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Digital assets and currencies

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

Finance

Social credit system

The social credit system (Chinese: 社会信用体系; pinyin: shèhuì xìnyòng tǐxì) is a national credit rating and blacklist implemented by the government of the People's Republic of China. The social credit system is a broad governance strategy to track businesses, individuals, and government institutions and enhance their perceived trustworthiness rather than a single system. It is based on varyi

Trading basics

Social media mining

Social media mining is the process of obtaining data from user-generated content on social media in order to extract actionable patterns, form conclusions about users, and act upon the information. Mining supports targeting advertising to users or academic research. The term is an analogy to the process of mining for minerals. Mining companies sift through raw ore to find the valuable mi

Finance

Stochastic differential equation

A stochastic differential equation (SDE) is a differential equation in which one or more of the terms is a stochastic process, resulting in a solution which is also a stochastic process. SDEs have many applications throughout pure mathematics and are used to model various behaviours of stochastic models such as prices of listed company shares, random growth models or physical systems tha

Finance

Stockbroker

A stockbroker is an individual or company that buys and sells stocks and other investments for a financial market participant in return for a commission, markup, or fee. In most countries they are regulated as a broker or broker-dealer and may need to hold a relevant license and may be a member of a stock exchange. They generally act as a financial adviser and investment manager. In thi

Trading basics

Stockholm congestion tax

The Stockholm congestion tax (Swedish: Trängselskatt i Stockholm), also referred to as the Stockholm congestion charge, is a congestion pricing system implemented as a tax levied on most vehicles entering and exiting central Stockholm, Sweden. The congestion tax was implemented on a permanent basis on 1 August 2007, after a seven-month trial period between 3 January 2006 and 31 July 200

Fiat currencies

Store of value

A store of value is any commodity or asset that would normally retain purchasing power into the future and is the function of the asset that can be saved, retrieved and exchanged at a later time, and be predictably useful when retrieved.

Trading basics

Swift v. Tyson

Swift v. Tyson, 41 U.S. (16 Pet.) 1 (1842), was a case brought in diversity in the Circuit Court for the Southern District of New York on a bill of exchange accepted in New York in which the Supreme Court of the United States determined that United States federal courts that heard cases brought under their diversity jurisdiction under the Judiciary Act of 1789 must apply statutory state

Trading basics

Swing producer

A swing producer or swing supplier is a supplier or a close oligopolistic group of suppliers of any commodity, controlling its global deposits and possessing large spare production capacity. A swing producer is able to increase or decrease commodity supply at minimal additional internal cost, and thus able to influence prices and balance the markets, providing downside protection in the

Trading basics

Tax expenditure

Tax expenditures are government revenue losses from tax exclusions, exemptions, deductions, credits, deferrals, and preferential tax rates. They are a counterpart to direct expenditures, in that they both are forms of government spending.

Finance

Tax haven

A tax haven is a term, often used pejoratively, to describe a place with very low tax rates for non-domiciled investors, even if the official rates may be higher.

Finance

Tax-Sharing Reform of China in 1994

The Chinese government initiated a fiscal and taxation system reform in 1992, prepared and promulgated in 1993, and finally implemented in 1994. The reform was a large-scale adjustment of the tax distribution system and tax structure between the central and local governments, which was regarded as a milestone in the transition of China's fiscal system from planned economy to market econo

Finance

Tellus (app)

Tellus App, Inc. (d.b.a. Tellus, previously known as Zilly, Inc.) is an American real estate technology and financial technology company. The company's primary product, an eponymous app, provides a property management and payment system for use in housing rentals, and offers non-FDIC-insured cash accounts targeted at general consumers.

Trading basics

Teras Teknologi

Teras Teknologi Sdn Bhd (TERAS), a subsidiary of PLUS Malaysia Berhad (PMB), is a Malaysian global corporation based in Petaling Jaya.

Banking

The Co-operative Bank

The Co-operative Bank p.l.c. is a British retail and commercial bank based in Manchester, England. Established as a bank for co-operators and co-operatives following the principles of the Rochdale Pioneers, the business evolved in the 20th century into a mid-sized British high street bank, operating throughout the UK mainland. Transactions took place at cash desks in Co-op stores until t

Trading basics

Ticketer

Ticketer is the brand name for a range of electronic ticket machines provided by British company Corvia Ltd, primarily for usage on buses. The cloud-based system, first marketed on a small scale in 2008, has since developed into a rival to the three major ticket issuing systems used by bus companies throughout Britain.

Finance

Tobin's q

Tobin's q (or the q ratio, and Marris's v), is the ratio between a physical asset's market value and its replacement cost. It was first introduced by Robin Marris as a firm-level microeconomic variable in his 1964 book The Economic Theory of Managerial Capitalism, and was shortly afterwards further analysed by Richard Kahn in early drafts of his paper Notes on the Rate of Interest and th

Trading basics

Tontine

A tontine () is an investment linked to a living person which provides an income for as long as that person is alive. Such schemes originated as plans for governments to raise capital in the 17th century and became relatively widespread in the 18th and 19th centuries.

Trading basics

TP ICAP

TP ICAP Group plc is a financial services firm headquartered in London, United Kingdom. Its stock is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.

Finance

Trading room

A trading room gathers traders operating on financial markets. The trading room is also often called the front office. The terms "dealing room" and "trading floor" are also used, the latter being inspired from that of an open outcry stock exchange. As open outcry is gradually replaced by electronic trading, the trading room becomes the only remaining place that is emblematic of the finan

Networks

TRON Network and TRC20

TRON is a blockchain network supporting accounts, transactions, and smart contracts. TRX is its native asset, and TRC20 is a common contract token standard. This article introduces its positioning, mechanisms, verification steps, and common misconceptions.

