Industry WIKI

On February 14, 2025, Javier Milei, the president of Argentina, promoted a cryptocurrency project called $LIBRA. The price of the meme coin spiked following Milei's promotion but then suffered a severe price drop, leading to allegations of a rug pull scam and $251 million in losses for investors. This scandal has been dubbed Cryptogate. The Economist called it the "first big scandal" of

The Bitfinex cryptocurrency exchange was hacked in August 2016. 119,756 bitcoins, worth about US$72 million at the time, were stolen.

On July 15, 2020, between 20:00 and 22:00 UTC, 130 high-profile Twitter accounts were compromised by outside parties to promote a bitcoin scam. Hackers used social engineering against Twitter employees to gain access to administrative tools, allowing them to post the tweets directly. The scam tweets asked individuals to send bitcoin currency to a specific cryptocurrency wallet, with the

On 18 July, 2024, WazirX, an Indian cryptocurrency exchange, reported a cyberattack in which approximately US$234.9 million (around ₹2,000 crore) in digital assets were stolen from a multi-signature wallet used under a third-party custody arrangement with Liminal Custody. Global analysis later linked the attack to the Lazarus Group, a North Korea–associated threat actor targeting crypto

The 2025 Czech government Bitcoin scandal was a scandal in the Czech Republic that involved a donation of 468 Bitcoins to the country's Ministry of Justice. The Czech daily newspaper, Deník N, reported that the Minister of Justice, Pavel Blažek, accepted the donation from Tomáš Jiřikovský, which was worth one billion Czech koruna at the time (approximately $45,000,000 USD). Jiřikovský ha

2C2P is a financial services company headquartered in Singapore. The company primarily provides payment gateway services to businesses.

Aave is a decentralized finance protocol (DeFi) that enables the lending and borrowing of cryptocurrencies without the involvement of intermediary financial institutions.

Atom Asset Exchange (AAX) was a cryptocurrency exchange that was based in Hong Kong.

Abra is a cryptocurrency wallet and exchange, and digital asset services company with offices in several countries. Its offerings include Abra Private, an SEC-registered investment advisory service for high-net-worth investors and family offices; Abra Prime, a prime broker for digital asset trading, lending, and derivatives; and Abra Treasury, which enables companies to add Bitcoin and d

The accounting rate of return, also known as average rate of return, or ARR, is a financial ratio used in capital budgeting. The ratio does not take into account the concept of time value of money. ARR calculates the return, generated to net income of the proposed capital investment. The ARR is a percentage return. Say, if ARR = 7%, then it means that the project is expected to earn seve

In the United States, the ACH Network is the national automated clearing house (ACH) for electronic funds transfers established in the 1960s and 1970s. It is a financial utility owned by US banks, and is one of the largest payments networks in the United States, both by volume and by customer reach; virtually every bank account in the US, whether personal or commercial, is connected to t

ActivTrades is a UK-based brokerage firm providing an electronic trading platform to trade Forex, Contracts for Difference (CFDs), and spread betting. It provides services to retail and institutional traders via the electronic trading platforms ActivTrader, MetaTrader 4, MetaTrader 5 and TradingView.

The adaptive market hypothesis, as proposed by Andrew Lo is an attempt to reconcile economic theories based on the efficient market hypothesis (which implies that markets are efficient) with behavioral economics, by applying the principles of evolution to financial interactions: competition, adaptation, and natural selection. This view is part of a larger school of thought known as Evolu

ADSS (ADS Securities until 2018) is an Abu Dhabi-based financial services company that provides online trading, investment, wealth management, and asset management services to institutional, private, and retail clients. Established in 2011, ADSS expanded its brokerage activities and operated through subsidiaries and representative offices in financial centres including Hong Kong, Singapo

Adyen is a Dutch payment company with the status of an acquiring bank that allows businesses to accept e-commerce, mobile, and point-of-sale payments. It is listed on the stock exchange Euronext Amsterdam.

Affirm Holdings, Inc. is an American financial technology company and a point-of-sale lender. Founded in 2012 by PayPal co-founder Max Levchin, it is the largest U.S. based buy now, pay later (BNPL) financier. As of 2026, Affirm reports nearly 28 million users and processes $50 billion in annual payments.

Afterpay Limited (abbreviated as Afterpay) is an Australian technology company and a buy now, pay later (BNPL) lender. Founded in 2014 by Nick Molnar and Anthony Eisen, it is now owned by Block, Inc. As of 2023, Afterpay serves 24 million users, processes US$27.3 billion in annual payments, and ranks among the three most-used BNPL services globally.

