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Finance

20,000 Colombian peso note

The 20,000 Colombian peso note ($20,000) is one of the notes in circulation in Colombia. It is about 143 × 66 millimeters and the predominant color is orange. The front features former Colombian president Alfonso López Michelsen and a sugar apple, while the reverse shows a sombrero vueltiao and the canals of La Mojana. The first series of 20,000 peso notes was issued from 1996 to 2016. T

Trading basics

Advertiser-funded programming

Advertiser-funded programming (AFP) is a recent term applied to a break away from the modern model of television funding in place since the early 1960s. Since that time, programmes have normally been funded by a broadcaster and they re-couped the money through selling advertising space around the content. This has worked fine for decades, but new technological advances have forced broadc

Finance

Asset pricing

In financial economics, asset pricing refers to the formal development of the principles used in pricing, together with the resultant models. The treatment develops the interrelated paradigms of general equilibrium asset pricing and rational asset pricing, the latter corresponding to risk neutral pricing.

Finance

Association for the Taxation of Financial Transactions and for Citizens' Action

The Association for the Taxation of Financial Transactions and for Citizens' Action (French: Association pour la Taxation des Transactions financières et pour l'Action Citoyenne, ATTAC) is an activist organisation originally created to promote the establishment of a tax on foreign exchange transactions.

Trading basics

Automotive trim level

Trim levels are used by manufacturers to identify a vehicle's level of equipment or special features. The equipment and features fitted to a particular vehicle also depend on any options packages or individual options that the car was ordered with.

Finance

Black–Derman–Toy model

In mathematical finance, the Black–Derman–Toy model (BDT) is a popular short-rate model used in the pricing of bond options, swaptions and other interest rate derivatives; see Lattice model (finance) § Interest rate derivatives. It is a one-factor model; that is, a single stochastic factor—the short rate—determines the future evolution of all interest rates. It was the first model to com

Securities & exchanges

Black–Scholes model

The Black–Scholes or Black–Scholes–Merton model is a mathematical model for the dynamics of a financial market containing derivative investment instruments. From the parabolic partial differential equation in the model, known as the Black–Scholes equation, one can deduce the Black–Scholes formula, which gives a theoretical estimate of the price of European-style options and shows that t

Finance

Bond option

In finance, a bond option is an option to buy or sell a bond at a certain price on or before the option expiry date. These instruments are typically traded OTC.

Trading basics

Bond valuation

Bond valuation is the process of estimating the fair value of a bond. In the prevalent present-value approach, the value equals the sum of expected cash flows discounted at appropriate rates.

Trading basics

Brookstone

Brookstone is a chain of retail stores in the United States and China. It was founded as a mail-order business in 1965, when it started selling items, such as dental clamps and other specialty tools. Its first physical location opened in 1973 in Peterborough, New Hampshire. The company's headquarters are currently located in Merrimack, New Hampshire.

Trading basics

Century 21 Organisation

The Century 21 Organisation was a group of companies founded by Gerry Anderson in the early 1960s to expand on his television production company, AP Films (APF; later Century 21 Productions). In addition to APF, the group included:

Securities & exchanges

Chan–Karolyi–Longstaff–Sanders process

In mathematics, the Chan–Karolyi–Longstaff–Sanders process (abbreviated as CKLS process) is a stochastic process with applications to finance. In particular it has been used to model the term structure of interest rates. The CKLS process can also be viewed as a generalization of the Ornstein–Uhlenbeck process. It is named after K. C. Chan, G. Andrew Karolyi, Francis A. Longstaff, and Ant

Trading basics

Chen model

In finance, the Chen model is a mathematical model describing the evolution of interest rates. It is a type of "three-factor model" (short-rate model) as it describes interest rate movements as driven by three sources of market risk. It was the first stochastic mean and stochastic volatility model and it was published in 1994 by Lin Chen, PhD from Harvard, former economist of Federal Res

