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The flash crash of May 6, 2010, , also known as the crash of 2:45 or simply the flash crash, was a United States trillion-dollar flash crash (a type of stock market crash) which started at 2:32 p.m. EDT and lasted for approximately 36 minutes.

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

In finance, an asset–liability mismatch occurs when the financial terms of an institution's assets and liabilities do not correspond. Several types of mismatches are possible. An asset-liability mismatch presents a material risk at institutions with significant debt exposure, such as banks or sovereign governments. A significant mismatch may lead to insolvency or illiquidity, which can c

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

Bills of credit are documents similar to banknotes issued by a government that represent a government's indebtedness to the holder. They are typically designed to circulate as currency or currency substitutes. Bills of credit are mentioned in Article One, Section 10, Clause One (also known as the Contract Clause) of the United States Constitution, where their issuance by state governme

A block trade is a high-volume transaction in a security that is privately negotiated and executed outside of the open market for that security. Major broker-dealers often provide "block trading" services—sometimes known as "upstairs trading desks"—to their institutional clients. In the United States and Canada a block trade is usually at least 10,000 shares of a stock or $100,000 of bo

In financial services, a broker-dealer is a natural person, company or other organization that engages in the business of trading securities for its own account or on behalf of its customers. Broker-dealers are at the heart of the securities and derivatives trading process.

The Buffett indicator (or the Buffett metric, or the Market capitalization-to-GDP ratio) is a valuation multiple used to assess how expensive or cheap the aggregate stock market is at a given point in time. It was proposed as a metric by investor Warren Buffett in 2001, who called it "probably the best single measure of where valuations stand at any given moment", and its modern form co

The Canadian Securities Administrators (CSA; French: Autorités canadiennes en valeurs mobilières, ACVM) is an umbrella organization of Canada's provincial and territorial securities regulators whose objective is to improve, coordinate, and harmonize regulation of the Canadian capital markets.

In finance, the capital asset pricing model (CAPM) is a model used to determine a theoretically appropriate required rate of return of an asset, to make decisions about adding assets to a well-diversified portfolio. The model takes into account the asset's sensitivity to non-diversifiable risk (also known as systematic risk or market risk), often represented by the quantity beta (β) in t

The China Foreign Exchange Trade System (CFETS; Chinese: 中國外匯交易中心), also known as National Interbank Funding Center (NIFC; Chinese: 全国银行间同业拆借中心), is a financial market infrastructure and electronic trading platform in China, established in 1994 in Shanghai under the People's Bank of China (PBC).

CLS Group (for Continuous Linked Settlement), or simply CLS, is a specialized financial market infrastructure group whose main entity is the New York–based CLS Bank. It started operations in 2002 and operates a unique and global central multicurrency cash settlement system, known as the CLS System, which plays a critical role in the foreign exchange market (also known as forex or FX). Al

Coin roll hunting (often abbreviated as CRH) is the hobby of searching and sorting coinage pulled from circulation for collectible coins. This is achieved through obtaining rolled coin, boxed coin, or bagged coin from banks and credit unions. A variant of this practice involves banknotes and is carried out in essentially the same fashion, normally to search for unusual (fancy) serial num

A coin wrapper, also known as a bank roll or simply a roll, is a paper or plastic container designed to hold a specific number of coins. During 19th century, newly minted coins were collected in cloth bags. Initially, coin wrapping was a manual process. Since the onset of the 20th century, coin wrapping machines have been in use. The earliest patent for a coin wrapping machine was in 190

A commodity currency is a currency that co-moves with the world prices of primary commodity products, due to these countries' heavy dependency on the export of certain raw materials for income. Commodity currencies are most prevalent in developing countries (eg. Burundi, Tanzania, Papua New Guinea). In the foreign exchange market, commodity currencies generally refer to the New Zealand d