The Ahmedabad Stock Exchange (ASE) was the second-oldest exchange of India located in Ahmedabad, Gujarat. It was owned by Government of India. Started in 1894, it was closed down in April 2018.

AirTag was a French startup that was acquired by Morpho, at the time a Safran subsidiary, in 2015. It was a mobile shopping and payments provider.

Airwallex is a financial technology company founded in Melbourne, Australia, in 2015. It provides payment processing, foreign exchange, business accounts, corporate cards, and other financial services businesses. In 2019, Airwallex reached a reported valuation of US$8 billion.

Alameda Research was a cryptocurrency trading firm founded in September 2017 by Sam Bankman-Fried and Tara Mac Aulay. In November 2022, Alameda's sister cryptocurrency exchange FTX experienced a solvency crisis that resulted in both companies filing for Chapter 11 bankruptcy. That same month, anonymous sources told The Wall Street Journal that FTX had loaned more than half of its custome

Algorand is a proof-of-stake blockchain and cryptocurrency. Algorand's native cryptocurrency is called ALGO.

Algorithmic trading is a method of executing orders using automated pre-programmed trading instructions accounting for variables such as time, price, and volume. This type of trading attempts to leverage the speed and computational resources of computers relative to human traders. In the twenty-first century, algorithmic trading has been gaining traction with both retail and institutiona

Alipay (simplified Chinese: 支付宝; traditional Chinese: 支付寶; pinyin: zhīfùbǎo) is a third-party mobile and online payment platform, established in Hangzhou, China, in February 2004 by Alibaba Group and its founder Jack Ma. In 2015, Alipay moved its headquarters to Pudong, Shanghai, although its parent company Ant Financial remains Hangzhou-based.

Alpha is a measure of the active return on an investment, the performance of that investment compared with a suitable market index. An alpha of 1% means the investment's return on investment over a selected period of time was 1% better than the market during that same period; a negative alpha means the investment underperformed the market.

Alternative trading system (ATS) is a US and Canadian regulatory term for a non-exchange trading venue that matches buyers and sellers to find counterparties for transactions. Alternative trading systems are typically regulated as broker-dealers rather than as exchanges (although an alternative trading system can apply to be regulated as a securities exchange). In general, for regulatory

Altyn Asyr (lit. 'Golden age') is a Turkmenistani domestic card scheme founded in 2001 by the Central Bank of Turkmenistan. The Altyn Asyr system is an integral part of Turkmenistan's payment infrastructure. Altyn Asyr offers financial services, including credit card, debit card, and prepaid card issuing and network processing.

Andrew Lee, also known as Dangun (born December 1983), is an American entrepreneur and the founder of the VPN service Private Internet Access, which started in 2010. Since 2023, he has been the self-proclaimed King of the non-territorial "Joseon Empire", recognized by Antigua and Barbuda as a successor state to Joseon and the Korean Empire; in the media, he is known as "Crown Prince of K

Animoca Brands Corporation Ltd. is a Hong Kong–based game software company and venture capital company co-founded in 2014 by Yat Siu and David Kim. The company initially focused on developing mobile games, then shifted to blockchain gaming and NFTs in 2018, and to AI in 2025.

Apple Pay is a mobile payment service by Apple that allows users to make payments in person, in iOS apps, and on the web. Supported on iPhone, Apple Watch, iPad, Mac, and Vision Pro, Apple Pay digitizes and can replace a credit or debit card chip and PIN transaction at a contactless-capable point-of-sale terminal. It does not require Apple Pay–specific contactless payment terminals; it c

Apple Wallet (or simply Wallet, known as Passbook prior to iOS 9) is a digital wallet developed by Apple Inc. and included with iOS and watchOS that allows users to store Wallet passes such as coupons, boarding passes, student ID cards, government ID cards, business credentials, resort passes, car keys, home keys, event tickets, public transportation passes, store cards, and – starting w

An application-specific integrated circuit (ASIC ) is an integrated circuit (IC) chip customized for a particular use, rather than intended for general-purpose use, such as a chip designed to run in a digital voice recorder or a high-efficiency video codec. Application-specific standard product chips are intermediate between ASICs and industry standard integrated circuits like the 7400 s

Arbitrage ( , UK also ) is the practice of taking advantage of a difference in prices in two or more markets – striking a combination of matching deals to capitalize on the difference, the profit being the difference between the market prices at which the unit is traded. Arbitrage has the effect of causing prices of the same or very similar assets in different markets to converge.

