0%= net value/position margin; Position margin = 5,000 yuan/kg *15kg/hand *2 hands * 8% =12,000 yuan, which is substituted into the formula: 50%= net value/12,000 yuan, so the net value = 6,000 yuan, that is, when A's account net value is 6,000 yuan.

In the case of warehouse explosion and heavy warehouse operation caused by heavy warehouse operation, for example, the proportion of positions reaches more than 90%, the occupied funds are less, and the space for resisting reverse changes is small. Heavy warehouse operation is a way of small profits but quick turnover, because of the reverse change;

If the margin is insufficient, it will explode. This is a software system that automatically closes the stop loss. After the explosion, the account funds did not lose much, let alone were negative, but the value of the contract held was a lot of money.

At present, there are basically no explosions in the domestic expansion data, and there are restrictions on the rise and fall in China. When the margin is maintained below, the futures company will automatically close the position. In Hong Kong's Hang Seng Index futures, the Hang Seng Index is a four-hour trading system. The next day, there may be a big gap or gap, which will lead to the reversal of positions, and the position will explode as soon as it opens, or even be negative.

The negative number is the money owed to the futures company, because the futures brokerage company invests the money in the futures exchange in order to close the position of customers. Example 1: Example 4. Before the market opened in August 1 1, the customer failed to pay the additional margin to the futures company. In September, the stock index futures contract fell by 90 points, opened at 1060 and continued to fall.

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