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Wei Dai (Chinese: 戴维) is a computer engineer known for contributions to cryptography and cryptocurrencies. He developed the Crypto++ cryptographic library, proposed the b-money cryptocurrency system, and co-proposed the VMAC message authentication algorithm.

The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Importantly, it is dictated by the external market and not by management. The WACC represents the minimum return that a company must earn on an existing asset base to satisfy

WePay is an online payment service provider based in the United States. It provides an integrated and customizable payment solution, through its APIs, to platform businesses such as crowdfunding sites, marketplaces and small business software companies. It also offers partners fraud and risk protection.

Wero is a European digital wallet and instant account-to-account payment service developed by the European Payments Initiative (EPI). It was launched in Germany on 2 July 2024, followed by France and Belgium later that year. Wero is currently available in Belgium, France, Germany, Luxembourg, and the Netherlands. Leading Austrian banks are planning to introduce the service.

The Western Union Company is an American multinational financial services corporation headquartered in Denver, Colorado.

WhopperCoin was a cryptocurrency launched by the Russian branch of Burger King as a loyalty program in the summer of 2017. It was primarily notable for being the first issuance of branded cryptocurrency by a major company and the first form of loyalty points that could be traded freely; the BBC noted that Burger King was the "first major corporate brand to issue its own crypto-cash", wit

Willem "Wim" Drees Jr. (24 December 1922 – 5 September 1998) was a Dutch politician of the Democratic Socialists '70 (DS'70) party and economist.

In 1896, William Jennings Bryan ran unsuccessfully for president of the United States. Bryan, a former Democratic congressman from Nebraska, gained his party's presidential nomination in July of that year after electrifying the Democratic National Convention with his Cross of Gold speech. He was defeated in the general election by the Republican candidate, former Ohio governor William

In 1896, William McKinley was elected President of the United States. McKinley, a Republican and former Governor of Ohio, defeated the joint Democratic and Populist nominee, William Jennings Bryan, as well as minor-party candidates. McKinley's decisive victory in what is sometimes seen as a realigning election ended a period of close presidential contests, and ushered in an era of domina

Willow Wealth Inc. (formerly Yieldstreet) is an American financial technology company headquartered in New York City that operates an online platform for alternative investments. The platform enables accredited investors and retail investors to access private market asset classes including real estate, private credit, private equity, art, and legal finance. As of 2025, the platform repor

Willem Frederik "Wim" Duisenberg (Dutch: [ˈʋɪləɱ ˈfreːdərɪk ʋɪm ˈdœysə(m)bɛr(ə)x] ; 9 July 1935 – 31 July 2005) was a Dutch politician, economist and senior official who served as the first President of the European Central Bank from 1998 to 2003. A member of the Labour Party (PvdA), he previously was Minister of Finance from 1973 to 1977 and presided over De Nederlandsche Bank (DNB), th

WinCapita, previously WinClub and GiiClub, was a Finnish Internet-based Ponzi scheme that advertised itself as a private investment club engaged in currency trading. In reality, it was a bucket shop like many other foreign exchange fraud schemes. It operated mainly in Finland, with a smaller number of members also in Sweden. The operation collected about 100 million euros from more than

Wincor Nixdorf was a German corporation that provided retail and retail banking hardware, software, and services. Wincor Nixdorf was engaged primarily in the sale, manufacture, installation and service of self-service transaction systems (such as ATMs), retail banking equipment, lottery terminals, postal terminals, software and services for global financial and commercial markets.

Wire transfer, bank transfer, or credit transfer, is a method of electronic funds transfer from one person or entity to another. A wire transfer can be made from one bank account to another bank account, or through a transfer of cash at a cash office.

Wirecard AG is an insolvent German payment processor and financial services provider whose former CEO, COO, two board members, and other executives have been arrested or otherwise implicated in criminal proceedings. The company offered electronic payment transaction services and risk management, and issued and processed physical and virtual cards. As of 2017, the company was listed on th

Wizzit is a provider of basic banking services for the unbanked and underbanked (people or enterprises that have no or only limited access to banking services) in South Africa. Its services are based on the use of mobile phones for accessing bank accounts and conducting transactions, in addition to a Maestro debit card that is issued to all customers upon registration. Wizzit is a branch

Wolfgang Stützel (23 January 1925, in Aalen, Germany – 1 March 1987, in Saarbrücken, West Germany) was a German economist and professor of economics at the Saarland University, Germany. From 1966 to 1968 he was member of the German Council of Economic Experts (German: Sachverständigenrat zur Begutachtung der gesamtwirtschaftlichen Entwicklung).

The Wolfsberg Group is an association of 12 global banks which aims to develop frameworks and guidance for the management of financial crime risks.

