An Unlisted Security is a financial instrument, such as a stock, bond, or derivative, that is not traded on a public stock exchange. Unlisted securities are not subject to the same level of regulation and public scrutiny as listed securities, and they are typically traded over-the-counter (OTC) or through private placement.Investing in unlisted securities carries a higher degree of risk than investing in listed securities because they are not subject to the same level of transparency and regulatory oversight. The absence of a public market also makes it more difficult to buy or sell unlisted securities, which can affect their liquidity.Unlisted securities are often used by smaller companies that are not yet ready to go public or by established companies that are looking to raise capital through private placement. They can also be used by wealthy individuals and institutional investors who are looking to invest in alternative or private assets.In conclusion, an unlisted security is a financial instrument that is not traded on a public stock exchange and is typically traded through private placement or over-the-counter. Unlisted securities carry a higher degree of risk than listed securities and are often used by smaller companies, established companies, wealthy individuals, and institutional investors who are looking to invest in alternative or private assets.