Trading basics

Chris Cleverly

Christopher John Cleverly (born 27 July 1967) is a British lawyer, entrepreneur, philanthropist and businessman. A barrister and past Channel 4 TV presenter, he has been involved with ventures in Africa, including the Made in Africa Foundation, AIM-listed African Potash, and Agri-Fintech Holdings, the main shareholder in Nasdaq-listed Tingo Group, a company implicated in US fraud allegat

Trading basics

Claire's

Claire's (formerly known as Claire's Boutiques, Claire's Boutique and Claire's Accessories) is an American retailer of accessories, jewelry, and toys primarily aimed towards tween and teen girls, and young women. It was founded in 1961 and is based in Hoffman Estates, Illinois, a suburb of Chicago. The company is primarily owned by Elliott Management and Monarch Alternative Capital, but,

Finance

Complete market

In economics, a complete market (a.k.a. Arrow-Debreu market or complete system of markets) is a market with two conditions:

Securities & exchanges

Constant elasticity of variance model

In mathematical finance, the constant elasticity of variance model (CEV) is a stochastic volatility model, although technically it would be classed more precisely as a local volatility model, that attempts to capture stochastic volatility and the leverage effect. The model is widely used by practitioners in the financial industry, especially for modelling equities and commodities. It was

Trading basics

Consumer-generated advertising

Consumer-generated advertising is advertising on consumer generated media. This term is generally used to refer to sponsored content on blogs, wikis, forums, social networking services, and individual websites. This sponsored content is also known as sponsored posts, paid posts, or sponsored reviews. The content includes links that point to the home page or specific product pages of the

Trading basics

Cox–Ingersoll–Ross model

In mathematical finance, the Cox–Ingersoll–Ross (CIR) model describes the evolution of interest rates. It is a type of "one factor model" (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. It was introduced in 1985 by John C. Cox, Jonathan E. Ingersoll and Stephen A.

Banking

Debanking

Debanking (sometimes spelled de-banking, and also known within the banking industry as de-risking) is the closure of people's or organizations' bank accounts by banks that perceive the account holders to pose a financial, legal, regulatory, or reputational risk to the bank.

Finance

Derivatives market

The derivatives market is the financial market for derivatives – financial instruments like futures contracts or options – which are derived from other forms of assets.

Finance

Early 1990s depression in Finland

The early 1990s depression in Finland was one of the worst economic crises in Finland's history, by some considered even worse there than the 1930s Great Depression.

Finance

Extreme value theory

Extreme value theory or extreme value analysis (EVA) is the study of extremes in statistical distributions.

Trading basics

FAO Schwarz

FAO Schwarz is an American toy brand and retail chain. The company features high-end toys, toys exclusive to them, life-sized stuffed animals, interactive experiences, brand integrations, and games.

Finance

Fat-finger error

A fat-finger error is a keyboard input error or mouse misclick that occurs from a simple input mistake, causing unwanted secondary behavior. In common parlance, it simply refers to a common typographical error made on a touchscreen or physical keyboard that occurs when the wrong selection is made, or multiple selections are made due to options or keyboard keys being too close together.

Finance

Fundamental theorem of asset pricing

The fundamental theorems of asset pricing (also: of arbitrage, of finance), in both financial economics and mathematical finance, provide necessary and sufficient conditions for a market to be arbitrage-free, and for a market to be complete. An arbitrage opportunity is a way of making money with no initial investment without any possibility of loss. Though arbitrage opportunities do exis

Trading basics

Generic trademark

A generic trademark, also known as a genericized trademark or proprietary eponym, is a trademark or brand name that, because of its popularity or significance, has become the generic term for, or synonymous with, a general class of products, services, or actions, usually against the intentions of the trademark's owner.

Finance

Girsanov theorem

In probability theory, Girsanov's theorem or the Cameron-Martin-Girsanov theorem explains how stochastic processes change under changes in measure.