In finance, arbitrage pricing theory (APT) is a multi-factor model for asset pricing which relates various macro-economic (systematic) risk variables to the pricing of financial assets. Proposed by economist Stephen Ross in 1976, it is widely believed to be an improved alternative to its predecessor, the capital asset pricing model (CAPM). APT is founded upon the law of one price, which

Arkham (legally named Arkham Intelligence, Inc.) is an American company that operates a cryptocurrency exchange platform as well as a public data application that enables users to analyze blockchain and cryptocurrency activity.

An Asian option (or average value option) is a special type of option contract. For Asian options, the payoff is determined by the average underlying price over some pre-set period of time. This is different from the case of the usual European option and American option, where the payoff of the option contract depends on the price of the underlying instrument at exercise; Asian options a

An assassination market is a prediction market where any party can place a bet (using anonymous electronic money and pseudonymous remailers) on the date of death of a given individual. This incentivises assassination of the individual, as parties with advance knowledge of an assassination plot can profit by betting accurately on the date of the death. Because the payoff is for accurately

In financial accounting, an asset is any resource owned or controlled by a business or an economic entity. It is anything (tangible or intangible) that can be used to produce positive economic value. Assets represent the ownership of value that can be converted into cash (although cash itself is also considered an asset).

The term asset swap has a number of different meanings:

Atari SA (formerly Infogrames Entertainment SA (French pronunciation: [ɛ̃fɔɡʁam])), also known as Atari Group, is a Luxembourgish holding company that owns mainly video gaming-related interactive entertainment properties. Atari SA's publishing labels include Atari, Inc. (formerly GT Interactive), Nightdive Studios and Digital Eclipse, and Infogrames. It is known for the RollerCoaster Tyc

Atlantic Money is a London-headquartered financial technology company that offers international money transfers for a fixed fee. The firm was founded in 2020 and officially launched in 2022 by two Americans, Neeraj Baid and Patrick Kavanagh, both early employees of the listed US financial services company Robinhood.

An ATM card is a dedicated payment card issued by a financial institution (i.e. a bank) which enables a customer to access their financial accounts via its and others' automated teller machines (ATMs) and, in some countries, to make approved point of purchase retail transactions. Many ATM cards also doubled as cheque guarantee cards. ATM cards are not credit or debit cards, however most

Augur is a decentralized prediction market platform built on the Ethereum blockchain. Augur is developed by Forecast Foundation, which was founded in 2014 by Jack Peterson, Joey Krug, and Jeremy Gardner. Forecast Foundation is advised by Ron Bernstein, founder of now-defunct company Intrade, and Ethereum founder Vitalik Buterin.

Auroracoin (Abbreviation: AUR; sign: ᚠ) is a peer-to-peer cryptocurrency launched in February 2014 as an Icelandic alternative to bitcoin and the Icelandic króna. The unknown creator or creators use the pseudonym Baldur Friggjar Óðinsson (or Odinsson). They stated that they planned to distribute half of auroracoins that would ever be created to all 330,000 people listed in Iceland's nat

Australian Payments Network Limited (AusPayNet), formerly the Australian Payments Clearing Association (APCA) is the self-regulatory body set up by the payments industry to improve the safety, reliability, equity, convenience and efficiency of payment systems in Australia.

Australian Securities Exchange Ltd (ASX) is an Australian public company that operates Australia's primary securities exchange, the Australian Securities Exchange. The ASX was formed on 1 April 1987, through incorporation under legislation by the Parliament of Australia as an amalgamation of the six state securities exchanges. It merged with the Sydney Futures Exchange in 2006.

An automated clearing house (ACH) is a computer-based electronic network for processing transactions, usually domestic low-value payments, between participating financial institutions. It may support both credit transfers and direct debits. The ACH system is designed to process batches of payments containing numerous transactions, and it charges fees low enough to encourage its use for l

Avalanche is a public blockchain and smart-contract platform launched in September 2020 by the American company Ava Labs. The platform's native cryptocurrency is AVAX.

Azimo B.V. was an online remittance service headquartered in Amsterdam, Netherlands. It also had offices in Kraków, Poland.

B3 S.A. – Brasil, Bolsa, Balcão (in English, B3 – Brazil Stock Exchange and Over-the-Counter Market), formerly BM&FBOVESPA, is a stock exchange located in São Paulo, Brazil, and the second oldest in the country.

