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Digital assets and currencies

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

Trading basics

OneCoin

OneCoin is a fraudulent cryptocurrency scheme conducted by offshore companies OneCoin Ltd (based in Bulgaria and registered in UAE) and OneLife Network Ltd (registered in Belize), both founded by Ruja Ignatova in concert with Sebastian Greenwood. OneCoin is considered a Ponzi scheme due to its organisational structure of paying early investors using money obtained from newer ones. It was

Trading basics

Online video analytics

Online video analytics (also known as Web video analytics) is the measurement, analysis and reporting of videos viewed online. It is used for the purposes of understanding the consumption patterns (behavioral analysis) and optimizing viewing experience (quality of service analysis).

Payments & settlement

Online wallet

An online wallet is a software or web service that allows users to store and control their online shopping information, such as logins, passwords, shipping address and credit card details. It also provides a method for consumers to purchase products from online retailers.

Finance

Open outcry

Open outcry is a method of communication between professionals on a stock exchange or futures exchange, typically on a trading floor. It involves shouting and the use of hand signals to transfer information primarily about buy and sell orders. The part of the trading floor where this takes place is called a pit.

Networks

OpenTimestamps

OpenTimestamps (OTS) is an open-source project that aims to provide a standard format for blockchain timestamping.

Finance

Operating margin

In business, operating margin—also known as operating income margin, operating profit margin, EBIT margin and return on sales (ROS) - is the ratio of operating income ("operating profit" in the UK) to net sales, usually expressed in percent.

Finance

Operating partner

An operating partner is a title used by venture capital (VC) and private equity (PE) firms to describe a role dedicated to working with privately held companies to increase value. The role was created by large-capitalization private equity groups when the importance of driving corporate change to add value increased as sellers became more sophisticated and financial engineering less cent

Finance

Option naming convention

In financial markets, an option naming convention is a method of identifying which of many possible options is being quoted or traded.

Finance

Option time value

In finance, the time value (TV) (extrinsic or instrumental value) of an option is the premium a rational investor would pay over its current exercise value (intrinsic value), based on the probability it will increase in value before expiry. For an American option this value is always greater than zero in a fair market, thus an option is always worth more than its current exercise value.

Finance

Options strategy

Option strategies are the simultaneous, and often mixed, buying or selling of one or more options that differ in one or more of the options' variables. Call options, simply known as Calls, give the buyer a right to buy a particular stock at that option's strike price. Opposite to that are Put options, simply known as Puts, which give the buyer the right to sell a particular stock at the

Payments & settlement

Orange Money

Orange Money is the mobile phone based money transfer service of French telecom company Orange S.A., available in most of the group's affiliates in Africa. Its users can deposit money into an account linked to their mobile phone number, and then access a range of services, in particular transferring money domestically and internationally, paying bills and buying airtime top-up.

Finance

Order book

An order book is the list of orders (manual or electronic) that a trading venue (in particular stock exchanges) uses to record the interest of buyers and sellers in a particular financial instrument. A matching engine uses the book to determine which orders can be fully or partially executed.

Payments & settlement

Osaifu-Keitai

Osaifu-Keitai (おサイフケータイ, Osaifu-Kētai), which means "Wallet Mobile", is the standard mobile payment system in Japan. Osaifu-Keitai services include electronic money, identity card, loyalty card, fare collection of public transits (including railways, buses, and airplanes), or credit card. The term "Osaifu-Keitai" itself is a registered trademark of NTT Docomo.

Fiat currencies

Ouroboros (protocol)

Ouroboros is a family of proof-of-stake consensus protocols used in the Cardano and Polkadot blockchains. It can run both permissionless and permissioned blockchains.