WooCommerce is an open-source e-commerce plugin for WordPress. It is designed for online merchants of all sizes using WordPress. Launched on September 27, 2011, the plugin gained popularity for its simplicity to install and customize and for the market position of the base product as freeware (even though many of its optional extensions are paid and proprietary). WooCommerce is developed

The President's Working Group on Financial Markets, known colloquially as the Plunge Protection Team, or "(PPT)" was created by Executive Order 12631, signed on March 18, 1988, by United States President Ronald Reagan.

The World Business Angels Association (WBAA) was an international, not-for-profit organization whose mission was to stimulate the exchange of knowledge and best practices in the field of global angel capital financing for high-growth and innovative startups. It was closed around 2017.

A world currency, supranational currency, or global currency is a currency that is widely used in international finance or in international trade to price goods or other transactions. It is generally a currency which is stable in terms of inflation and has a high demand on the foreign exchange market. Greek and Roman coins were the first world currency, followed by Dutch guilders in the

World Liberty Financial (WLFI) is a decentralized finance protocol developed by its namesake company. It was founded in 2024 by Zachary Folkman, Chase Herro, Alex Witkoff, Zach Witkoff, and Trump family members. It is a business venture of the Trump family. The Trump family receives 75% of net proceeds when WLFI sells tokens, as well as gets a cut of stablecoin profits. By December 2025,

The World Pensions Forum, also called World Pensions & Investments Forum, is a research and policy oriented conference organised by M. Nicolas Firzli, founder of the World Pensions Council (WPC), in partnership with regional and supranational organisations, large public and private institutional investors from G10 countries, the emerging nations of Eastern Europe, Latin America, Asia and

The World Trade Organization (WTO) is an intergovernmental organization that regulates and facilitates international trade. Established on 1 January 1995, pursuant to the 1994 Marrakesh Agreement, it succeeded the General Agreement on Tariffs and Trade (GATT), which was created in 1948. As the world's largest international economic organization, the WTO has 166 members, representing over

Worldline SA is a French payment processing company founded in 1972. In 2024 its revenue was €4.63 billion.

Worldpay is an American multinational financial technology company and payment processing company. It provides payment and technology services to merchants and financial institutions globally generating 40 billion transactions across 146 countries and 135 currencies.

XBRL (Extensible Business Reporting Language) is a freely available global framework for exchanging business information. XBRL allows the expression of semantics commonly required in business reporting. The standard was originally based on XML, but now supports reports in JSON and CSV formats in addition to the original XML-based syntax. XBRL is also increasingly used in its Inline XBR

Xe.com (Xe) is a Canada-based online foreign exchange tools and services company headquartered in Newmarket, Ontario. It is best known for its online currency converter application that offers exchange rate information, international money transfers, and other currency-related services via its website, mobile apps, and other online channels. It has been a subsidiary of Euronet Worldwid

Xoom (previously known as Xoom Corporation) is a digital money transfer service owned by PayPal that enables users to send money internationally to recipients in 160 countries. The service allows individuals in the United States, Canada, the United Kingdom, and select European countries to transfer funds through bank deposit, mobile wallet, and cash pickup options. Xoom also offers inter

Xsolla is an American financial technology company that makes payment software for video games. It was founded in 2005 in Perm, Russia, by Aleksandr Agapitov. As of 2022, it had 500 employees. The company's core product is Pay Station, a suite of tools for integrating payment systems. It can be used to accept more than 1000+ payment types in more than 200 countries. Xsolla software was u

In mathematical finance, X-Value Adjustment (XVA, xVA) is an umbrella term referring to a number of different "valuation adjustments" that banks must make when assessing the value of derivative contracts that they have entered into. The purpose of these is twofold: primarily to hedge for possible losses due to other parties' failures to pay amounts due on the derivative contracts; but al

Yang Cheng Tong (Chinese: 羊城通; Jyutping: joeng4 sing4 tung1; pinyin: Yáng chéng tōng; lit. 'Ram City Pass') is a contactless rechargeable stored value smartcard designed for paying the travel fares in the metro, buses, taxis and ferries in Guangzhou, China, along with most other cities in Guangdong, with the exception of Shenzhen. It was developed and managed by Guangzhou Yang Cheng Tong

Yape (pronounced [ˈʝape]) is a digital wallet and mobile payment application developed by the Banco de Crédito del Perú (BCP) in 2016. As of 2025, it has over 20 million users. Its features include instant, commission-free peer-to-peer transfers, bill payments, and purchases using a smartphone via a phone number or QR code, without requiring a traditional bank account, enabling its use b

A year-on-year inflation-indexed swap (YYIIS) is a standard derivative product over inflation rate. The underlying is a single consumer price index (CPI). The first swap of this kind was traded through the inter-dealer broker network in November 1999.