The Bachelier model is a model of an asset price under Brownian motion presented by Louis Bachelier in his PhD thesis The Theory of Speculation (French: Théorie de la spéculation), published 1900. It is also called the normal model equivalently (as opposed to log-normal model or Black–Scholes model). One early criticism of the Bachelier model is that the probability distribution which h

In options trading, the backspread is the converse strategy to the ratio spread and is also known as the reverse ratio spread. Using calls, a bullish strategy known as the call backspread can be constructed and with puts, a strategy known as the put backspread can be constructed.

Backwardation is a market condition where the price of a commodity's forward or futures contract price is trading below the spot price.

Balance of trade is the difference between the monetary value of a nation's exports and imports of goods over a certain time period. Sometimes, trade in services is also included in the balance of trade but the official IMF definition only considers goods. The balance of trade measures a flow variable of exports and imports over a given period of time. The notion of the balance of trade

A bank account is a financial account maintained by a bank or other financial institution in which the financial transactions between the bank and a customer are recorded. Each financial institution sets the terms and conditions for each type of account it offers, which are classified in commonly understood types, such as deposit accounts, credit card accounts, current accounts, loan ac

Bank Clearing Center Ltd. (Hebrew: מרכז סליקה בנקאי; known in its abbrevatiion Masav (Hebrew: Masav) operates the national infrastructure for payment transfers in the Israeli economy. Masav leads the payments and clearing sector in Israel and operates advanced payment transfer systems for tens of thousands of organizations, financial entities and government institutions in Israel. The v

Bank fraud is the use of potentially illegal means to obtain money, assets, or other property owned or held by a financial institution, or to obtain money from depositors by fraudulently posing as a bank or other financial institution. In many instances, bank fraud is a criminal offence.

A bank transaction tax is a tax levied on debit (and/or credit) entries on bank accounts. In 1989, at the Buenos Aires meetings of the International Institute of Public Finance, University of Wisconsin–Madison Professor of Economics Edgar L. Feige proposed extending the tax reform ideas of John Maynard Keynes, James Tobin and Lawrence Summers, to their logical conclusion, namely to tax a

The banker of ancient times was employed within financial activities, during the ancient Mesopotamian, ancient Greek and ancient Roman periods.

Under English law, a bank has a general right to combine accounts where a customer has multiple accounts with the same bank. The right has been recognised since at least 1860. However it was not until the 1975 House of Lords decision in National Westminster Bank Ltd v Halesowen Presswork & Assemblies Ltd [1972] AC 785 that it was finally determined that this was a type of set-off righ

The Banking Regulation Act, 1949 is a law in India that regulates all banking companies in India. Passed as the Banking Companies Act 1949, it came into force on 16 March 1949 and changed to Banking Regulation Act 1949 from 1 March 1966. It is applicable in Jammu and Kashmir from 1956. Initially, the law was applicable only to banking companies. But, in 1965 it was amended to make it ap

Banks Board Bureau (BBB) (now replaced by Financial Services Institution Bureau since 2022) was an autonomous body of the Government of India tasked to search and select appropriate personages for the Board of Public Sector Banks, Public Sector Financial Institutions, and Public Sector Insurance Companies and recommend measures to improve Corporate Governance in these Institutions. In 20

"Banq" and "banc" are alternative spellings used in company names to evade legal restrictions on the use of the word 'bank' while maintaining a similar pronunciation. This practice is common in the financial services industry, particularly in the United States.

A barrier option is an option whose payoff is conditional upon the underlying asset's price breaching a barrier level during the option's lifetime.

Basis risk in finance is the risk associated with imperfect hedging due to the variables or characteristics that affect the difference between the futures contract and the underlying "cash" position. It arises because of the difference between the price of the asset to be hedged and the price of the asset serving as the hedge before expiration, namely b = S - F. Barring idiosyncratic inf

A basket option is a financial derivative, more specifically an exotic option, whose underlying is a weighted sum or average of different assets that have been grouped together in a basket. A basket option is similar to an index option, where a number of stocks have been grouped together in an index and the option is based on the price of the index, but differs in that the members and we

In options trading, a bear spread is a bearish, vertical spread options strategy that can be used when the options trader is moderately bearish on the underlying security.

beenz.com was a website that allowed consumers to earn beenz, a type of online currency, for performing activities such as visiting a web site, shopping online, or logging on through an Internet service provider. The beenz e-currency could then be spent with participating online merchants.

