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Industry WIKI

Digital assets and currencies

Understand assets, networks and trading mechanics with sources you can check.

Payments & settlement

American Express

American Express Company (Amex) is an American bank holding company and multinational financial services corporation that specializes in payment cards. It is headquartered at 200 Vesey Street, also known as American Express Tower, in the Battery Park City neighborhood of Lower Manhattan; in 2026, the company announced that it would develop and be the sole occupant of the new 2 World Trad

Securities & exchanges

CME Group

CME Group Inc. (formerly Chicago Mercantile Exchange Holdings Inc.), headquartered in Chicago, Illinois, operates exchanges and provides clearing services for trading in financial derivatives such as futures contracts, options, and swaps. Its exchanges include the Chicago Mercantile Exchange (CME), the Chicago Board of Trade (CBOT), the New York Mercantile Exchange (NYMEX), and the Commo

Payments & settlement

Gift card

A gift card, also known as a gift certificate in North America, or gift voucher or gift token in the UK, is a prepaid stored-value money card, usually issued by a retailer or bank, to be used as an alternative to cash for purchases within a particular store or related businesses. Gift cards are also given out by employers or organizations as rewards or gifts. They may also be distributed

Payments & settlement

Google Pay Send

Google Pay Send, previously known as Google Wallet, was a peer-to-peer payments service developed by Google before its merger into Google Pay. It allowed people to send and receive money from a mobile device or desktop computer.

Finance

List of public corporations by market capitalization

The following is a list of publicly traded companies, that have the largest market capitalization or "market value". Most or all of these companies would be categorized as megacap stocks.

Payments & settlement

Mondex

Mondex was a smart card electronic cash system, implemented as a stored-value card and owned by Mastercard.

Payments & settlement

PayPal

PayPal Holdings, Inc. is an American multinational financial technology company operating an online payments system in the majority of countries that support online money transfers; it serves as an electronic alternative to traditional paper methods such as checks and money orders. The company operates as a payment processor for online vendors, auction sites and many other commercial and

Securities & exchanges

Tracking stock

Tracking stock (also known as letter stock and targeted stock) is a specialized equity offering issued by a company that is based on the operations of a defined business within the larger organization (such as, for instance, a wholly owned subsidiary of a diversified firm). Therefore, the tracking stock will be traded at a price related to the operations of the specific division of the c