Överavkastning och Black Swans
Unlike other research on Black Swans, beta and returns, we have in this study chosen to identify Black Swans with three different definitions. When index fluctuates with more than 2.75, 3.0 or 3.25 standard deviations from mean, a Black Swan occur. Despite different definitions on Black Swans, we have been able to generate excess return for a stock portfolio on the Swedish stock exchange (OMXS30–i