Pittsburgh-based PNC is a regional financial institution operating mostly on the East Coast. With 2,380 branches in 19 states and Washington, DC, the bank has nearly $397 billion in total assets. An acronym for two different banks, PNC stands for both Pittsburgh National Corporation and Providence National Corporation. When the two Pennsylvania banks merged to form the beginnings of the current company, they decided to use just the acronym because of the coincidence of their acronyms. PNC was an early adopter of “virtual wallet” services among traditional banks, and is known for its yearly index of the prices of items from the Christmas carol, “The Twelve Days of Christmas.”