In the United States secondary mortgage market, the Constant Maturity Mortgage (CMM) rate is a financial index representing the theoretical yield of a par value agency residential mortgage-backed security (agency RMBS). Unlike the constant-maturity treasury (CMT) which reflects government borrowing costs, the CMM reflects the yield required by investors to transact agency RMBS (such as t

Covered interest arbitrage is an arbitrage trading strategy whereby an investor capitalizes on the interest rate differential between two countries by using a forward contract to cover (eliminate exposure to) exchange rate risk. Using forward contracts enables arbitrageurs such as individual investors or banks to make use of the forward premium (or discount) to earn a riskless profit fro

Cross-listing (or multi-listing, or interlisting) of shares is when a firm lists its equity shares on one or more foreign stock exchange in addition to its domestic exchange. To be cross-listed, a company must thus comply with the requirements of all the stock exchanges in which it is listed, such as filing.

A crossing network is an alternative trading system (ATS) that matches buy and sell orders electronically for execution without first routing the order to an exchange or other public displayed market such as an electronic communication network (ECN). Such crossing networks are a type of dark pool that employ computerized systems to match buyers and sellers of large blocks of shares with

A currency is a standardized form of money used as a medium of exchange. Under this definition, the US dollar, the euro, the yen, sterling, and the renminbi are examples of (government-issued) fiat currencies. Currencies may act as stores of value and be traded between nations in foreign exchange markets, which determine the relative values of the different currencies.

A currency basket is a portfolio of selected currencies with different weightings. A currency basket is commonly used by investors to minimize the risk of currency fluctuations and also governments when setting the market value of a country's currency.

In public finance, a currency board is a mechanism by which a monetary authority is required to maintain a fixed exchange rate with a foreign currency by fully backing the commitment with foreign holdings, or reserves. This policy objective requires the conventional objectives of a central bank to be subordinated to the exchange rate target.

Currency manipulator is a designation applied by United States government authorities, such as the United States Department of the Treasury, to countries that engage in what is called "unfair currency practices" that give them a trade advantage. Such practices may be currency intervention or monetary policy in which a central bank buys or sells foreign currency in exchange for domestic c

A currency pair is the quotation of the relative value of a currency unit against the unit of another currency in the foreign exchange market. The currency that is used as the reference is called the counter currency, quote currency, or currency and the currency that is quoted in relation is called the base currency or transaction currency.

Currency substitution, also known as dollarization, is the use of a foreign currency in parallel to or instead of a domestic currency.

DAI is a US dollar-pegged stablecoin associated with the Maker system, later linked to the development of the Sky ecosystem. This article introduces its positioning, mechanism, usage verification, and common misconceptions.

In finance, a dark pool (also black pool) is a private forum (alternative trading system or ATS) for trading securities, derivatives, and other financial instruments. Liquidity on these markets is called dark pool liquidity. The bulk of dark pool trades represent large trades by financial institutions that are offered away from public exchanges like the New York Stock Exchange and the NA

Direct market access (DMA) in financial markets is the electronic trading infrastructure that gives investors wishing to trade in financial instruments a way to interact with the order book of an exchange. Normally, trading on the order book is restricted to broker-dealers and market making firms that are members of the exchange. Using DMA, investment companies (also known as buy side fi

The dividend yield of a share is the ratio of annualised cash dividends to the share's current market price. It is usually expressed as a percentage and is commonly calculated by dividing the annual dividend per share by the current share price.

Domestic liability dollarization (DLD) pertains to the denomination of banking system deposits and loaning in a currency other than that of the country in which they are held. DLD does not refer exclusively to denomination in US dollars, as DLD encompasses accounts denominated in internationally traded "hard" currencies such as the British pound sterling, the Swiss franc, the Japanese ye

Dupont analysis is a tool used in financial analysis, where return on equity (ROE) is separated into its component parts.

