Are there any brokers who can speculate in stocks, futures and foreign exchange?
Yes, find a large brokerage firm. Generally, large brokerage firms have futures companies holding shares, such as CITIC Securities and Hongyuan Securities. When opening an account, you can open a stock account and a futures account at the same time, which can achieve the purpose of speculating both stocks and futures. However, investors are advised not to participate in futures investment, which is risky.