The Beirut Central District, historically named "Al-Balad", is the historical and geographical core of Beirut, the capital of Lebanon. Also called downtown Beirut, it has been described as the “vibrant financial, commercial, and administrative hub of the country.” It is thousands of years old, with a traditional focus on business, finance, culture, and leisure.

In finance, the beta (β or market beta or beta coefficient) is a statistic that measures the expected increase or decrease of an individual stock price in proportion to movements of the stock market as a whole. Beta can be used to indicate the contribution of an individual asset to the market risk of a portfolio when it is added in small quantity. It refers to an asset's non-diversifiabl

The bid–ask spread (also bid–offer or bid/ask and buy/sell in the case of a market maker) is the difference between the prices quoted (either by a single market maker or in a limit order book) for an immediate sale (ask) and an immediate purchase (bid) for stocks, futures contracts, options, or currency pairs in some auction scenario. The size of the bid–ask spread in a security is one m

Big Five is the name colloquially given to the five largest banks that dominate the banking industry of Canada: Bank of Montreal (BMO), Bank of Nova Scotia (Scotiabank), Canadian Imperial Bank of Commerce (CIBC), Royal Bank of Canada (RBC), and Toronto-Dominion Bank (TD).

Binance Holdings Ltd., branded Binance, is the largest cryptocurrency exchange in terms of daily trading volume of cryptocurrencies. Binance was founded in 2017 by Changpeng Zhao. It was initially based in China, then moved to Japan, subsequently left Japan for Malta, and now has no official company headquarters.

In finance, the binomial options pricing model (BOPM) provides a generalizable numerical method for the valuation of options. Essentially, the model uses a "discrete-time" (lattice based) model of the varying price over time of the underlying financial instrument, addressing cases where the closed-form Black–Scholes formula is wanting, which in general does not exist for the BOPM.

Bitchcoin is a non-fungible token (NFT) on the Ethereum blockchain. The project was launched in early 2015 as a fork of Bitcoin, several months before the launch of Ethereum. Bitchcoin was originally backed by the artist Sarah Meyohas' photography at a fixed rate of one token to 25 square-inches of one of the artist's photographs. This was one of the first instances of a physical work of

BitClout was an open source blockchain-based social media platform. On the platform, users could post short-form writings and photos, award money to posts they particularly like by clicking a diamond icon, as well as buy and sell "creator coins" (personalized tokens whose value depends on people's reputations). BitClout ran on a custom proof of work blockchain, and was a prototype of wha

Bitcoin (abbreviation: BTC; sign: ₿) is the first decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown person published a white paper under the pseudonym of Satoshi Nakamoto. Use of bitcoin as a currency began in 2009, with the release of its open-source implementation. From 2021 to 2025, El Salvador adopted it as legal tender curren

Bitcoin and politics influence each other in several ways. Governments of several countries use Bitcoin in various capacities, and some politicians use Bitcoin in their electoral programs.

In 2013, Welsh computer engineer James Howells mistakenly disposed of a laptop hard drive containing the private key for 8,000 Bitcoin in the Docksway landfill in Newport, Wales. Howells subsequently assembled a team of specialists and secured funding to excavate the site, but Newport City Council refused permission, citing galvanic corrosion of the device and health concerns of city re

Bitcoin City is a planned smart city project in La Unión, El Salvador. The planned city is intended to be a tax haven, and to use geothermal energy to power Bitcoin mining. The feasibility of its reliance on both geothermal energy and Bitcoin have been the subject of criticism, alongside concerns regarding delays in the project's financing and construction.

El Salvador was the first country in the world to use bitcoin as legal tender, after it was adopted as such by the Legislative Assembly of El Salvador in 2021. It has been promoted by Nayib Bukele, the president of El Salvador, who claimed that it would improve the economy by making banking easier for Salvadorans, and that it would encourage foreign investment. In 2022, more Salvadorians

The Bitcoin Law (Spanish: Ley Bitcoin, pronounced [ˈlej biðˈkojn]) was passed by the Legislative Assembly of El Salvador on 8 June 2021, giving the cryptocurrency bitcoin the status of legal tender within El Salvador after 7 September 2021. It was proposed by President Nayib Bukele. The text of the law stated that "the purpose of this law is to regulate bitcoin as unrestricted legal tend

The bitcoin protocol is the set of rules that govern the functioning of bitcoin. Its key components and principles are: a peer-to-peer decentralized network with no central oversight; the blockchain technology, a public ledger that records all bitcoin transactions; mining and proof of work, the process to create new bitcoins and verify transactions; and cryptographic security.

