In the past, I made losses every now and then on individual shares. The largest loss was over 90%. Now I therefore work exclusively with country indices and go long or short. Mainly I use the ATH-sentiment as a basis, which means that the global information flow controls my decisions. This last year my portfolio show a return on over 70%. An abnormally high rate that shouldn´t be possible to achieve in the long run. Moreover the number of losses have been very small. Thus the advantage being an asymmetric relation of risk/reward to the rewards side