September has arrived. For market participants it is not only the time to return to their offices after summer vacation, but also the time to experience a great deal of anxiety. Many investors know perfectly well that September is the worst month for financial markets in terms of performance (see Picture 1 below). Some investors are familiar with the expression, “Sell in May and Go Away”. Most investors have also heard of the Christmas rally in November and December too. Still, there is no unambiguous rational explanation for all these recurring calendar anomalies. Perhaps people are reducing their exposure to…...
September Blues: The Role of Statistics and Psychology in Financial Markets
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