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Digital assets and currencies

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

Trading basics

Nominal interest rate

In finance and economics, the nominal interest rate or nominal rate of interest is the rate of interest stated on a loan or investment, without any adjustments for inflation.

Fiat currencies

Nominal rigidity

In economics, nominal rigidity, also referred to as price stickiness or wage stickiness, describes a situation in which a nominal price is slow to adjust or resistant to change. Complete nominal rigidity occurs when a price remains fixed in nominal terms for a relevant period of time. For example, the price of a good may be contractually set at $10 per unit for an entire year, regardles

Finance

Non-bank financial institution

A non-banking financial institution (NBFI) or non-bank financial company (NBFC) is a financial institution that is not legally a bank; it does not have a full banking license or is not supervised by a national or international banking regulatory agency. NBFC facilitate bank-related financial services, such as investment, risk pooling, contractual savings, and market brokering. Examples

Fiat currencies

Non-decimal currency

A non-decimal currency is a currency that has sub-units that are a non-decimal fraction of the main unit, i.e. the number of sub-units in a main unit is not a power of 10. Historically, most currencies were non-decimal, though virtually all are now decimal.

Fiat currencies

Non-deliverable forward

In finance, a non-deliverable forward (NDF) is an outright forward contract or futures contract in which counterparties settle the difference between the contracted NDF price or rate and the prevailing spot price or rate on an agreed notional amount. It is used in various markets such as foreign exchange and commodities. NDFs are also known as forward contracts for differences (FCD).

Networks

Non-fungible token

A non-fungible token (NFT) is a unique digital identifier that is recorded on a blockchain and is used to certify ownership and authenticity. They typically contain references to digital files such as artworks, photos, videos, and audio. Because NFTs are uniquely identifiable, they differ from cryptocurrencies (which are fungible, hence the name non-fungible token), and as a result they

Trading basics

Non-performing loan

A non-performing loan (NPL) or non-performing asset (NPA) is a bank loan that is subject to late repayment or is unlikely to be repaid by the borrower in full. Non-performing loans represent a major challenge for the banking sector, as they reduce profitability. They are often claimed to prevent banks from lending more to businesses and consumers, which in turn slows economic growth, alt

Trading basics

Nonrecourse debt

Nonrecourse debt or a nonrecourse loan (sometimes hyphenated as non-recourse) is a secured loan (debt) that is secured by a pledge of collateral, typically real property, but for which the borrower is not personally liable. If the borrower defaults, the lender can seize and sell the collateral, but if the collateral sells for less than the debt, the lender cannot seek that deficiency ba

Trading basics

Nookazon

Nookazon () is a fan-made website that allows players of the 2020 video game Animal Crossing: New Horizons to trade and sell items in-game using their services. The website is named after Amazon, although it more closely resembles Craigslist and eBay.

Trading basics

Nord Pool

Nord Pool AS is a pan-European power exchange. Nord Pool has its main office in Oslo and further offices in Stockholm, Helsinki, Tallinn and London. The company is owned by the European exchange operator Euronext as well as TSO Holding, which represents the continental Nordic and Baltic countries' transmission system operators (TSOs: Fingrid, Energinet, Statnett, Svenska Kraftnät, and L

Networks

Northern Data

Northern Data AG is a multinational technology company headquartered in Germany. It provides GPU infrastructure on demand for high-performance computing in sectors including artificial intelligence, big data analytics, rendering, and cloud computing. Services include a platform for processing large data sets. Formed in 2019 through the merger of Northern Bitcoin and Whinstone, it has two

Finance

Northern Quarter, Brussels

The Northern Quarter (French: Quartier Nord [kaʁtje nɔʁ] or Espace Nord [ɛspas nɔʁ]; Dutch: Noordwijk [ˈnoːrtʋɛik] or Noordruimte [ˈnoːrtˌrœymtə]) is the central business district of Brussels, Belgium. Like La Défense in Paris, the Docklands in London or the Zuidas in Amsterdam, the Northern Quarter consists of a concentration of high-rise buildings where many Belgian and multinational

Finance

Nouriel Roubini

Nouriel Roubini (born March 29, 1958) is a Turkish-born American economic consultant, economist, speaker, and writer. He is a professor emeritus since 2021 at the Stern School of Business of New York University. Roubini earned a BA in political economics at Bocconi University in Italy and a doctorate in international economics at Harvard University. He was an academic at Yale University

Finance

Novalnet

Novalnet is a European payment service provider that provides e-commerce businesses with electronic and point-of-sale payment processing services. The Novalnet platform is designed to automate merchants' business processes across the e-commerce value chain, from checkout to debt collection.

