The S&P 500 has fallen 10% from its January peak while stocks in Hong Kong and Tokyo are also down sharply this week. The FT's Jasper Moiseiwitsch explains why.

► Subscribe to FT.com here:http://bit.ly/2GakujT

► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs

For more video content from the Financial Times, visit http://www.FT.com/video


Twitter https://twitter.com/ftvideo
Facebook https://www.facebook.com/financialtimes