As a form of corporate ownership the mutual has fallen out of favor in the U.S. since the 1980s. Savings and loan industry deregulation and the late 1980s savings and loan crisis led many to change to stock ownership, or in some cases into banks. Many large U.S.-based insurance companies, such as the Prudential Insurance Company of America and the Metropolitan Life Insurance Company have "demutualized", with shares of stock being distributed to their policyholders to represent the ownership interest they formerly had in the form of their interest as mutual policyholders.