The acronym STAMP refers to the Securities Transfer Agents Medallion Program. This program guarantees bonds designed to protect an investor, an issuer of securities, or transfer agent against fraud. Transfer agents are liable for securities registration, the bond is used by all signature guarantors. A related bond is a SEMP bond, or a Stock Exchange Medallion Program bond. A STAMP bond is used by all signature guarantors. A SEMP bond is used by members of a particular stock exchange.