october effect การใช้

The fact that Twain specifically picks out October initially is taken as a reference to an " October effect ", as exemplified by the 1929, 1987 and 2008 stock market crashes which roughly occurred in October.
As with the more celebrated " October effect " in the U . S . stock market, where some of the largest declines have come in that month, there is no single reason for why Latin American stock markets have underperformed toward the end of the year.