Finance

Hawkes process

In probability theory and statistics, a Hawkes process is an age-dependent branching process driven by immigration from an inhomogeneous Poisson process. The process, named after Alan G. Hawkes, is also called a self-exciting point process., i.e., the occurrence of an event increases the likelihood of another event occurring. It has arrivals at times

Finance

Heath–Jarrow–Morton framework

The Heath–Jarrow–Morton (HJM) framework is a general framework to model the evolution of interest rate curves – instantaneous forward rate curves in particular (as opposed to simple forward rates). When the volatility and drift of the instantaneous forward rate are assumed to be deterministic, this is known as the Gaussian Heath–Jarrow–Morton (HJM) model of forward rates. For direct mode

Securities & exchanges

Heston model

In finance, the Heston model, named after Steven L. Heston, is a mathematical model that describes the evolution of the volatility of an underlying asset. It is a stochastic volatility model: such a model assumes that the volatility of the asset is not constant, nor even deterministic, but follows a random process.

Trading basics

Ho–Lee model

In financial mathematics, the Ho-Lee model is a short-rate model widely used in the pricing of bond options, swaptions and other interest rate derivatives, and in modeling future interest rates. It was developed in 1986 by Thomas Ho and Sang Bin Lee.

Trading basics

Hull–White model

In financial mathematics, the Hull–White model is a model of future interest rates. In its most generic formulation, it belongs to the class of no-arbitrage models that are able to fit today's term structure of interest rates. It is relatively straightforward to translate the mathematical description of the evolution of future interest rates onto a tree or lattice and so interest rate de

Finance

Ikoyi

Ikoyi is the most affluent island of Lagos, located in Eti-Osa Local Government Area. It lies to the northeast of Obalende and adjoins Lagos Island to the west, and at the edge of the Lagos Lagoon. Popular with the extreme upper class residents of Nigerian society, Ikoyi is arguably one of the wealthiest communities within Nigeria.

Trading basics

IMX (TV series)

IMX (Interactive Music Exchange) is an American music television program that aired daily from 2002 to 2004 on MMUSA (renamed Fuse TV in May 2003). Described as a "fully converged music industry simulation game" and "part TV show, part Internet game," the program asked viewers to register at the network's website and buy ownership interests in popular artists, songs, and albums. In deali

Finance

Incomplete markets

In economics, incomplete markets are markets in which there does not exist an Arrow–Debreu security for every possible state of nature. In contrast with complete markets, this shortage of securities will likely restrict individuals from transferring the desired level of wealth among states.

Trading basics

Itautec

Itautec is a Brazilian electronics company founded in 1979. Currently, its a division of the Itaúsa group, a Brazilian business group.

Finance

Itô calculus

Itô calculus, named after Kiyosi Itô, extends the methods of calculus to stochastic processes such as Brownian motion (see Wiener process). It has important applications in mathematical finance, in stochastic differential equations, and more recently even in machine learning.

Finance

Jump diffusion

Jump diffusion is a stochastic process that involves jumps and diffusion. It is a type of Lévy process. It has important applications in magnetic reconnection, coronal mass ejections, condensed matter physics, and pattern theory and computational vision.

Trading basics

KGS (electronic toll collection)

KGS, acronym for Kartlı Geçiş Sistemi (literally: Pass System with Card), was an electronic toll collection system of contactless smart card type available on toll roads and toll bridges in Turkey. It was abolished on 1 February 2013. The system was adopted to avoid traffic congestion at toll plazas. An alternative to KGS is the OGS system of radio-frequency identification (RFID) transpo

Finance

Korn–Kreer–Lenssen model

The Korn–Kreer–Lenssen model (KKL model) is a discrete trinomial model proposed in 1998 by Ralf Korn, Markus Kreer and Mark Lenssen to model illiquid securities and to value financial derivatives on these.

