Therefore, the first thing to consider is whether to stop loss. Stop loss needs to refer to some conditions, not to close the position immediately when you see the loss. Because if its price rises after the stop loss, at this time we are equivalent to a real loss. Therefore, after shorting a futures, its price rises, so don't worry, and analyze the market outlook in time.

If it is judged that the price will rise, you can stop the loss decisively at this time. If it is judged that the price is only temporarily rising and the whole trend is still in the downward channel, then additional margin can be considered at this time. Because in the investment process, the position sheet loses money, and the margin may not be enough to support you to continue holding positions, so you must add margin according to the time required by the futures company, so that you can continue to open positions.