It's a European and American movie, about a female futures trader with an ordinary job. One day, she met a black woman. The woman claimed to know the fluctuation of futures and wanted to ask her to control the futures market. She began to agree. As a result, her company dismissed her because she found that someone had given her cash benefits, but another company recruited her soon. Relying on the information of the black woman, she did very well in the futures industry and found a new boyfriend. But then she quit and broke up with that magical black woman. It seems to be an episode. Please help a friend who knows the name of this film to provide the title, thank you!

Question added: It seems to be a movie in the 1990s. Why is this movie not bad? I also want to know that I can't remember the year. It was shown on TV once.