s and p 500 meaning in English

斯坦福五百种股票指数

Basic finance theory says that investors can get the best balance of risk and reward by owning pieces of as many of the world ' s asset classes as they can , from stocks to gold , alpacas to saffron . for years , the s and p 500 - stock index of the biggest u . s . companies was the best approximation of that ideal available to investors and they flocked to it . but in the past decade , the world ' s financial markets have changed in unexpected ways
对于这些大公司的蓝筹股一直势态低迷的情况，文章从历史分析入手，通过90年代后期蓝筹股的异常牛市来解释当期一蹶不振的原因：一方面是随着20世纪末市场化全球化的进程，经济发展的大爆发，蓝筹股指数达到一个过高的顶点，之后很难再超过另一方面是经济过热之后的适当紧缩，以及911等事件对美国经济的打击，蓝筹相对于小企业股票的应变性差的问题。