: For the third time in the last four months, the World Federation of Exchanges reported a significant gain in world stock market capitalization for the month of October, with a $2.5 trillion increase that pushed the total value of world stocks to $52.7 trillion (see chart). The October increase follows strong gains of $2.7 trillion in July and $3.8 trillion in September (and a slight decline of $0.50 trillion in August), for a cumulative four-month gain of $8.5 trillion from July-October, one of the largest four-month gains ever for world stock market value.