Just how much have world stocks suffered in the past year or so? Try this. According to the World Federation of Exchanges, the market capitalisation of global stock markets has halved. It was $63 trillion in October 2007. At the end of January this year it was only $31 trillion.

 

It has all been more furious than most people can recall as well. When the internet-stock bubble burst at the beginning of this decade, MSCI’s all-country world stock index lost around 51 percent of its value from peak to trough. In the latest drop, the index fell 58 percent from an all-time high in November 2007 to a new cycle low yesterday.

 

And it has been fast. The internet-stock bubble decline took slightly more than 30 months. The current fall has taken only 16 months.