Finance

Lattice model (finance)

In quantitative finance, a lattice model is a numerical approach to the valuation of derivatives in situations requiring a discrete time model. For dividend paying equity options, a typical application would correspond to the pricing of an American-style option, where a decision to exercise is allowed at the closing of any calendar day up to the maturity. A continuous model, on the othe

Trading basics

LIBOR market model

The LIBOR market model, also known as the BGM Model (Brace Gatarek Musiela Model, in reference to the names of some of the inventors) is a financial model of interest rates. It is used for pricing interest rate derivatives, especially exotic derivatives like Bermudan swaptions, ratchet caps and floors, target redemption notes, autocaps, zero coupon swaptions, constant maturity swaps and

Finance

Malliavin calculus

In probability theory and related fields, Malliavin calculus is a set of mathematical techniques and ideas that extend the mathematical field of calculus of variations from deterministic functions to stochastic processes. In particular, it allows the computation of derivatives of random variables. Malliavin calculus is also called the stochastic calculus of variations. P. Malliavin firs

Trading basics

Marketing channel

A marketing channel consists of the people, organizations, and activities necessary to transfer the ownership of goods from the point of production to the point of consumption. It is the way products get to the end-user, the consumer; and is also known as a distribution channel. A marketing channel is a useful tool for management, and is crucial to create an effective and well-planned ma

Trading basics

Mervyn's

Mervyn's was an American middle-scale department store chain that was based in Hayward, California, and founded by Mervin G. Morris (1920–2021). It carried national brands of clothing, footwear, bedding, bath products, furniture, jewelry, beauty products, electronics, toys, and housewares. Many of the company's stores were opened in shopping malls; however, some locations were operated i

Finance

Ministry of Economy and Finance (Ecuador)

The Ministry of Economy and Finance is a cabinet ministry of the government of Ecuador responsible for overseeing the nation's public finances. The current minister is Sariha Moya since 2025.

Finance

Ministry of Finance (El Salvador)

The Ministry of Finance (Spanish: Ministerio de Hacienda) of El Salvador is the government ministry of El Salvador in charge of directing the fiscal policy on public resources, so that it promotes stability and sustainability of public finances.

Trading basics

No Loan Again, Naturally

"No Loan Again, Naturally" is the twelfth episode of the twentieth season of the American animated television series The Simpsons. It originally aired on Fox in the United States on March 8, 2009. "No Loan Again, Naturally" was written by Jeff Westbrook and directed by Mark Kirkland.

Trading basics

OGS (electronic toll collection)

OGS (Turkish: Otomatik Geçiş Sistemi English: Automated Transit System) was an electronic toll collection system of RFID transponder type available on toll roads and toll bridges in Turkey. The system was adopted to avoid traffic congestion at toll plazas. The successor to OGS is the HGS system of RFID tag type implemented later on at the same toll plazas.

Finance

Option (finance)

In finance, an option is a contract which conveys to its owner, the holder, the right, but not the obligation, to buy or sell a specific quantity of an underlying asset or instrument at a specified strike price on or before a specified date, depending on the style of the option.

Banking

Passbook

A passbook or bankbook is a paper book used to record bank or building society transactions on a deposit account.

Trading basics

Pester power

"Pester power", or "the nag factor", as the phenomenon is known in U.S. literature, is the "tendency of children, who are bombarded with marketers' messages, to unrelentingly request advertised items". The phrase is used to describe the negative connotations of children's influence in their parents' buying habits.

Trading basics

Premium (marketing)

In marketing, premiums are promotional items — toys, collectables, souvenirs and household products — that are linked to a product, and often require proofs of purchase such as box tops or tokens to acquire. The consumer generally has to pay at least the shipping and handling costs to receive the premium. Premiums are sometimes referred to as prizes, although historically the word "prize

Trading basics

Prize (marketing)

Prizes are promotional items—small toys, games, trading cards, collectables, and other small items of nominal value, found in packages of brand-name retail products. These items are generally included in the price of the product, and are included with the intent to boost sales, similar to toys in kid's meals. Collectable prizes produced (and sometimes numbered) in series are used extensi

Trading basics

Product displacement

Product displacement is the removing of trademarked products from primarily visual media in order to avoid the payment of licensing fees, if the trademark owner objects, or if the broadcaster would prefer not to publicise a product for free, if the owners have not paid for it to be included in a programme.