Finance

Outline of corporate finance

The following outline is provided as an overview of and topical guide to corporate finance:

Finance

Outline of finance

The following outline provides an overview and topical guide to finance:

Finance

Over-the-counter (finance)

Over-the-counter (OTC) or off-exchange trading or pink sheet trading is done directly between two parties, without the supervision of an exchange. It is contrasted with exchange trading, which occurs via exchanges. A stock exchange has the benefit of facilitating liquidity, providing transparency, and maintaining the current market price. In an OTC trade, the price is not necessarily pub

Finance

Overdraft

An overdraft occurs when something is withdrawn in excess of what is in a current account. For financial systems, this can be funds in a bank account. In these situations the account is said to be "overdrawn". In the economic system, if there is a prior agreement with the account provider for an overdraft, and the amount overdrawn is within the authorized overdraft limit, then interest i

Finance

P/B ratio

The price-to-book ratio, or P/B ratio, (also PBR) is a financial ratio used to compare a company's current market value to its book value (where book value is the value of all assets minus liabilities owned by a company). The calculation can be performed in two ways, but the result should be the same. In the first way, the company's market capitalization can be divided by the company's t

Trading basics

Pairs trade

A pairs trade or pair trading is a market neutral trading strategy enabling traders to profit from virtually any market conditions: uptrend, downtrend, or sideways movement. This strategy is categorized as a statistical arbitrage and convergence trading strategy. Pair trading was pioneered by Gerry Bamberger and later led by Nunzio Tartaglia's quantitative group at Morgan Stanley in the

Finance

Pakistan Crypto Council

Pakistan Crypto Council (PCC) is a Pakistani regulatory body established to develop policy, infrastructure and regulation for blockchain technology and digital assets within Pakistan. It operates under the Ministry of Finance with input from the State Bank of Pakistan (SBP), Securities and Exchange Commission of Pakistan (SECP), and other federal agencies.

Finance

Paris Saint-Germain FC ownership and finances

Paris Saint-Germain FC were initially fan-owned, with around 20,000 members under a non-profit association governed by 1901 French law (Association PSG). The club was led by board members Guy Crescent, Pierre-Étienne Guyot and Henri Patrelle. In 1973, a group of French businessmen led by Daniel Hechter and Francis Borelli took control of the club. PSG changed ownership in 1991 when Canal

Securities & exchanges

Partial return reverse swap

In finance, partial return reverse swap (PRRS) is a type of derivative swap, a financial contract that transfers a percentage of both the credit risk and market risk of an underlying asset, usually half, while also transferring all of the ownership liabilities for estate planning, tax purposes, and insider trading rules.

Banking

Participation banking

Participation banking is a name given to Islamic banks mainly in Turkey, as well as in the broader MENA region. There are participation banks in Turkey, Pakistan, Bangladesh, Indonesia, Saudi Arabia, Malaysia, the UAE and other Gulf countries.

Payments & settlement

Pay at the pump

Pay at the pump is a system used at many filling stations, where customers can pay for their fuel by inserting a credit card, debit card, or fuel card into a slot on the pump, bypassing the requirement to make the transaction with the station attendant or to walk away from one's vehicle. A few areas have gas stations that use electronic tolling transponders as a method of payment, such a

Payments & settlement

Paya, Inc.

Paya Holdings, Inc. is an American payment processor service that operates in North America and is headquartered in Atlanta, Georgia. As well as its headquarters, it has offices in Florida, Ohio and Virginia.

Payments & settlement

Payanywhere

Payanywhere is a payments platform and app that allows merchants in the United States to accept credit and debit card payments while building customer relationships in-store, online, or on the go. Merchants may accept payments on their smartphone via a Bluetooth card reader or on an in-store “Storefront” solution featuring a tablet and stand, which was introduced on April 8, 2014. PayAny

Payments & settlement

PayBox

PayBox is an Israeli social payment application that facilitates peer-to-peer money transfers, group collections, and payments to businesses. Launched in 2014 by PayBox Ltd, the app was acquired by Israel Discount Bank in 2017 and has since operated as part of the Discount Group.

Finance

Paym

Paym ( PAY-əm) was a mobile payment system provided by banks and building societies in the United Kingdom. Recipients were identified by their mobile phone number instead of bank details such as sort code and account number.