Dynamic currency conversion (DCC) or cardholder preferred currency (CPC) is a process whereby the amount of a credit card transaction is converted at the point of sale, ATM or internet to the currency of the card's country of issue. DCC is generally provided by third party operators in association with the merchant, and not by a card issuer. Card issuers permit DCC operators to offer DCC

Early American currency went through several stages of development during the colonial and post-Revolutionary history of the United States. John Hull was authorized by the Massachusetts legislature to make the earliest coinage of the colony (the willow, the oak, and the pine tree shilling) in 1652.

Earning yield is the quotient of earnings per share (E), divided by the share price (P), giving E/P. It is the reciprocal of the P/E ratio.

Electronic funds transfer at point of sale (EFTPOS; ) is a type of payment transaction in which electronic funds transfers (EFT) are processed at a point of sale (POS) system or payment terminal usually via payment methods such as payment cards (debit cards, credit cards or gift cards). EFTPOS technology was developed during the 1980s.

Electronic Payment Services (Chinese: 易辦事), commonly known as EPS, is an electronic payment system based in Hong Kong, Macau, and with limited acceptance in Shenzhen since it began operations in 1985. The service is provided by EPS Company (Hong Kong) Limited which currently has over 30,000 acceptance locations.

A eurobond is an international bond that is denominated in a currency not native to the country where it is issued. They are also called external bonds. They are usually categorised according to the currency in which they are issued: eurodollar, euroyen, euroeuro and so on. The name became somewhat misleading with the advent of the euro currency in 1999; eurobonds were created in the 19

Eurocurrency is currency held on deposit outside its home market, i.e., held in banks located outside of the country which issues the currency. For example, a deposit of US dollars held in a bank in London, would be considered eurocurrency, as the US dollar is deposited outside of its home market.

Eurodollars is a financial term used to describe certain U.S. dollar-denominated deposit liabilities (primarily but not exclusively time deposits) held at banks or their branches outside the United States.

An exchange, bourse (), trading exchange or trading venue is an organized market where people can buy and sell financial instruments, such as tradable securities, commodities, foreign exchange and derivative contracts.

An exchange rate regime is a way a monetary authority of a country or currency union manages the currency about other currencies and the foreign exchange market. It is closely related to monetary policy and the two are generally dependent on many of the same factors, such as economic scale and openness, inflation rate, the elasticity of the labor market, financial market development, and

In macroeconomics, a flexible exchange-rate system is a monetary system that allows the exchange rate to be determined by supply and demand.

The term exorbitant privilege refers to the benefits that the United States, as the world's supplier of safe assets, derives from its own currency (the US dollar) being the international reserve currency. These safe assets, primarily government debt, tend to be sold at higher prices than the debt of other governments. Exorbitant privilege enables the United States (and other states in a

The Financial Information eXchange (FIX) protocol is an electronic communications protocol initiated in 1992 for international real-time exchange of information related to securities transactions and markets. With trillions of dollars traded annually on the NASDAQ alone, financial service entities are employing direct market access (DMA) to increase their speed to financial markets. Mana

Financial innovation is the act of creating new financial instruments as well as new financial technologies, institutions, and markets. Recent financial innovations include hedge funds, private equity, weather derivatives, retail-structured products, exchange-traded funds, multi-family offices, and Islamic bonds (Sukuk). The shadow banking system has spawned an array of financial innovat

The industry which has a range of businesses that deal with money like banks, insurance companies, accounting companies, finance companies, taxation, investment funds, credit companies, and few government enterprises is called the finance industry. The activities or services within this industry that cater to the economy of the country are called financial services. Therefore, the econom

A financial transaction is an agreement, or communication, between a buyer and seller to exchange goods, services, or assets for payment. Any transaction involves a change in the status of the finances of two or more businesses or individuals. A financial transaction always involves one or more financial asset, most commonly money or another valuable item such as gold or silver.

Financialization (or financialisation in British English) is a term sometimes used to describe the development of financial capitalism during the period from 1980 to the present, in which debt-to-equity ratios increased and financial services accounted for an increasing share of national income relative to other sectors.

A fixed exchange rate, often called a pegged exchange rate or pegging, is a type of exchange rate regime in which a currency's value is fixed, or pegged, by a monetary authority against the value of another currency, a basket of other currencies, or another measure of value, such as gold or silver.

