Listed

Listed is the past participle of the verb list and an adjective used to describe something that has been placed on a list, catalog, or register. In everyday language, items, names, or entities are said to be listed when they are recorded in a documented collection, such as inventories, bibliographies, directories, or databases. The term can apply across disciplines, from library science to project management, where items are organized for reference, tracking, or compliance.

In finance and markets, listing refers to the official authorization for a security or company to trade on a regulated exchange. A listed security can be bought and sold on the exchange, and listing requirements typically include eligibility criteria, disclosure obligations, and ongoing reporting. A company may be delisted if it fails to meet exchange rules, reducing liquidity and changing access to capital.

In heritage and conservation, listed status identifies buildings, sites, or artifacts that are legally protected due to historic, architectural, or cultural importance. In England, for example, listed buildings are categorized as Grade I, Grade II*, or Grade II, with restrictions on alterations to preserve their character. Similar frameworks exist in other countries to guide preservation and regulatory oversight.

Other regulatory or administrative contexts use listing to indicate inclusion on official lists of commodities, medications, endangered species, suppliers, or tender opportunities. Being listed can affect eligibility, permissions, pricing, and governance, whereas removal from a list—delisting or delisting—remedies or changes status in response to new information or compliance failures.