Underwriter
Underwriter is an individual especially trained in evaluating risks and determining rates and coverages for them.
Underwriter is also an insurer.
Underwriter is also a financial organization that handles sales of new securities which a company or municipality wishes to sell in order to raise money. Typically the underwriters will guarantee subscription to securities say, an issue of equity from the company at a stated price, and are under an obligation to purchase securities upto the amount they have underwritten, should the public not subscribe for the issue.