The Securities and Exchange Commission (SEC) has criteria for those wanting to invest in higher risk securities.  These investors are referred to by the SEC as Accredited Investors, and are defined in Rule 501(a) of Regulation D.  For more information on these requirements, click here:  https://www.sec.gov/resources-small-businesses/capital-raising-building-blocks/early-stage-investors

The Definition of Accredited Investor is here (scroll to “Accredited Investor”)  https://www.sec.gov/resources-small-businesses/cutting-through-jargon-z#AI