A volatile world is sending stock markets tumbling but don't panic

You may feel like pulling your money out but most of the market's 10 best days over the last 20 years have occurred within two weeks of the 10 worst days The Dow Jones Industrial Average is off to its weakest ever start to the year. In the first four trading days of 2016, the blue-chip index fell by more than 5%. If you want to know how long "ever" is, that would be since 1897 - or as long as records have been kept.