This paper reports a wandering weekday effect: the pattern of day seasonality in stock market returns is not fixed, as assumed in the Monday or weekend effects, but changes over time. Analysing daily closing prices in eleven major stock markets during 1993–2007, our results show that the...

This paper is the first to present explicit empirical evidence that market inefficiency is multi-dimensional. Testing the Efficient Market Hypothesis (EMH) over 76 stock indices using 17 well accepted indicators (e.g. runs test), results show that most indices exhibit some type(s) of...