Payments & settlement

PayMe

PayMe (officially known as PayMe from HSBC) is a mobile payment service from HSBC, currently available only for Hong Kong users with local phone numbers and banks. Users can pay businesses, transfer money to one another using a mobile app, linked to their credit card or (any local) bank account.

Finance

Payment

A payment is the tender of something of value, such as money or its equivalent, by one party (such as a person or company) to another in exchange for goods or services provided by them, or to fulfill a legal obligation or philanthropy desire. The party making the payment is commonly called the payer, while the payee is the party receiving the payment. Whilst payments are often made volun

Finance

Payment card industry

The payment card industry (PCI) denotes the payment systems used for debit, credit, prepaid, e-purse, ATM, and POS cards and associated businesses.

Finance

Payment card number

A payment card number, primary account number (PAN), or simply a card number, is the card identifier found on payment cards, such as credit cards and debit cards, as well as stored-value cards, gift cards and other similar cards. In some situations the card number is referred to as a bank card number. The card number is primarily a card identifier and may not directly identify the bank

Payments & settlement

Payment service provider

A payment service provider (PSP) is a third-party company that allows businesses to accept electronic payments, such as credit card and debit card payments. PSPs act as intermediaries between those who make payments, i.e. consumers, and those who accept them, i.e. retailers.

Payments & settlement

Payment Services Directive

The Revised Payment Services Directive (PSD2, Directive (EU) 2015/2366, which replaced the Payment Services Directive (PSD), Directive 2007/64/EC) is an EU Directive, administered by the European Commission (Directorate General Internal Market) to regulate payment services and payment service providers throughout the European Union (EU) and European Economic Area (EEA). The PSD's purpose

Payments & settlement

Payment system

A payment system is any system used to settle financial transactions through the transfer of monetary value. This includes the institutions, payment instruments such as payment cards, people, rules, procedures, standards, and technologies that make its exchange possible. A payment system is an operational network which links bank accounts and provides for monetary exchange using bank dep

Payments & settlement

Payment terminal

A payment terminal, also known as a point of sale (POS) terminal, card machine, credit card machine, card reader, PIN pad, EFTPOS terminal (or by the older term as PDQ terminal which stands for "Process Data Quickly"), is a device which interfaces with payment cards to make electronic funds transfers. The terminal typically consists of a secure keypad (called a PINpad) for entering PIN,

Payments & settlement

Payments Canada

Canadian Payments Association, carrying on business under the brand name Payments Canada, is an organization that operates a payment clearing and settlement system in Canada. The Canadian Payments Association was established by the Canadian Payments Act in 1980. Among other responsibilities, it regulates and maintains directories of bank routing numbers in Canada.

Banking

PayNow

PayNow is a near-instant real-time payment system developed by Association of Banks in Singapore. The interface facilitates inter-bank peer-to-peer and person-to-merchant transactions. The system is supported by all major Singaporean banks and is regulated by the Monetary Authority of Singapore (MAS) and works by transferring funds between two bank accounts.

Payments & settlement

Payoneer

Payoneer Global Inc. is an American financial services company that provides online money transfer, digital payment services and provides customers with working capital.

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

Payments & settlement

PayPoint

PayPoint plc is a British company that provides multichannel payment and retail services across the United Kingdom. Founded in 1996, the company facilitates payments through a nationwide network of convenience stores and offers services including bill payment, mobile phone top-ups, parcel delivery and collection, and Open Banking integrations.

Fiat currencies

Paysafe

Paysafe Limited (formerly known as Optimal Payments PLC) is a multinational online payments company. Paysafe offers payment processing, digital wallet and online cash systems to businesses and consumers, with particular experience of serving the global entertainment sectors. The group offers services both under the Paysafe brand and subsidiary brands that have become part of the group th

Payments & settlement

PaysafeCard

PaysafeCard (until 2024 stylized paysafecard) is a prepaid e-commerce payment solution powered by vouchers. It is part of Paysafe, a global payments platform. PaysafeCard allows customers to pay online without providing personal financial information.