Trading basics

Novated lease

A novated lease is a motor vehicle lease which has been novated, that is, the obligations in the contract have been transferred from one party to another. In Australia, it refers almost exclusively to the practice of salary packaging a motor vehicle using a novated lease.

Securities & exchanges

Novation

Novation, in contract law and business law, is the act of –

Trading basics

Novig

Novig is a sports-focused prediction market platform based in New York City. It is regulated as a financial exchange rather than a sportsbook.

Finance

Numerix

Numerix is an American capital markets analytics and risk management technology company headquartered in New York City. It develops pricing, risk management, and portfolio analytics software for financial derivatives, structured products, fixed income securities, and convertible securities, serving sell-side institutions including banks and broker-dealers, and buy-side participants inclu

Fiat currencies

Numismatics

Numismatics is the study or collection of currency, including coins, tokens, paper money, medals, and related objects.

Trading basics

Nutraceutical

Nutraceutical is a marketing term used to imply a pharmaceutical effect from plant extracts, compounds, or food products that are claimed to influence health outcomes, typically as dietary supplements.

Assets

Nxt

NXT is an open source cryptocurrency and payment network launched in 2013 by anonymous software developer BCNext. It uses proof-of-stake to reach consensus for transactions—as such, there is a static money supply. Unlike Bitcoin, there is no mining.

Banking

NYCE

The New York Cash Exchange (NYCE) is an interbank network connecting the ATMs of various financial institutions in the United States and Canada. NYCE also serves as an EFTPOS network for NYCE-linked ATM cards.

Networks

Nym Technologies

Nym Technologies is a Swiss company that provides internet privacy technology utilizing Nym mix network and noise generation networks. Nym offers VPN and blockchain-related software and network services. Its most notable service, NymVPN, advertises itself as a VPN service for privacy and security.

Trading basics

NZX

NZX is the national stock exchange of New Zealand and, as NZX Limited, is also a publicly owned company listed on the exchange it operates. NZX is the parent company of Smartshares and Wealth Technologies.

Finance

O2 Money

O2 Money was a range of financial services provided by O2 in the United Kingdom.

Finance

Odd lotter

An odd lotter is an investor who purchases shares or other securities in small or unusual quantities. Stocks are typically traded in increments of 100 shares, a quantity known as a round lot or board lot. The cost of 100 shares of a security may be beyond the means of an individual investor, or may represent a larger investment than the investor wishes to make. Thus, the investor purcha

Trading basics

Odious debt

In international law, odious debt, also known as illegitimate debt, is a legal theory that says that the national debt incurred by a despotic regime should not be enforceable. Such debts are, thus, considered by this doctrine to be personal debts of the government that incurred them and not debts of the state. In some respects, the concept is analogous to the invalidity of contracts sign

Networks

Odysee

Odysee is an American video hosting platform which uses a combination of decentralized servers and the LBRY blockchain. The service was created in December 2020. The site is based on a broad interpretation of the concept of freedom of speech.

Banking

Of Unknown Origin

Of Unknown Origin is a 1983 psychological horror film directed by George P. Cosmatos in his North American film debut, and starring Peter Weller, Jennifer Dale, Lawrence Dane, Kenneth Welsh, Louis Del Grande, and Shannon Tweed in her film debut. Based on the novel The Visitor by Chauncey G. Parker III, it focuses on a mild-mannered Manhattan banker who becomes increasingly obsessive and

Trading basics

Office for Budget Responsibility

The Office for Budget Responsibility (OBR) is a non-departmental public body funded by the UK Treasury that provides independent economic forecasts and independent analysis of the public finances.

Banking

Office of Fair Trading v Abbey National plc

Office of Fair Trading v Abbey National plc and Others [2009] UKSC 6 is a judicial decision of the United Kingdom Supreme Court relating to bank charges in the United Kingdom, with reference to the situation where a bank account holder goes into unplanned overdraft.

Finance

Office of Financial Research

The Office of Financial Research (OFR) is an independent bureau reporting to the United States Department of the Treasury. Created in the aftermath of the 2008 financial crisis, the OFR monitors and collects data to identify risks across the financial system.