Trading basics

Trondheim toll scheme

Trondheim Toll Scheme or Trondheim Package (Norwegian: Trondheimspakken) was the result of that in the 1980s politicians and road authorities in Trondheim Municipality, Norway wanted to accelerate the investments in roads and motorways around the city through an investment package and toll scheme to ease construction and generate more funds. Between 1991 and 2005, there were more than 24

Assets

TRX: The Native Asset of TRON

TRX is the native asset of the TRON network, also known as TRONIX. This article covers its positioning, mechanisms, verification checklist, and common misconceptions.

Trading basics

Turnstile

A turnstile (also called a gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one-way human traffic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass, security credential, or other method of payment or verification. Mode

Finance

Tuttle Twins

Tuttle Twins is an American educational animated series distributed by Angel Studios and produced by Tuttle Twins Show LLC, based on the book series of the same name by Connor Boyack. First released on June 30, 2021, the series follows twin siblings Ethan and Emily Tuttle, who travel through space and time with their grandmother Gabby to meet historical figures and learn lessons about to

Trading basics

UK Asset Resolution

UK Asset Resolution (UKAR) is a British financial services holding company with headquarters in the West Yorkshire village of Crossflatts (near Bradford & Bingley's former headquarters in Bingley). It was established in October 2010 as a bad bank to hold the two run-off elements, Bradford & Bingley (including the Mortgage Express brand) and NRAM plc (previously known as Northern Rock Ass

Trading basics

United States v. Banki

In United States v. Banki, 685 F.3d 99 (2nd Cir. 2011) the Second Circuit Court of Appeals overturned the conviction of Mahmoud Reza Banki. Banki had been convicted of multiple crimes related to allegedly conspiring to violate United States sanctions against Iran by transferring large amounts of money — totaling some $3.4 million — from Iran to the United States.

Banking

Unity Trust Bank

Unity Trust Bank plc provides specialist business banking services to trade unions, charities and other organisations that operate in the not-for-profit sector in the United Kingdom and, since 2015, its remit has expanded to include profit-with-purpose businesses. Founded in 1984, head office is located at Four Brindleyplace, Birmingham.

Stablecoins

USD1: Brand, Token, and Reserve Information

USD1 is a US dollar stablecoin associated with the World Liberty Financial brand. This article introduces its positioning, mechanism, verification checklist, and common misconceptions.

Stablecoins

USDC: Native Issuance and Bridged Versions

USDC is a US dollar-backed stablecoin issued by Circle. This article introduces its positioning, mechanism, usage checklist, and common misconceptions.

Stablecoins

USDe: Ethena Synthetic Dollar

USDe is the synthetic dollar asset of the Ethena protocol. This article covers its positioning, mechanism, usage checklist, and common misconceptions.

Stablecoins

USDS: Sky Protocol Stablecoin

USDS is the stablecoin of the Sky protocol and is closely related to the evolution of DAI. This article covers its positioning, mechanism, usage checklist, and common misconceptions.

Stablecoins

USDT: Tether and Network Selection

USDT is a US dollar-denominated stablecoin issued by Tether, designed to maintain a close value relationship with the US dollar. This article introduces its positioning, mechanism, verification checklist, and common misconceptions.

Trading basics

Vasicek model

In finance, the Vasicek model is a mathematical model describing the evolution of interest rates. It is a type of one-factor short-rate model as it describes interest rate movements as driven by only one source of market risk. The model can be used in the valuation of interest rate derivatives, and has also been adapted for credit markets. It was introduced in 1977 by Oldřich Vašíček, an

Trading basics

Video tolling

Video tolling (sometimes referred to as video billing, toll by plate, pay by mail, or pay by plate) is a form of electronic toll collection that uses video or still images of a vehicle's license plate to identify a vehicle liable to pay a road toll. The system dispenses with collection of road tolls using road-side cash or payment card methods, and may be used in conjunction with "all el

Securities & exchanges

Warren Buffett

Warren Edward Buffett ( BUFF-it; born August 30, 1930) is an American investor and philanthropist who is the chairman emeritus and former CEO of the conglomerate Berkshire Hathaway. As a result of his success, Buffett is one of the best-known investors in the world. According to Forbes, as of January 2026, Buffett's estimated net worth stood at US$148.9 billion, making him the ninth-rich

Payments & settlement

WebMoney

WebMoney is an online payment settlement system established in Russia in 1998. It is one of the largest electronic payments processors in Russia by number of users, with the company reporting 45 million registered accounts and 300,000 active weekly users in early 2020, and 100,000 stores accepting payments via the system. WebMoney is owned and operated by WM Transfer Ltd.

Assets

WhopperCoin

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

Fiat currencies

William A. Barnett

William Arnold Barnett (born October 30, 1941) is an American economist, whose current work is in the fields of chaos, bifurcation, and nonlinear dynamics in socioeconomic contexts, econometric modeling of consumption and production, and the study of the aggregation problem and the challenges of measurement in economics.

Finance

World Pensions & Investments Forum

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

Payments & settlement

Worldpay Group

Worldpay Group plc (formerly RBS WorldPay) was a payment processing company. It was formerly listed on the London Stock Exchange until 16 January 2018 when it was acquired by Vantiv. The combined company then took the name Worldpay, Inc. Worldpay, Inc. was acquired by FIS in July 2019 for $43 billion. In 2024, private-equity firm GTCR acquired a majority 55% equity interest in Worldpay.

Finance

Yeouido

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.

Banking

Zombie bank

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.