Payments & settlement

PayU

PayU is a Dutch payment service provider to online merchants. The company was founded in 2002, and is headquartered in Hoofddorp.

Payments & settlement

Payzone (Ireland)

Payzone is an Irish consumer payment service provider company based in Dublin. The company processes electronic transactions, including debit and credit card transactions mobile phone top ups, M50 motorway toll payments, Leap travel cards, local property tax payments, pay-by-phone parking, pre-paid and bill pay utility and parcel collection services.

Assets

Peercoin

Peercoin, also known as Peer-to-Peer Coin, or PPC, is a cryptocurrency utilizing both proof-of-stake and proof-of-work systems. It is notable as the first cryptocurrency to implement the proof-of-stake consensus mechanism.

Finance

PEG ratio

The PEG ratio (price/earnings to growth ratio) is a valuation metric for determining the relative trade-off between the price of a stock, the earnings generated per share (EPS), and the company's expected growth.

Payments & settlement

Pepper (payment application)

Pepper (Hebrew: פפר) is an Israeli online banking service of Bank Leumi where all banking services are offered exclusively through a mobile app.

Assets

Perpetual futures

In finance, perpetual futures, also known as perpetual swaps or colloquially as perps, are contract agreements to non-optionally buy or sell an asset at an unspecified point in the future. Perpetual futures are cash-settled, and they differ from regular futures in that they lack a pre-specified delivery date and can thus be held indefinitely without the need to roll over contracts as the

Securities & exchanges

Peter Schiff

Peter David Schiff (; born March 23, 1963; nicknamed "Dr. Doom") is an American stockbroker, financial commentator, and radio personality. He co-founded Echelon Wealth Partners in Canada (formerly Euro Pacific Canada). He is involved in other financial services companies including Euro Pacific Asset Management, as an independent investment advisor, and Schiff Gold (formerly Euro Pacific

Assets

Petro (token)

The petro (₽), or petromoneda, launched in February 2018, was a crypto token issued by the government of Venezuela.

Securities & exchanges

Pin risk

Pin risk occurs when the market price of the underlier of an option contract at the time of the contract's expiration is close to the option's strike price. In this situation, the underlier is said to have pinned. The risk to the writer (seller) of the option is that they cannot predict with certainty whether the option will be exercised or not. So the writer cannot hedge their position

Payments & settlement

Pine Labs

Pine Labs is an Indian multinational Financial Technology company headquartered in Noida, Uttar Pradesh, that provides point of sale (POS) systems and payment systems. Founded in 1998, it facilitates digital payments through Android-based POS machines that are primarily used by retailers in India, UAE, and Malaysia.

Trading basics

Pineapple Fund

The Pineapple Fund was a philanthropic project by an anonymous individual which gave away 5,057 bitcoins to 60 charities. The amount was valued at $86 million in December 2017. Some of the themes supported were medical research, environmental conservation, human rights and psychedelic therapy.

Payments & settlement

Pix (payment system)

Pix (Portuguese pronunciation: [ˈpiks]) is an instant payment platform created and managed by the Central Bank of Brazil (BCB). It enables free instant transfers between individuals in Brazilian real 24 hours a day without interruption, even outside banking hours and during holidays or weekends; payments made and received by legal entities may be subject to fees.

