Stock index futures can buy stocks (especially the index components of stock index futures) at the same time after buying stock index futures, so as to achieve the purpose of pushing up the index and realize the "win-win" between stock index futures and stock positions; The same is true for short sides. In order to make a profit in stock index futures, we can suppress the stock index in the spot market by buying a large number of heavyweights to make a profit in the futures market. However, it is generally necessary to cooperate with margin financing and securities lending, that is, to borrow stocks in the securities lending market, sell them at a low price in the spot market and push down the index, then buy back the stocks at a low level and return them later, so as to avoid the actual losses caused by excessive short-selling losses on stocks and too little profit on the futures index.
Therefore, in theory, stock index futures can be bearish or bullish. If it does not cooperate with the introduction of margin financing and securities lending system or covered warrants, it will be conducive to shorting.
Whether short or long, banks, as heavyweights, are sharp tools for institutions to prepare stock index futures. Before the introduction of stock index futures, it should be strongly optimistic.
China Construction Bank, the cost price is 7 yuan, 8 yuan. In the short term, we can consider 9- 10 yuan as the band. Hold fast to the medium and long lines.