Trading basics

Office of Tax Simplification

The Office of Tax Simplification was an independent office of HM Treasury, part of the Government of the United Kingdom. The office was created on 20 July 2010 to identify complexities in the tax system burdensome to both businesses and individual taxpayers in order to recommend their reduction. The office was tasked with publishing its findings for the Chancellor of the Exchequer to con

Finance

Office of the Superintendent of Financial Institutions

The Office of the Superintendent of Financial Institutions (OSFI; French: Bureau du surintendant des institutions financières, BSIF) is an independent agency of the Government of Canada reporting to the Minister of Finance created "to contribute to public confidence in the Canadian financial system". It is the sole regulator of banks, and the primary regulator of insurance companies, tru

Banking

Official cash rate

The official cash rate (OCR) is the term used in Australia and New Zealand for the bank rate and is the rate of interest which the central bank charges on overnight loans between commercial banks. This allows the Reserve Bank of Australia and the Reserve Bank of New Zealand to adjust the interest rates that apply in each country's economy. The OCR cannot be changed by transactions betwee

Banking

Offshore bank

An offshore bank is a bank that is operated and regulated under international banking license (often called offshore license), which usually prohibits the bank from establishing any business activities in the jurisdiction of establishment. Due to less regulation and transparency, accounts with offshore banks were often used to hide undeclared income. Since the 1980s, jurisdictions that p

Finance

Offshore company

The term "offshore company" or "offshore corporation" is used in at least two distinct and different ways. An offshore company may be a reference to:

Trading basics

Offshore financial centre

An offshore financial centre (OFC) is defined as a "country or jurisdiction that provides financial services to nonresidents on a scale that is incommensurate with the size and the financing of its domestic economy."

Finance

Offshore fund

An offshore fund is generally a collective investment scheme domiciled in an offshore jurisdiction. Like the term "offshore company", the term is more descriptive than definitive, and both the words 'offshore' and 'fund' may be construed differently.

Finance

Offshore investment

Offshore investment is the keeping of money in a jurisdiction other than one's country of residence. Offshore jurisdictions are used to pay less tax in many countries by large and small-scale investors. Poorly regulated offshore domiciles have served historically as havens for tax evasion, money laundering, or to conceal or protect illegally acquired money from law enforcement in the inv

Finance

Offshore trust

An offshore trust is a conventional trust that is formed under the laws of an offshore jurisdiction.

Finance

Offshoring

Offshoring is the relocation of a business process from one country to another—typically an operational process, such as manufacturing, or supporting processes, such as accounting. Usually this refers to a company business, although state governments may also employ offshoring. More recently, technical and administrative services have been offshored.

Trading basics

OFX (company)

OFX Group Limited is an Australian financial technology company that provides international payments, foreign exchange and spend management services. It is headquartered in Sydney and listed on the Australian Securities Exchange.

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

Oki Electric Industry

Oki Electric Industry Co., Ltd. (沖電気工業株式会社, Oki Denki Kōgyō Kabushiki-gaisha), commonly referred to as OKI (), is a Japanese information and communications technology company, headquartered in Toranomon, Minato-ku, Tokyo and operating in over 120 countries around the world.

Assets

OKX

OKX, formerly known as OKEx, is a cryptocurrency exchange based in San Jose, California.

Securities & exchanges

Old Saint Petersburg Stock Exchange and Rostral Columns

The Old Saint Petersburg Stock Exchange (also Bourse) and Rostral Columns, located in Saint Petersburg in the Russian Federation, are significant examples of Greek Revival architecture. Designed by French architect Thomas de Thomon, and inspired by the Greek Temple of Hera at Paestum, the stock exchange was constructed between 1805 and 1810. The rostral columns erected on either side of

Finance

Oleg Itskhoki

Oleg Itskhoki (born in Moscow on January 7, 1983) is a Russian-American economist specialized on macroeconomics and international economics and (as of 2024) a professor of economics at the Harvard University. He won the John Bates Clark Medal for his "fundamental contributions to both international finance and international trade" in 2022.

Networks

Olympics Go! Paris 2024

Olympics Go! Paris 2024 (stylized as Olympics GO! Paris 2024) is a 2024 city-building and sports video game published by nWay and officially licensed with the International Olympic Committee (IOC) to coincide with the 2024 Summer Olympics.

Trading basics

Omani rial

The Omani rial (Arabic: ريال, symbol: ; currency code: OMR) is the currency of Oman. It is divided into 1000 baisa (also written baiza, بيسة).

Trading basics

Omnichannel

Omnichannel is a neologism describing a business strategy. According to Frost & Sullivan, omnichannel is defined as "seamless and effortless, high-quality customer experiences that occur within and between contact channels".

Securities & exchanges

OMX Stockholm 30

The OMX Stockholm 30 (OMXS30) is a stock market index for the 30 largest and most traded stocks on the Nasdaq Stockholm stock exchange. It is a price return and modified free float capitalization-weighted index.