Payments & settlement

Plastic card

Plastic cards usually serve as identity documents, thus providing authentication. In combination with other assets that complement the data stored on the card, like PINs, they also serve authorization purposes, most often as debit or credit cards for allowing their holders to make financial transactions. Early and simpler cards feature only hard-to-imitate integrated photographs, securit

Payments & settlement

Point of sale

The point of sale (POS), or point of purchase (POP), is the time and place at which a retail transaction is completed. At the point of sale, the merchant calculates the amount owed by the customer, indicates that amount, may prepare an invoice for the customer (which may be a cash register printout), and indicates the options for the customer to make payment. It is also the point at wh

Trading basics

Point-of-sale malware

Point-of-sale malware (POS malware) is usually a type of malicious software (malware) that is used by cybercriminals to target point of sale (POS) and payment terminals with the intent to obtain credit card and debit card information, a card's track 1 or track 2 data and even the CVV code, by various man-in-the-middle attacks, that is the interception of the processing at the retail chec

Payments & settlement

POLi Payments

POLi Payments Pty Ltd (formerly known as Centricom) is an online payments company based in Melbourne, Australia. It is the developer and provider of POLi, an online payment system that is used by merchants and customers in Australia and New Zealand. POLi Payments was acquired by SecurePay Holdings, a fully owned subsidiary of Australia Post, in December 2014.

Networks

Polkadot (blockchain platform)

Polkadot is a decentralized, nominated proof-of-stake blockchain with smart contract functionality. The cryptocurrency native to the blockchain is the DOT.

Networks

Polygon (blockchain)

Polygon (formerly Matic Network) is a blockchain platform which aims to create a multi-chain blockchain system compatible with Ethereum. As with Ethereum, it uses a proof-of-stake consensus mechanism for processing transactions on-chain. Polygon's native token is POL, an ERC-20 token which allows for compatibility with other Ethereum cryptocurrencies. It is operated by Polygon Labs.

Finance

Portfolio (finance)

In finance, a portfolio is a collection of investments.

Finance

Position (finance)

In finance, a position is the amount of a particular security, commodity or currency held or owned by a person or entity.

Finance

Postepay

Postepay is an Italian company that offers a prepaid card service, launched at the end of 2003 and still marketed by Poste Italiane, which can be used anywhere in Italy (ATM and POS of the Postamat and Visa Electron circuits) and abroad (ATM and POS of the Visa/Visa Electron circuit), on the Internet (in sites that accept Visa and Visa Electron cards) and in all Italian post offices thro

Payments & settlement

Powa Technologies

Powa Technologies was a UK-based technology company, known for its commerce, mobile commerce and e-commerce services.

Securities & exchanges

Power reverse dual-currency note

A dual-currency note (DC) pays coupons in the investor's domestic currency with the notional in the issuer's domestic currency. A reverse dual-currency note (RDC) is a note which pays a foreign interest rate in the investor's domestic currency. A power reverse dual-currency note (PRDC) is a structured product where an investor is seeking a better return and a borrower a lower rate by tak

Trading basics

Prediction market

Prediction markets, also known as betting markets, information markets, decision markets, idea futures, or event derivatives, are open markets that enable the prediction of specific outcomes using financial incentives. They are exchange-traded markets established for trading bets in the outcome of various events.

Securities & exchanges

Preferred stock

Preferred stock (also called preferred shares, preference shares, or simply preferreds) is a component of share capital that may have any combination of features not possessed by common stock, including properties of both an equity and a debt instrument, and is generally considered a hybrid instrument. Preferred stocks are senior (i.e., higher ranking) to common stock but subordinate to

Finance

Present value of growth opportunities

In corporate finance,

Finance

Price discovery

In economics and finance, the price discovery process (also called price discovery mechanism) is the process of determining the price of an asset in the marketplace through the interactions of buyers and sellers.

Finance

Price-to-cash flow ratio

The price/cash flow ratio (also called price-to-cash flow ratio or P/CF), is a financial ratio used to compare a company's market value to its cash flow. It is calculated by dividing the company's market cap by the company's operating cash flow in the most recent fiscal year (or the most recent four fiscal quarters); or, equivalently, divide the per-share stock price by the per-share ope

Finance

Price–earnings ratio

The price–earnings ratio (P/E ratio, P/E, or PER) is the ratio of a company's share price to the company's earnings per share. The ratio is used for valuing companies and to find out whether they are overvalued or undervalued.

