The activities of financial markets are often irrational. Prices go up for no apparent reason and then suddenly the mood changes. What's worrying about the latest spasm that has convulsed bourses in Europe, Asia and North America is that the sell-off is grounded in real and ever-more pressing concerns. Make no mistake, something serious is going on here.
That something can be divided into three parts. The first cause for anxiety is the global economy, and in particular the United States. The report released on Thursday by the Philadelphia Federal Reserve covers only a small part of the Eastern US but it has a good track record for charting the ups and downs of the world's biggest economy. The Philly Fed's barometer has just plunged deep into recession territory.
There are also simultaneous slowdowns going on in the rest of the world. Europe's economy has slowed to stall speed, the UK is still operating way below its pre-recession level and activity has come off the boil in China, even though to western eyes growth still looks amazingly strong in China.
Two and a half years ago, financial markets rallied strongly on the assumption that the worst of the slump was over. There was relief that Great Depression 2 had been avoided. Now the talk is over a double-dip recession.
http://www.guardian.co.uk/business/2011/aug/19/global-markets-take-fright-banks