Trading basics

One Equity Partners

One Equity Partners is a private equity firm with over $10 billion in assets under management which primarily deals with the industrial, healthcare and technology sectors in North America and Europe. One Equity Partners was the merchant banking arm of JPMorgan Chase, focused on leveraged buyout and growth capital investments in middle-market companies. Formed by Bank One in 2001, the gro

Securities & exchanges

OneChicago

OneChicago was a US-based all-electronic futures exchange with headquarters in Chicago, Illinois. The exchange offered approximately 12,509 single-stock futures (SSF) products with names such as IBM, Apple and Google. All trading was cleared through Options Clearing Corporation (OCC). The OneChicago exchange closed in September 2020.

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 ticket brokering

Online ticket brokering is the resale of tickets through a web-based ticket brokering service or online ticket exchanges. Prices on ticket brokering websites are determined by demand, availability, and the ticket reseller. Tickets sold through an online ticket brokering service may or may not be authorized by the official seller.

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.

Fiat currencies

Onno Ruding

Herman Onno Christiaan Rudolf "Onno" Ruding (born 15 August 1939) is a retired Dutch politician of the Christian Democratic Appeal (CDA) party and businessman.

Banking

Open banking

In financial services, open banking allows for financial data to be shared between banks and third-party service providers through the use of application programming interfaces (APIs). Traditionally, banks have kept customer financial data within their own closed systems. Open banking allows customers to share their financial information securely and electronically with other banks or ot

Finance

Open Financial Exchange

Open Financial Exchange (OFX) is a data stream format for exchanging financial information that evolved from Microsoft's Open Financial Connectivity (OFC) and Intuit's Open Exchange file formats.

Banking

Open market operation

In macroeconomics, an open market operation (OMO) is an activity by a central bank to exchange liquidity in its currency with a bank or a group of banks. The central bank can either transact government bonds and other financial assets in the open market or enter into a repurchase agreement or secured lending transaction with a commercial bank. The latter option, often preferred by centra

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.

Trading basics

Open road tolling

Open road tolling (ORT), also called all-electronic tolling, cashless tolling, or free-flow tolling, is the collection of tolls on toll roads without the use of tollbooths. An electronic toll collection system is usually used instead. The major advantage to ORT is that users are able to drive through the toll plaza at highway speeds without having to slow down to pay the toll. In some in

Finance

Open-high-low-close chart

An open-high-low-close chart (OHLC), also called OHLC bar chart, is a type of chart typically used in technical analysis to illustrate movements in the price of a financial instrument over time. Each vertical line on the chart shows the price range (the highest and lowest prices) over one unit of time, e.g., one day or one hour. Tick marks project from each side of the line indicating th

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

Trading basics

Operational database

Operational database management systems (also referred to as OLTP databases or online transaction processing databases), are used to update data in real-time. These types of databases allow users to do more than simply view archived data. Operational databases allow you to modify that data (add, change or delete data), doing it in real-time. OLTP databases provide transactions as main ab

Finance

Optimal stopping

In mathematics, the theory of optimal stopping or early stopping is concerned with the problem of choosing a time to take a particular action, in order to maximise an expected reward or minimise an expected cost. Optimal stopping problems can be found in areas of statistics, economics, and mathematical finance (related to the pricing of American options). A key example of an optimal stop

Fiat currencies

Optimum currency area

In economics, an optimum currency area (OCA) or optimal currency region (OCR) is a geographical region in which it would maximize economic efficiency to have the entire region share a single currency.

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.

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 style

In finance, the style or family of an option is the class into which the option falls, usually defined by the dates on which the option may be exercised. The vast majority of options are either European or American (style) options. These options—as well as others where the payoff is calculated similarly—are referred to as "vanilla options". Options where the payoff is calculated differe

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.

Trading basics

Option-adjusted spread

Option-adjusted spread (OAS) is the yield spread which has to be added to a benchmark yield curve to discount a security's payments to match its market price, using a dynamic pricing model that accounts for embedded options. OAS is hence model-dependent. This concept can be applied to a mortgage-backed security (MBS), or another bond with embedded options, or any other interest rate deri

Finance

Options backdating

In finance, options backdating is the practice of altering the date a stock option was granted, to a usually earlier date (i.e backdating), but sometimes later date (i.e. forward dating), at which the underlying stock price was lower. This is a way of repricing options to make them more valuable when the option "strike price" (the fixed price at which the owner of the option can purchase

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.