Finance

Price–sales ratio

The price-to-sales ratio (P/S ratio or PSR) is a financial ratio used to assess a company's market value relative to its revenue. It is calculated by dividing the company's market capitalization by its total revenue over a specified period, typically the trailing twelve months (TTM), or equivalently, by dividing the unit price of each share by the per-share revenue. Investors use this me

Finance

Primary market

The primary market is the part of the capital market that deals with the issuance and sale of securities to purchasers directly by the issuer, with the issuer being paid the proceeds. A primary market means the market for new issues of securities, as distinguished from the secondary market, where previously issued securities are bought and sold. A market is primary if the proceeds of sal

Banking

Private banking

Private banking is a general description for banking, investment and other financial services provided by banks and financial institutions primarily serving high-net-worth individuals (HNWIs) – those with very high income or substantial assets. Private banking is presented by those who provide such services as an exclusive subset of wealth management services, provided to particularly af

Finance

Private equity fund

A private equity fund (PE fund) is a collective investment scheme used for making investments in various equity (and to a lesser extent debt) securities according to one of the investment strategies associated with private equity. Private equity funds are typically limited partnerships with a fixed term of 10 years (often with one- or two-year extensions). At inception, institutional inv

Banking

Private equity in the 1990s

Private equity in the 1990s relates to one of the major periods in the history of private equity and venture capital. Within the broader private equity industry, two distinct sub-industries, leveraged buyouts and venture capital, experienced growth along parallel although interrelated tracks.

Banking

Probability of default

Probability of default (PD) is a financial term describing the likelihood of a default over a particular time horizon. It provides an estimate of the likelihood that a borrower will be unable to meet its debt obligations.

Banking

Profit and loss sharing

Profit and Loss Sharing (also called PLS or participatory banking) refers to Sharia-compliant forms of equity financing such as mudarabah and musharakah. These mechanisms comply with the religious prohibition on interest on loans that most Muslims subscribe to. Mudarabah (مضاربة) refers to "trustee finance" or passive partnership contract, while Musharakah (مشاركة or مشركة) refers to equ

Finance

Profit margin

Profit margin is a financial ratio that measures the percentage of profit earned by a company in relation to its revenue. Expressed as a percentage, it indicates how much profit the company makes for every dollar of revenue generated. Profit margin is important because this percentage provides a comprehensive picture of the operating efficiency of a business or an industry. All margin ch

Assets

Proof of space

Proof of space (PoS) is a type of consensus algorithm achieved by demonstrating one's legitimate interest in a service (such as sending an email) by allocating a non-trivial amount of memory or disk space to solve a challenge presented by the service provider. The concept was formulated in 2013 by Dziembowski et al. and (with a different formulation) by Ateniese et al..

Assets

Proof of stake

Proof-of-stake (PoS) protocols are a class of consensus mechanisms for blockchains that work by selecting validators in proportion to their quantity of holdings in the associated cryptocurrency. This is done to avoid the computational cost of proof-of-work (PoW) schemes. The first functioning use of PoS for cryptocurrency was Peercoin in 2012, although its scheme, on the surface, still r

Assets

Proof of work

Proof of work (also written as proof-of-work, and abbreviated PoW) is a form of cryptographic proof in which one party (the prover) proves to others (the verifiers) that a certain amount of a specific computational effort has been expended. Verifiers can subsequently confirm this expenditure with minimal effort on their part. The concept was first proposed by Moni Naor and Cynthia Dwork

Securities & exchanges

Property derivative

A property derivative is a financial derivative whose value is derived from the value of an underlying real estate asset. In practice, because individual real estate assets fall victim to market inefficiencies and are hard to accurately price, property derivative contracts are typically written based on a real estate property index. In turn, the real estate property index attempts to a

Finance

Proprietary trading

Proprietary trading (also known as prop trading) occurs when a trader trades stocks, bonds, currencies, commodities, their derivatives, or other financial instruments with the firm's own money (instead of using customer funds) to make a profit for itself.

