U

Underwriter - Makes the determination of who can be insured and at what rate.

Uninsurable - An individual who is unable to obtain life insurance coverage due to the high risk he or she represents to the insurance company. For example, most insurance companies would consider an individual with a serious life threatening disease to be uninsurable.

Unit Investment Trust (UIT) - An SEC-registered investment company which purchases a fixed portfolio of securities and then sells a fixed number of shares in the trust to investors.

U.S. Treasury Bills - U.S. government securities that mature (are redeemed) sooner than one year after issue. They are sold at weekly auctions at a discount and are redeemed at face value.