According to Wikipedia, Worldwide 'stock market' is estimated about US $ 51 trillions. Bond market is estimated around 45 trillions. The world derivatives market is estimated around US $ 480 trillions.
In terms of stock market share based on 2006 figures, North America captured about 41%, followed by Asia Pacific of 28%, Europe 27% and Latin America, Middle East and Africa 4%.
Worldwide mutual fund industry is estimated about 25 trillions.
Hedge fund industry has been growing very rapidly, it was estimated around US $ 1 trillion in 2005, probably even higher today.