What is the ruling on working in the marketing research department of a Kuwaiti company that trades stocks and currencies in America?

Working in the field of stock and currency trading, whether directly or through marketing research, advertising, and publicity, involves legal caveats depending on the type of shares and the method of currency exchange. If the shares are foreign, some are prohibited, such as shares of banks, alcoholic beverage companies, and insurance companies. Similarly, currency exchange on the stock market and online does not meet the Sharia (definition) conditions of simultaneous exchange (al-taqabud) and equality (al-tumathul). Therefore, marketing such transactions is prohibited because it falls under the general category of aiding in sin, as Allah states: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression." However, if the work involves permissible transactions that do not aid in what is forbidden, then there is no objection.