Fuse is a stock market term, which means that when the fluctuation of the stock index reaches the specified fuse point, the exchange takes measures to suspend trading to control the risk. Specifically, it is a mechanism to set a fuse price for the contract before the contract reaches the price limit, so that the contract trading quotation can only be traded within this price range for a period of time.

On March 9, 2020, the new york stock market plunged at the opening, and then the decline reached the upper limit of 7%, triggering the fuse mechanism. After the resumption of trading, the decline once narrowed. At the close, the three major stock indexes of new york stock market all fell more than 7%. On March 12, the three major US stock indexes plunged immediately after opening. The Dow Jones index plunged more than 65,438+0,400 points, and the S&P 500 index fell more than 6%.

Fuse requirements:

1. Within ten consecutive minutes after the fuse mechanism is started, the declared contract price shall not exceed the fuse price, and the transaction shall continue. Ten minutes later, the limit of fuse fluctuation is cancelled, and the limit of 10% takes effect.

2, when there is a fuse price declaration, enter the inspection period. The inspection time is one minute. During the inspection, the declared price is not allowed to exceed the fuse price, and the declaration exceeding the fuse price will be prompted.

3. If the fuse inspection period is not completed and enters the non-trading state, the fuse inspection period will automatically end, and when it enters the tradable state again, the fuse inspection period will be recalculated.