The full name of stock index futures (SPIF) is stock index futures, which can also be called stock index futures and futures index. It refers to the standardized futures contract with the stock price index as the subject matter. The two parties agree to buy and sell the underlying index according to the size of the stock price index determined in advance at a future date, and settle the difference in cash after the expiration. As a type of futures trading, stock index futures trading has basically the same characteristics and processes as ordinary commodity futures trading. Stock index futures are a kind of futures, which can be roughly divided into two categories, commodity futures and financial futures.
Negative stock market is a stock market term. Bad news refers to the information that can cause the stock price to fall, such as the deterioration of the operating performance of listed companies, bank tightening, bank interest rate increase, economic recession, inflation, natural disasters and man-made disasters. Bad news often leads to the overall decline of the stock market, and constant bad news will lead to the continuous decline of stock market prices, forming a "bear market." All kinds of factors and news (such as the deterioration of listed companies' operating performance, bank tightening, bank interest rate increase, economic recession, inflation, natural and man-made disasters, etc., which lead to stock price decline) are called bad news.