“…To control for the potential effects of marketing campaigns designed to promote certain products, we include the certificate's trading volume (CertTradeVolEuwax) on the respective trading day on the Euwax (number of certificates traded), adjusted by the number of that certificate the investor himself traded on the Euwax on that day. Baule and Blonski (2014) find that individual investors have a strong preference for 'round' strike prices, i.e., they prefer a discount certificate with a strike price of EUR 20 over an otherwise identical certificate with a strike price of EUR 20.50, for example. Therefore, we include the dummy variables RoundStrike 1 , RoundStrike 5 , and RoundStrike 10 which are 1 if the certificate's strike is divisible by EUR 1, 5, and 10, respectively, and 0 otherwise.…”