UCC insurance provides collateral protection for lenders and investors in loans secured by non-real estate assets such as ownership interests in companies. It insures the validity, enforceability, attachment, perfection, and priority of the lender's security interest, covering risks from fraud, forgery, documentation defects, and errors in UCC searches and filings. Originally developed for mezzanine loans, which are secured by ownership interests in real estate holding companies, UCC insurance has grown to insure over $450 billion in loans. It functions similarly to traditional real estate title insurance by shifting risks for lenders backed by personal property instead of real estate.