The Profitability indicator indicates how the margin of the bookmaker is with expecting probability of the different exits. Computation of the indicator by the example of football: (1/Quote victorious home team) + (1/Quote draw) + (1/Quote victorious away team). Thus the ratios of a sport bet offered are with the play Hanover 96 - 1. FC Nuremberg, 1.7,3.5,4.8, then computes itself the indicator as follows: (1/1,7)+(1/3,5)+(1/4,8) = 108.2% or 1,082. The bookmaker expects here thus on a long-term basis a margin of 8,2%. The lower the indicator, the more highly the risk of the bookmaker, since its margin is small with an expected exit.