Trading basics

Put–call parity

In financial mathematics, the put–call parity defines a relationship between the price of a European call option and European put option, both with the identical strike price and expiry, namely that a portfolio of a long call option and a short put option is equivalent to (and hence has the same value as) a single forward contract at this strike price and expiry. This is because if the p

Finance

Quantitative analysis (finance)

Quantitative analysis in finance refers to the application of mathematical and statistical methods to problems in financial markets and investment management. Professionals in this field are known as quantitative analysts or quants.

Trading basics

Rational pricing

In financial economics, rational pricing is the assumption that asset pricing models must reflect the arbitrage-free price of the asset

Finance

Reputational damage

Reputational damage is the loss to financial capital, social capital and/or market share resulting from damage to an organization's reputation. This is often measured in lost revenue, increased operating, capital or regulatory costs, or destruction of shareholder value. Ethics violations, safety issues, security issues, a lack of sustainability, poor quality, and lack of or unethical inn

Finance

Ruin theory

In actuarial science and applied probability, ruin theory (sometimes risk theory or collective risk theory) uses mathematical models to describe an insurer's vulnerability to insolvency/ruin. In such models key quantities of interest are the probability of ruin, distribution of surplus immediately prior to ruin, and deficit at time of ruin.

Securities & exchanges

SABR volatility model

In mathematical finance, the SABR model is a stochastic volatility model, which attempts to capture the volatility smile in derivatives markets. The name stands for "stochastic alpha, beta, rho", referring to the parameters of the model. The SABR model is widely used by practitioners in the financial industry, especially in the interest rate derivative markets. It was developed by Patric

Trading basics

Short-rate model

A short-rate model, in the context of interest rate derivatives, is a mathematical model that describes the future evolution of interest rates by describing the future evolution of the short rate, usually written

Finance

Snell envelope

The Snell envelope, used in stochastics and mathematical finance, is the smallest supermartingale dominating a stochastic process. The Snell envelope is named after James Laurie Snell.

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

Swaption

A swaption (a portmanteau of "swap" and "option") is an option granting its owner the right but not the obligation to enter into an underlying swap on specified terms at a future date. In practice the term is most commonly used for options on interest rate swaps, where the holder has the right to enter into a fixed-for-floating interest rate swap.

Trading basics

TGJones

TG Jones High Street Limited is a British newsagent, stationer and book retailer, founded in June 2025 as a result of WHSmith selling its 480-store high street retail and online businesses to Modella Capital. Modella charges the retailer a royalty fee to use the TGJones name.

Trading basics

Thinkbox

Thinkbox is the marketing body for commercial TV in the UK. Its shareholders are Channel 4, ITV, Sky Media and UKTV. Together Thinkbox's shareholders represent over 99% of commercial TV advertising revenue through their owned and partner TV channels. Thinkbox's Associate Members are Amazon, Disney+, DSTv (South Africa), Netflix, STV, TAM Ireland, Think TV (Australia), thinktv (Canada), T

Finance

Tingo Group

Tingo Group, Inc. (formerly Tingo Inc.) was a publicly traded fintech and agri-fintech conglomerate initially established in Nigeria, with operations across Africa, Southeast Asia, and the Middle East.

Trading basics

Toy library

A toy library is a type of library that lends or hires out toys, puzzles, and games. They can function as either as a rental shop, part of a public library, or family resource program. Some toy libraries offer play sessions for families. Toy libraries are internationally federated by the International Toy Library Association (ITLA).

Trading basics

Toyetic

Toyetic is a term that describes the suitability of a media property, such as a cartoon or film, for merchandising tie-in lines of licensed toys, games, and novelties. The term is attributed to Bernard Loomis, a toy-development executive for Kenner Products, in discussing the opportunities for marketing the film Close Encounters of the Third Kind, telling its director Steven Spielberg th

Trading basics

Toys "R" Us

Toys "R" Us is an American toy, clothing, and baby product retailer that was founded in April 1948 by Charles Lazarus in Washington, D.C. The retailer initially began as Children's Supermart, selling furniture until it refocused itself as Toys "R" Us in June 1957.

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