What is a Legal Entity Identifier (LEI)?
The Legal Entity Identifier (LEI) is a 20-character alphanumeric code that is based on the ISO 17442 standard developed by the International Organization for Standardization (ISO). It is created on the basis of reference information that provides the ability to clearly and uniquely identify legal entities involved in financial transactions. Each LEI contains information about the ownership structure of legal entities and thus answers the questions of "who is who" and "who owns whom".
Simply put, this public LEI database can be considered an international reference that significantly increases transparency in the global marketplace.