If there is good liquidity of SiMSCI Futures to start with,a virtuous circle can set in to draw in more hedgers and speculators,leading to even lower transaction costs and higher liquidity.

• 某君在这一刻对全盘股市看跌（涨），他可以立刻卖出（买进）指数期货。如果他在五分钟后改变了想法，他可以立刻买进（卖出）、把盘口给盖了，除了价差，只是损失了一点交易费用。