Final answer:
Simon has invested in a Stock basket-linked PPN, which is tied to the performance of a group of stocks and has a cap on individual stock returns at 35%.
Step-by-step explanation:
Simon has purchased a Stock basket-linked PPN. This type of principal-protected note is linked to the performance of a basket of stocks, with the return determined by the effective average of the underlying shares. Furthermore, the limitation that the maximum return attributed to any one share is 35% indicates a performance cap on individual stock gains, which is a feature of stock basket-linked PPNs.