Trading basics

ORCA (computer system)

ORCA was a mobile-optimized web application used as a component of the "get out the vote" (GOTV) efforts for Mitt Romney's 2012 presidential campaign. It was intended to enable volunteers in polling stations around the country to report which voters had turned out, so that "missing" Republican voters and underperforming precincts could be targeted for last-minute efforts to get voters to

Finance

Order (exchange)

An order is an instruction to buy or sell on a trading venue such as a stock market, bond market, commodity market, financial derivative market or cryptocurrency exchange. These instructions can be simple or complicated, and can be sent to either a broker or directly to a trading venue via direct market access. There are some standard instructions for such orders.

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.

Trading basics

Organic composition of capital

The organic composition of capital (OCC) is a concept developed by Karl Marx in his theory of capital, which was simultaneously his critique of political economy. It is derived from his more basic concepts of 'value composition of capital' and 'technical composition of capital'. Marx defines the organic composition of capital as "the value-composition of capital, in so far as it is deter

Trading basics

Organizational economics

Organizational economics (also referred to as economics of organization) involves the use of economic logic and methods to understand the existence, nature, design, and performance of organizations, especially managed ones.

Finance

Original sin (economics)

Original sin is a term in economics literature, proposed by Barry Eichengreen, Ricardo Hausmann, and Ugo Panizza in a series of papers to refer to a situation in which "most countries are not able to borrow abroad in their domestic currency."

Finance

Orphan structure

Orphan structure or Orphan SPV or orphaning are terms used in structured finance closely associated with creating SPVs ("Special Purpose Vehicles") for securitisation transactions where the notional equity of the SPV is deliberately handed over to an unconnected 3rd party who themselves have no control over the SPV; thus the SPV becomes an "orphan" whose equity is controlled by no one.

Finance

Ortigas Center

Ortigas Center (also known as the Ortigas Central Business District or Ortigas CBD) is a central business district located within the joint boundaries of Pasig, Mandaluyong, and Quezon City, within Metro Manila in the Philippines. With an area of more than 100 hectares (250 acres), it is Metro Manila's second most important business district after the Makati Central Business District. It

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.

Trading basics

Osaka Dojima Exchange

Osaka Dojima Exchange, Inc. (ODEX) is a Japanese corporation that operates a listed derivatives exchange that follows the tradition of the Osaka Dojima Rice Exchange of the Edo period. Formerly a "Mutually Owned Commodity Exchange" under the Commodity Futures Act, the company was reorganized as a joint stock company on April 1, 2021, and became a "Stock Company Operated Commodity Exchang

Banking

Otto.

Otto. (spelled with the period) is Finland's interbank network, connecting the ATMs of nearly every bank in the country. It is owned and operated by Automatia. They offer service in Finnish and Swedish, but also in English to holders of international ATM cards. The word "otto" means "withdrawal" in Finnish, and is also a relatively common German-derived given name. The withdrawal points

Trading basics

Ottoman public debt

The Ottoman public debt was a term which dated back to 24 August 1855, when the Ottoman Empire first entered into loan contracts with its European creditors shortly after the beginning of the Crimean War.

Trading basics

Ottoman Public Debt Administration

Ottoman Public Debt Administration (OPDA) was a European-controlled organization that was established in 1881 to collect the payments which the Ottoman Empire owed to European companies in the Ottoman public debt. The OPDA became a vast, essentially independent, bureaucracy within the Ottoman bureaucracy, run by the creditors: Its governing council included one representative each from B

Banking

Ouhoumoudou Mahamadou

Ouhoumoudou Mahamadou (born 1954) is a Nigerien politician of the Nigerien Party for Democracy and Socialism (PNDS-Tarayya) who served as Prime Minister of Niger between 3 April 2021 and 26 July 2023, when he was removed in a coup d'état.

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

Out-of-pocket expense

An out-of-pocket expense, or out-of-pocket cost (OOP), is the direct payment of money that may or may not be later reimbursed from a third-party source. For example, when operating a vehicle, gasoline, parking fees and tolls are considered out-of-pocket expenses for a trip. Car insurance, oil changes, and interest are not, since the outlay of cash covers expenses accrued over a longer pe

Trading basics

Outline of accounting

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

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:

Trading basics

Outline of marketing

Marketing refers to the social and managerial processes by which products, services, and value are exchanged in order to fulfill individuals' or groups' needs and wants. These processes include, but are not limited to, advertising, promotion, distribution, and product management. The following outline provides an overview and topical guide to the subject:

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