RWE is a discount certificate. It has a base at 26 and a cap at 29. If the share reaches at least 29 at the beginning of June, there will be a repayment of 3 euros. With my entry price of 1.71, this means a potential of around 80%. That is a top C/R ratio by my standards. At the moment, $RWE is at 30.44. This means that if you assume that RWE only stays above 29 for the next 3 months, you could still make a 40% return even now.