Yes, a 15-year-old can invest in the stock market, but they will need to do so through a custodial account, which means that an adult will control the investments on their behalf until they reach the age of majority, which is either 18 or 21 depending on the state. Investing at a young age can be beneficial due to the power of compound interest, which means that the earlier one starts investing, the more time their money has to grow. However, it is important for teenagers to keep in mind that investing involves risks and it is important to do thorough research and have a long-term investment strategy. It is also recommended for teenagers to start small and only invest money that they can afford to lose.

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