Underwriting contract
（重定向自Firm commitment underwriting）
In investment banking, an underwriting contract is a contract between an underwriter and an issuer of securities.
The following types of underwriting contracts are most common:
Stand-by underwriting, also known as strict underwriting or old-fashioned underwriting is a form of stock insurance: the issuer contracts the underwriter for the latter to purchase the shares the issuer failed to sell under stockholders' subscription and applications.