What is the ruling on investing in a company that trades in oil, gold, and foreign currencies, and is subject to profit and loss?

For participation in any company to be permissible, it must be bound by the controls of Islamic Sharia. This means that its activity must be permissible, and it must not deposit a portion of its funds in usurious banks to earn interest. If the company adheres to these controls, then participation in it is permissible; otherwise, it is not.