You are a paralegal working in the law office of Frank Davis Esq., who is representing a supermarket that is being sued by a customer who slipped and fell in the produce aisle. You tell your brother about his case, including the fact that the supermarket is about to be acquired by a large holding company. Unknown to you, your brother later bought shares in the stock of the holding company. It was not a good buy because the price of the stock has steadily declined since he bought it. What ethical problems, if any, might exist?