Finance

Prudential capital controls

Prudential capital controls are ways of financial regulation that aim to mitigate risk to the financial system as a whole, usually taking the form of residency-based measures such as transaction taxes, other limits, or outright prohibitions that a nation's government can use to regulate flows from capital markets into and out of the country's capital account. Prudential capital controls

Securities & exchanges

Public float

In the context of stock markets, the public float or free float represents the portion of shares of a corporation that are in the hands of public investors as opposed to shares held by promoters, company officers, controlling interest investors, or governments. This number is sometimes seen as a better way of calculating market capitalization, because it provides a more accurate reflecti

Finance

Public offering

A public offering is the offering of securities of a company or a similar corporation to the public. Generally, the securities are to be publicly listed. In most jurisdictions, a public offering requires the issuing company to publish a prospectus detailing the terms and rights attached to the offered security, as well as information on the company itself and its finances. Many other reg

Banking

Public-key cryptography

Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a public key and a corresponding private key. Key pairs are generated with algorithms based on mathematical problems termed one-way functions. Security of public-key cryptography depends on keeping the private key secret; the public key can

Finance

Pump and dump

Pump and dump (P&D) is a form of securities fraud that involves artificially inflating the price of an owned stock through false and misleading positive statements (pump), in order to sell the cheaply purchased stock at a higher price (dump).

Finance

Put option

In finance, a put or put option is a derivative instrument in financial markets that gives the holder (i.e. the purchaser of the put option) the right to sell an asset (the underlying), at a specified price (the strike), by (or on) a specified date (the expiry or maturity) to the writer (i.e. seller) of the put. The purchase of a put option is interpreted as a negative sentiment about th

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

Trading basics

Puzzle friendliness

In cryptography, puzzle friendliness is a property of some cryptographic hash functions. SHA-256 is a cryptographic hash function that is thought to have this property. Informally, a hash function is puzzle friendly if no solution exists which is better than just making random guesses, and the only way to find a solution is the brute force method. Although the property is very general, i

Trading basics

Qiwi

QIWI plc was a Russian company that provides payment and financial services in Russia and CIS countries. The group includes QIWI payment system, QIWI Bank, CONTACT money transfer system, Factoring PLUS, Flocktory, and RealWeb. The company has representative offices in three countries.

Payments & settlement

QR code payment

A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment networks, payment terminal and merchant accounts.

Fiat currencies

QRIS

Quick Response Code Indonesia Standard (abbreviated as QRIS, the abbreviation being a wordplay on keris, a traditional sword; Indonesian: Kode QR Standar Indonesia) is a QR code payment system developed by Bank Indonesia (BI) and the Indonesian Payment System Association (ASPI) aimed to integrate all non-cash payment methods in Indonesia. Launched in 2019, the system enables peer-to-peer

Trading basics

Quadriga (cryptocurrency exchange)

Quadriga Fintech Solutions was the owner and operator of QuadrigaCX. QuadrigaCX was believed to be Canada's largest cryptocurrency exchange at the time of its collapse in 2019, with the exchange ceasing operations and the company filing for bankruptcy with C$215.7 million in liabilities and about C$28 million in assets.

Payments & settlement

Quahl

Quahl ( k-oo-ah-l), formerly known as Initiative Q, was an attempt to create a new payment network and digital currency. It was created by Israeli entrepreneur Saar Wilf, who previously founded Fraud Sciences, a payment security company acquired by PayPal. Quahl is backed by Cato Institute economist Lawrence H. White. The initiative has indicated it will not take measures to evade state

Finance

Quality investing

Quality investing is an investment strategy based on a set of clearly defined fundamental criteria that seeks to identify companies with outstanding quality characteristics. The quality assessment is made based on soft (e.g. management credibility) and hard criteria (e.g. balance sheet stability). Quality investing supports best overall rather than best-in-class approach.