The fuse mechanism originated in the United States, and the Chicago Mercantile Exchange of the United States imposed a 3% price limit on the daily trading price of the S&P 500 index futures contract 1982. However, this provision was abolished in 1983, and it was not until 1987 that people reconsidered the implementation of the price limit system.
2065438+On September 7th, 2005, Shanghai Stock Exchange, Shenzhen Stock Exchange and China Financial Futures Exchange issued a consultation notice, intending to introduce the index fuse mechanism on the premise of retaining the existing stock price fluctuation system. On February 4th, 20 15, 15, under the unification of relevant departments, the CSRC officially issued relevant regulations on index fuse, which took effect on June 4th, 20 16, 1 year.
Extended data
Previous blows to A shares:
2016 65438+1October 4th, A shares were "blown" for the first time in history. In early trading, the two markets both opened lower, and then the Shanghai Composite Index plummeted, falling below 3,500 points and 3,400 points, and all major sectors fell in succession.
In the afternoon, the Shanghai and Shenzhen 300 index continued to fall after the opening, and 13 broke through 5%, causing a fuse. Three exchanges were suspended 15 minutes. After the resumption of trading, the Shanghai and Shenzhen 300 Index continued to fall, hitting the 7% mark at 13: 34, and the three exchanges were suspended to close.
20 16 17, at 9: 42 am, the Shanghai and Shenzhen 300 Index fell to 5%, triggering a fuse again, and the two markets will resume trading at 9: 57. Only 3 minutes after the opening, the Shanghai and Shenzhen 300 Index quickly bottomed out again, with the largest drop of 7.2 1%, and the second fuse hit the threshold. This is the second early closing since 20 16, and it has also set the fastest closing record.
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