Private investors are individuals or groups who invest their own money into businesses or projects, often seeking a return on their investment. They can provide funding for startups, small businesses, or real estate ventures, and may also offer expertise and guidance to help the business grow. These investors typically operate outside of public markets and do not have the same regulatory requirements as institutional investors. They may invest through various means, such as angel investing, venture capital, or private equity, and their involvement can be crucial for entrepreneurs looking to launch or expand their ventures.