In modern finance, a flash crash is a very rapid, deep, and volatile fall in security prices occurring within a very short time period followed by a quick recovery. Flash crashes are frequently blamed by media on trades executed by black-box trading, combined with high-frequency trading, whose speed and interconnectedness can result in the loss and recovery of billions of dollars in a ma

A flight-to-quality, or flight-to-safety, is a financial market phenomenon occurring when investors sell what they perceive to be higher-risk investments and purchase safer investments, such as gold and government bonds. This is considered a sign of fear in the marketplace, as investors seek less risk in exchange for lower profits.

In macroeconomics and economic policy, a floating exchange rate (also known as a fluctuating or flexible exchange rate) is a type of exchange rate regime in which a currency's value is allowed to fluctuate in response to international events affecting exchange rates. A currency that uses a floating exchange rate is known as a floating currency. In contrast, a fixed currency is one where

A floor trader is a member of a stock or commodities exchange who trades on the floor of that exchange for their own account. The floor trader must abide by trading rules similar to those of the exchange specialists who trade on behalf of others. The term should not be confused with floor broker.

A foreign exchange hedge (also called a FOREX hedge) is a method used by companies to eliminate or "hedge" their foreign exchange risk resulting from transactions in foreign currencies (see foreign exchange derivative). This is done using either the cash flow hedge or the fair value method. The accounting rules for this are addressed by both the International Financial Reporting Standard

The foreign exchange market (forex, FX, or currency market) is a global decentralized or over-the-counter (OTC) market for the trading of currencies. This market determines foreign exchange rates for every currency. By trading volume, it is by far the largest market in the world, followed by the credit market.

A foreign exchange spot transaction (FX spot) is an agreement between two parties to buy one currency against selling another currency at an agreed price for settlement on the spot date. The exchange rate at which the transaction is done is called the spot exchange rate. As of 2010, the average daily turnover of global FX spot transactions reached nearly US$1.5 trillion, counting 37.4% o

The forward exchange rate (also sometimes referred to as forward rate or forward price) is the exchange rate at which two counterparties (such as a bank and an investor) agree to exchange one currency for another at a future date when they enter into a forward contract. Multinational corporations, banks, and other financial institutions enter into forward contracts to take advantage of t

Freedom Holding Corp. is an American investment conglomerate headquartered in Almaty, Kazakhstan. Founded in 2008 by Timur Turlov in the United States, the company provides a range of services in retail financial securities brokerage and trading, asset management, capital markets, investment research and counseling, investment banking and underwriting services, mortgages, insurance, bank

Fundamental analysis, in accounting and finance, is the analysis of a business's financial statements (usually to analyze the business's assets, liabilities, and earnings); health; competitors and markets. It also considers the overall state of the economy and factors including interest rates, production, earnings, employment, GDP, housing, manufacturing and management. There are two bas

A gift card, also known as a gift certificate in North America, or gift voucher or gift token in the UK, is a prepaid stored-value money card, usually issued by a retailer or bank, to be used as an alternative to cash for purchases within a particular store or related businesses. Gift cards are also given out by employers or organizations as rewards or gifts. They may also be distributed

The gold bloc were seven countries led by France that stuck to the gold standard monetary policy during the Great Depression, even though many other countries abandoned it. In addition to France, the gold bloc included Belgium, Luxembourg, the Netherlands, Italy, Poland, and Switzerland.

Gold repatriation is the process by which governments and central banks relocate sovereign gold reserves from foreign vaults back to domestic storage. Historically driven by bilateral trade reallocations or immediate security concerns, modern gold repatriation has evolved into an accelerating global trend. According to annual surveys by the World Gold Council, the proportion of central b

GreenSky, LLC is an American financial technology company. Founded in 2006 and based in Atlanta, Georgia, it provides technology to banks and merchants to provide loans in the home improvement, solar, and healthcare sectors.

