Jefferies Financial Group Inc. operates as an investment banking and capital markets firm in the Americas, Europe, the Middle East, and the Asia-Pacific. The company operates in two segments, Investment Banking and Capital Markets, and Asset Management. It provides investment banking, advisory services with respect to mergers or acquisitions, debt financing, restructurings or recapitalizations, and private capital advisory transactions; underwriting and placement services related to corporate debt, municipal debts, mortgage-backed and asset-backed securities, equity and equity-linked securities, and loan syndication services; and corporate lending services.