Investment banking is a type of banking that organizes large, complex financial transactions such as mergers or initial public offering (IPO) underwriting. These banks may raise money for companies in a variety of ways, including underwriting the issuance of new securities for a corporation, municipality, or other institution.

Investment banking is a type of financial service that helps companies and other entities raise capital by underwriting and issuing securities. Investment banks also provide advice on mergers and acquisitions, and help clients buy and sell securities. Investment banks are typically divided into two main areas: the front office and the back office.

Investment banking is a sector of the industry that deals mainly with capital financing for a range of customers in global and local businesses. In particular, investment banking helps companies bring shares to the public, underwrites bond offerings, and engages in proprietary trading and investment.

An investment bank can be a stand-alone entity or a division within a larger bank or financial institution. A small, or boutique, investment bank typically offers two areas of service: mergers and acquisitions, and advisory and underwriting. A full-service investment bank offers sales and trading, equity research, and asset management in addition.

Investment bankers are investment professionals who combine financial services industry expertise, analytical prowess, and effective persuasive communication skills to support institutional clients in activities like capital raising and mergers and acquisitions.