This theory, which essentially states that the price of a traded asset, such as a share, fully reflects its true value, has been discredited by the market turmoil of the last two years.

这个理论基本上是说，市场上如股票之类的交易资产的价格充分体现了它的真正价值。这一理论已由于过去两年的市场动荡而遭到质疑。