There are several legitimate investing platforms where you can invest your money and have the potential to earn a high return on investment (ROI). These platforms typically offer managed accounts, where experienced traders or investment professionals will manage your portfolio on your behalf, making trades and decisions based on their expertise and market analysis.

Here are a few examples of reputable platforms that offer managed accounts:

• eToro: eToro is a popular social trading platform that allows you to copy the trades of successful traders. They also offer a managed account service called CopyTrader, which connects you with a team of experienced traders who will manage your portfolio according to your risk tolerance and investment goals.
• Barclays Wealth: Barclays Wealth is a well-established wealth management firm that offers a range of investment solutions, including managed accounts. Their team of experienced portfolio managers will create a customized investment plan for you based on your individual circumstances and risk tolerance. 
• Charles Schwab: Charles Schwab is another large and respected financial services company that offers managed accounts. Their portfolio managers have access to a wide range of investment options, and they will work with you to develop a strategy that aligns with your financial goals.
• Vanguard: Vanguard is known for its low-cost index funds, but they also offer managed accounts for investors who want more hands-off approach. Their portfolio managers will construct a portfolio of index funds based on your risk tolerance and investment goals.
• Wealthfront: Wealthfront is a robo-advisor that uses algorithms to manage your portfolio. They offer a low-cost and diversified approach to investing, and they are known for their customer service.Wealthfront platform for investing

Here are some additional tips for choosing a managed account provider:

• Check the provider's credentials: Make sure the provider is registered with the appropriate regulatory bodies and has a good track record of performance.
• Compare fees: Managed account fees can vary significantly, so be sure to compare the fees charged by different providers.
• Meet with a representative: Schedule a meeting with a representative of the provider to discuss your investment goals and risk tolerance.
• Read the fine print: Before you invest, be sure to read the provider's terms and conditions carefully.

Conclusion: It is important to note that there is no guarantee of returns with any investment, and managed accounts can also carry risks. It is always a good idea to do your research and understand the fees and potential risks before start investing.