In macroeconomics, hard currency, sound money, safe-haven currency, or strong currency is any globally traded currency that serves as a reliable and stable store of value. Factors contributing to a currency's hard status might include its historical use as a money (such as gold or silver), or if it is a fiat currency, the stability and reliability of the respective state's legal and bure

Hawala or hewala (Arabic: حِوالة, romanized: Ḥawāla, lit. 'transfer, trust'), originating in India as havālā (Hindi: हवाला) or huṇḍī (Hindi: हुण्डी, romanized: Huṇḍī, Sanskrit: हुण्डिका, romanized: Huṇḍikā, lit. 'bill of exchange, draft, or promissory note'), also known as ḥavâleh in Persian, and xawala or xawilaad in Somali, is a popular and informal value transfer system based on the p

In economics, hot money is the flow of funds (or capital) from one country to another in order to earn a short-term profit on interest rate differences and/or anticipated exchange rate shifts. These speculative capital flows are called "hot money" because they can move very quickly in and out of markets, potentially leading to market instability.

Instant payment (sometimes referred to as real-time payment or faster payment) is a method of electronic funds transfer, allowing for almost immediate transfer of money between bank accounts. This was in contrast to the previous transfer times of one to three business days that had been in place until the mid-2010s.

Interac e-Transfer (formerly Interac Email Money Transfer or EMT) is a Canadian funds transfer service between personal and business accounts in participating Canadian banks and other financial institutions, offered through Interac Corporation.

The interbank lending market is a market in which banks lend funds to one another for a specified term. Most interbank loans are for maturities of one week or less, the majority being overnight. Such loans are made at the interbank rate (also called the overnight rate if the term of the loan is overnight). A sharp decline in transaction volume in this market was a major contributing fac

An interest rate future is a futures contract (a financial derivative) with an interest-bearing instrument as the underlying asset. It is a particular type of interest rate derivative. Examples include Treasury-bill futures, Treasury-bond futures and Eurodollar futures.

An interest-free economy or interest free economy is an economy that does not have pure interest rates.

An international monetary system is a set of internationally agreed rules, conventions and supporting institutions that facilitate international trade, cross border investment and generally the reallocation of capital between states that have different currencies. It should provide means of payment acceptable to buyers and sellers of different nationalities, including deferred payment. T

Since the late 2000s, the People's Republic of China (PRC) has sought to internationalize its official currency, the renminbi (RMB) or Chinese yuan (CNY). This initiative aims to reduce dependence on the United States dollar and enhance China's influence in the global financial system. Key strategies have included promoting the use of the yuan in international trade invoicing, cross-bord

In finance, Jensen's alpha (or Jensen's Performance Index, ex-post alpha) is used to determine the abnormal return of a security or portfolio of securities over the theoretical expected return. It is a version of the standard alpha based on a theoretical performance instead of a market index.

Liberty Reserve was a Costa Rica-based centralized digital currency service that billed itself as the "oldest, safest and most popular payment processor, serving millions all around a world". Liberty Reserve was conceived as a "PayPal for the unbanked," allowing the 2.5 billion people without bank accounts or credit histories to participate in the modern economy. The site had over one mi

The London Inter-Bank Offered Rate (Libor LY-bor) was an interest rate average calculated from estimates submitted by the leading banks in London. Each bank estimated what it would be charged were it to borrow from other banks. It was the primary benchmark, along with the Euribor, for short-term interest rates around the world. Libor was phased out at the end of 2021, with market partic

A linked exchange rate system is a type of exchange rate regime that pegs the exchange rate of one currency to another. It is the exchange rate system implemented in Hong Kong to stabilise the exchange rate between the Hong Kong dollar (HKD) and the United States dollar (USD). The Macao pataca (MOP) is similarly linked to the Hong Kong dollar.

