People often say that exchanges insert pins and fixed-point explosions on contracts. In fact, those who say this do not understand contracts at all, let alone the matching mechanism of exchanges.

Insertion and fixed-point explosions may occur on unpopular coins in some small or large exchanges, but even on mainstream coin contracts of second-tier exchanges, this situation will never occur.

The so-called insertion is that the price suddenly drops sharply and then quickly recovers, or rises sharply and then falls back. This phenomenon exists in the trading of any financial derivatives. Some people have their positions blown up because of such large fluctuations. What is even more unacceptable to the blown-up person is that the price recovers after the position is blown up. It is understandable that the blown-up person feels that he is being targeted, but if your long position is blown up by a sharp drop, then the short position of this sharp drop will not make a lot of money, and the long orders placed under this deep drop will all be traded, so this needle will not make a lot of money?

Those who do not understand contracts think that the position is blown up by the exchange. For the matching trading system, your position is blown up by the opponent, and it has nothing to do with the exchange. Of course, the exchange will have its own position. As for the OTC knock-out contract, although MT4 is a dealer system, the big MT4 platforms will not suffer much loss from customers, because the big platforms have many customers, and at the same time, the number of longs and shorts is almost equal. I saw it clearly in the "trading room" of Shifu in Hong Kong.