Bitcoin Satoshi Vision (BSV) is a cryptocurrency that is a hard fork of Bitcoin Cash. Bitcoin Satoshi Vision was created in November 2018 by a group of individuals led by Craig Steven Wright, who has claimed since 2015 to be Satoshi Nakamoto, the creator of the original bitcoin.

Bitcoin scalability refers to the capability of the Bitcoin network to handle large amounts of transaction data on its platform. Records (known as blocks) in the Bitcoin blockchain are limited in size and frequency to prioritize security and decentralization by keeping the cost of running a Bitcoin node affordable. With an average block creation time of 10 minutes and a block size limit

Bitconnect (stylized bitconnect and also spelled BitConnect, ticker code BCC) was an open-source cryptocurrency from 2016 to 2018 that was connected with a high-yield investment program, a type of Ponzi scheme. After the platform administrators closed the earning platform on January 16, 2018, and refunded the users' investments in BCC following a 92% coin value crash, confidence was lost

Bitdeer Technologies Group, or simply Bitdeer, is a cryptocurrency mining and artificial intelligence (AI) cloud infrastructure company headquartered in Singapore and listed on the Nasdaq under the ticker BTDR. The company was spun off from bitcoin-mining chip producer Bitmain in January 2021 by founder Jihan Wu. Bitdeer is among the largest cryptocurrency miners by computing power and o

Bitfinex is a cryptocurrency exchange owned and operated by iFinex Inc, and is registered in the British Virgin Islands and regulated in El Salvador. Bitfinex was founded in 2012. It was originally a peer-to-peer bitcoin exchange, and later added support for other cryptocurrencies. Bitfinex was one of the first professional platforms built for cryptocurrency trading. Bitfinex is the worl

bitFlyer is a Japanese cryptocurrency exchange headquartered in Tokyo. It was founded in 2014 and is one of the largest cryptocurrency exchanges in Japan.

BitFuFu Inc. (Nasdaq: FUFU) is a Bitcoin miner and mining services innovator headquartered in Singapore.

Bitget is a cryptocurrency exchange founded in 2018.

Bitkub is a Thailand-based cryptocurrency exchange operated by Bitkub Online Co., Ltd. (Thai: บริษัทบิทคับ ออนไลน์ จำกัด) under its parent group Bitkub Capital Group Holdings (Bitkub Capital Co., Ltd.). The company was founded in 2018 by Jirayut Srupsrisopa and was among the first exchanges to receive a digital asset license from Thailand’s Securities and Exchange Commission (SEC) in 201

BitMEX was a cryptocurrency exchange and derivative trading platform incorporated in the Seychelles. It was operated by HDR Global Trading Limited.

Bitnation, or crypto nation, was a cryptocurrency-based project self-described as a "voluntary nation", wherein all citizens chose to be citizens, founded in 2014 by Susanne Tarkowski Tempelhof. A part of the process for becoming a citizen involved recording vital records, identity, and other legal events through the use of a smart contract on the Ethereum blockchain.

BitPay is a cryptocurrency payment service provider headquartered in Atlanta, Georgia, United States. It was founded in May 2011 by Tony Gallippi and Stephen Pair. BitPay provides crypto payment processing services for merchants and a cryptocurrency wallet available on mobile and desktop.

Bitstamp is a Luxembourg-based cryptocurrency exchange founded in 2011. Considered the world’s longest-running cryptocurrency exchange, its business operations are conducted from its registered headquarters in Luxembourg City, with a satellite office in Ljubljana.

Bitwala is a Berlin-based cryptocurrency financial services company offering a self-custodial Bitcoin wallet, a Visa debit card, crypto trading, and crypto-backed loans. The company was founded in 2015 by Jörg von Minckwitz, Jan Goslicki, and Benjamin P. Jones. After operating briefly under the name Nuri from 2021 to 2022, the company returned to the Bitwala brand in late 2023 following

bKash Limited (Bengali: বিকাশ d/b/a: bKash) is a mobile financial service (MFS) in Bangladesh operating under the authority of Bangladesh Bank as a subsidiary of BRAC Bank PLC. This mobile financial service company started as a joint venture between BRAC Bank PLC, and Money in Motion LLC.

The Black model (also known as the Black-76 model) is a variant of the Black–Scholes option pricing model. Its primary applications are for pricing options on future contracts, bond options, interest rate cap and floors, and swaptions. It was first presented in a paper written by Fischer Black in 1976.

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