This is a table of notable American exchange-traded funds, or ETFs. As of 2020, the number of exchange-traded funds worldwide was over 7,600, representing about 7.74 trillion U.S. dollars in assets. The largest ETF, as of April 2021, was the SPDR S&P 500 ETF Trust (NYSE Arca: SPY), with about $353.4 billion in assets. The second-largest was the iShares Core S&P 500 ETF with around $270.

This is a list of countries and territories by their exchange rate regime.

Foreign exchange reserves, also called Forex reserves, in a strict sense, are foreign-currency deposits held by nationals and monetary authorities. However, in popular usage and in the list below, it also includes gold reserves, special drawing rights (SDRs), and IMF reserve positions because this total figure (more accurately called "official reserves", "international reserves", or "off

In corporate finance, a listing refers to the company's shares being on the list (or board) of stock that are publicly listed. Some stock exchanges allow shares of a foreign company to be listed and may allow dual listing, subject to conditions.

The Louvre Accord (formally, the Statement of the G6 Finance Ministers and Central Bank Governors) was an agreement, signed on February 22, 1987, in Paris, that aimed to stabilize international currency markets and halt the continued decline of the US dollar after 1985 following the Plaza Accord. It was considered, from a relational international contract viewpoint, as a rational comprom

A market anomaly in a financial market is predictability that seems to be inconsistent with (typically risk-based) theories of asset prices. Standard theories include the capital asset pricing model and the Fama-French Three Factor Model, but a lack of agreement among academics about the proper theory leads many to refer to anomalies without a reference to a benchmark theory (Daniel and

In finance, market depth is a real-time list displaying the quantity to be sold versus unit price. The list is organized by price level and is reflective of real-time market activity. Mathematically, it is the size of an order needed to move the market price by a given amount. If the market is deep, a large order is needed to change the price.

A market maker or liquidity provider is a company or individual that quotes both a buy and a sell price in a tradable asset held in inventory, hoping to make a profit on the difference, which is called the bid–ask spread or turn. This stabilizes the market, reducing price variation (volatility) by setting a trading price range for the asset.

Midpoint (Midpoint Holdings Ltd) is a UK headquartered, Toronto and Frankfurt listed company providing international payments and peer-to-peer foreign exchange (bureau de change) services to individual and corporate customers. Midpoint is the world’s first dedicated peer-to-peer international foreign currency matching platform. The company's patented matching technology was the first app

Military payment certificates, or MPC, was a form of currency used to pay United States (US) military personnel in certain foreign countries in the mid and late twentieth century. They were used in one area or another from a few months after the end of World War II until a few months after the end of U.S. participation in the Vietnam War – from 1946 until 1973. The certificates were made

The Ministry of Finance is a Ministry in the Government of Trinidad and Tobago. The head of the ministry is the Minister of Finance and is appointed by the President of Trinidad and Tobago on the advice of the Prime Minister. The incumbent, Davendranath Tancoo was appointed on May 3, 2025, He replaced Vishnu Dhanpaul. The Minister in the Ministry of Finance is Senator Kennedy Swaratsing

Monetary hegemony is an economic and political concept in which a single state has decisive influence over the functions of the international monetary system. A monetary hegemon would need:

Monetary reform refers to proposals to change a country's monetary system, including how money is created, regulated, and distributed. Such reforms seek to address perceived problems with current monetary schemes, like financial instability, wealth inequality, or inflation. Monetary reform movements grow during economic crises, proposing alternatives to prevailing systems.

In the mortgage industry of the United States, mortgage servicing rights (MSR) are the contractual rights to service a mortgage after the mortgage origination process is complete. Mortgage servicing is the management of the repayment of mortgage debt on behalf of the lender, including the collection and recording of mortgage payments. The legal entity that holds the mortgage servicing ri

Net capital outflow (NCO) is the net flow of funds being invested abroad by a country during a certain period of time (usually a year). A positive NCO means that the country invests outside more than the world invests in it. NCO is one of two major ways of characterizing the nature of a country's financial and economic interaction with the other parts of the world (the other being the ba

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).

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

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.

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.

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.

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."