buy and sell with 10% and get the price difference, which is equivalent to ten times the capital amplification.

Speaking of this problem, let's give an example to illustrate it. Now, for example, a ton of corn costs 2,300 yuan, and each lot is 10 tons, and the deposit is 8%. If you buy more lots, the deposit takes up 2,300 *10 * 8% =1840 yuan. If the market goes up, for example, to 2400, then you earn100 *10 =1000 yuan. Plus the deposit, the total is 2840 yuan.

If the market falls, for example, to 2200, you will lose 1 000 yuan. After deducting the deposit, your deposit is only 65,438+0, 840 yuan. If it drops by 180 points, your margin is only 40 yuan, and the exchange will inform you to add margin or force liquidation.

This example shows that the deposit is your own, yes, but it is not just a credit guarantee. The security deposit is a special fund, which can only be used for your own transactions, and others may not occupy or misappropriate it. You need to participate in the transaction to pay for the loss.