"Construct a portfolio that is sure to outperform market averagesWarren Buffett had it right all along. Now it's your turn to learn how to construct a portfolio that is sure to outperform the market averages, as well as almost every professional money manager in the world. Warren Buffett's...

We examine the daily activity and performance of a large panel of individual investors in Sweden's Premium Pension System. We find that active investors earn higher returns and risk-adjusted returns than inactive investors. A performance decomposition analysis reveals that most of the...