The Yeltsin–Gaidar government reforms (Russian: Реформы правительства Ельцина — Гайдара), known also as the Gaidar reforms are the changes in the economy of Russia and public administration system carried out by the Cabinet of Boris Yeltsin and Yegor Gaidar from January 2 to December 15, 1992.

Yeouido (Korean: 여의도; lit. 'Yeoui Island'), also Yoido, is a river island on the Han River in Seoul, South Korea. It is Seoul's main finance, media, and investment banking district. It is 8.4 square kilometres (3.2 mi2) large and has a population of 32,674 as of August 2023.

In finance, the yield on a security is a measure of the ex-ante return to a holder of the security. It is one component of return on an investment, the other component being the change in the market price of the security. It is a measure applied to fixed income securities, common stocks, preferred stocks, convertible stocks and bonds, annuities and real estate investments.

A yield curve shows the relationship between yields and time to maturity for a set of comparable debt securities. In practice the term usually refers to curves built from a single issuer or market segment so that credit quality and other features are as similar as possible, for example the U.S. Treasury curve for government bonds.

The yield to maturity (YTM), book yield or redemption yield of a fixed-interest security is an estimate of the total rate of return anticipated to be earned by an investor who buys it at a given market price, holds it to maturity, and receives all interest payments and the capital redemption on schedule.

YooKassa branded as ЮKassa (Previously Yandex.Checkout) (Russian: Яндекс.Касса), is a Russian E-commerce payment system operated by YooMoney, owned by Sberbank. It was launched in 2013.

YooMoney branded as ЮMoney, (formerly Yandex.Money) is an e-commerce payment system. It is 100% owned by Sberbank and operates in Russia and nearby countries.

York Capital Management (York Capital) is an American investment management company, founded by James Dinan and headquartered in New York City.

Yozma, Yozma Program, or Yozma Fund was a venture capital organization in Israel that initially started out as a government funded program in 1993 to help kick start venture capital, angel investing, and private equity in Israel's economy. $20 million of government subsidies went to the Yozma Fund, the other $80 million the government provided went to match other foreign and domestic fir

The Z-spread, ZSPRD, zero-volatility spread, or yield curve spread of a bond is the parallel shift or spread over the zero-coupon Treasury yield curve required for discounting a predetermined cash flow schedule to arrive at its present market price. The Z-spread is also widely used in the credit default swap (CDS) market as a measure of credit spread that is relatively insensitive to the

In finance, a zero coupon swap (ZCS) is an interest rate derivative (IRD). In particular it is a linear IRD, that in its specification is very similar to the much more widely traded interest rate swap (IRS).

Zero interest-rate policy (ZIRP) is a macroeconomic concept describing conditions with a very low nominal interest rate, such as those in contemporary Japan and in the United States from December 2008 through December 2015 and again from March 2020 until March 2022 amid the COVID-19 pandemic. ZIRP is considered to be an unconventional monetary policy instrument and can be associated with

The zero lower bound (ZLB) or zero nominal lower bound (ZNLB) is a macroeconomic problem that occurs when the short-term nominal interest rate is at or near zero, causing a liquidity trap and limiting the central bank's capacity for inflation targeting.

Zero-based budgeting (ZBB) is a budgeting method that requires all expenses to be justified and approved in each new budget period. It was developed by Peter Pyhrr in the 1970s. This budgeting method analyzes an organization's needs and costs by starting from a "zero base" (meaning no funding allocation) at the beginning of every period. The intended outcome is to assess the efficient us

A zero-coupon inflation swap (ZCIS), also called a zero-coupon inflation-indexed swap (ZCIIS), is a standard derivative product whose payoff depends on the inflation rate realized over a given period of time. The underlying asset is a single consumer price index (CPI).

Zettle by PayPal (previously known as iZettle) is a Swedish financial technology company founded by Jacob de Geer and Magnus Nilsson in April 2010. Launching its first app and service in 2011, the company offers a range of financial products including payments, point of sales, funding and partners applications. The company was acquired by PayPal in 2018.

A zombie bank is a financial institution that has an economic net worth of less than zero but continues to operate because its ability to repay its debts is shored up by implicit or explicit government credit support.

Zong was a mobile payment company that allowed users to make micropayments on the Internet if they have a postpaid mobile phone. The payments were charged to their mobile phone bills by the mobile operator. The company was acquired by eBay in 2011 and disappeared in 2015.

ZuluTrade is a Greek financial technology company that operates an online and mobile social and copy trading platform. The platform allows users to automatically copy the trades of other investors in the foreign exchange market. As of 2014 ZuluTrade had around one million users and an executed trading volume of over $800 billion.