Industry WIKI

Revolving credit is a type of credit that does not have a fixed number of payments, in contrast to installment credit. Credit cards are an example of revolving credit used by consumers. Corporate revolving credit facilities are typically used to provide liquidity for a company's day-to-day operations. They were first introduced by the Strawbridge and Clothier Department Store.

Revue Starlight (少女☆歌劇 レヴュースタァライト, Shōjo Kageki Revyū Sutāraito; lit. Girls' Musical Revue Starlight) is a Japanese media franchise created in 2017 by Bushiroad, Nelke Planning and Kinema Citrus. It primarily consists of a series of musicals, debuting between 22 and 24 September 2017 at the AiiA 2.5 Theater Tokyo; a 12-episode anime television series directed by Tomohiro Furukawa which a

The Rhode Island banking crisis took place in the early 1990s, when approximately a third of the U.S. state of Rhode Island's population lost access to funds in their bank accounts. The events were triggered by the failure of a Providence bank, Heritage Loan & Investment, due to long-term embezzlement by its president. News of its problems led to a bank run in which customers tried to wi

Ria Money Transfer (Ria) is an American financial services company which specializes in customer-to-customer international money transfers. It is a subsidiary of Euronet Worldwide, Inc. (NASDAQ: EEFT) and operates as part of its Cross-Border payments segment.

Riba (Arabic: ربا ,الربا، الربٰوة, ribā or al-ribā, IPA: [ˈrɪbæː]) is an Arabic word used in Islamic law and roughly translated as "usury": unjust, exploitative gains made in trade or business (especially banking). Riba is mentioned and condemned in several different verses in the Qur'an (3:130, 4:161, 30:39, and the commonly referenced 2:275-2:280). It is also mentioned in many hadith (

Ricardo Cortez (born Jacob Krantz or Kranze; September 19, 1900 – April 28, 1977) was an American actor and film director. He was a matinée idol during the silent era, and later specialized in playing "heavies".

Ricardo Jorge Caballero (born 20 October 1959) is a Chilean macroeconomist who is the Ford International Professor of Economics at the Massachusetts Institute of Technology. He also served as the Chairman of MIT's Economics Department from 2008 to 2011. He is a director of the World Economic Laboratory at MIT and an NBER Research Associate. Caballero received his PhD from MIT in 1988, a

Rice brokers, which rose to power and significance in Osaka and Edo in the Edo period (1603-1867) of Japanese history, were the forerunners to Japan's banking system. The concept originally arose in Kyoto several hundred years earlier; the early rice brokers of Kyoto, however, operated somewhat differently, and were ultimately not nearly as powerful or economically influential as the lat

Rich Dad Poor Dad: What the Rich Teach Their Kids About Money That the Poor and Middle Class Do Not! is a 1997 book written by Robert Kiyosaki and Sharon Lechter. It advocates the importance of financial literacy (financial education), financial independence and building wealth through investing in assets, real estate investing, starting and owning businesses, as well as increasing one's

Richard Bookstaber (born 1950) is an American financial risk manager and author of A Demon Of Our Own Design, a book highlighting the fragility of the financial system that occurs from tight coupling and complexity. The book is noted for its foreshadowing of the 2008 financial crisis. He is also the author of The End of Theory, which critiques the applicability of economics in dealing

Richard Charles Blum (July 31, 1935 – February 27, 2022) was an American investor and the husband of United States Senator Dianne Feinstein. He was the chairman and president of Blum Capital, an equity investment management firm. Blum was on the boards of directors of several companies, including CB Richard Ellis, where until May 2009 he served as the chairman of that board. He was a reg

Richard J. Dennis, a commodities speculator once known as the "Prince of the Pit," was born in Chicago, in January, 1949. In the early 1970s, he borrowed $1,600 and reportedly made $350 million. When a futures trading fund under his management incurred significant losses in the stock market crash of 1987 he retired from trading for several years. He has been active in Democratic and Lib

Richard Davoud Donchian (September 1905 – April 24, 1993) was an American commodities and futures trader, and a pioneer in the field of managed futures.

Richard Herman Driehaus (; July 28, 1942 – March 9, 2021) was an American businessman, investor, and philanthropist. He was the founder, chief investment officer, and chairman of the hedge fund Driehaus Capital Management LLC, based in Chicago.

Richard Eduard Koch, known as von Koch from 1908 onward (born 15 September 1834 in Cottbus; died 15 October 1910 in Berlin), was a German jurist and judge and served as president of the Reichsbank from 1890 to 1908.

Richard Ong Tiong Sin (born 1965) is a Malaysian businessman and investor. He is the founder, chairman, and CEO of RRJ Capital, one of the largest private equity funds based in Asia. Richard was also a founder and CEO of Hopu Investment Management, a Beijing-based private equity fund.

Richard Socarides is an American lawyer and businessman.

Riddell Sports Group, commonly known as Riddell ( rə-DEL), is an American company specializing in sports equipment for Gridiron football. Founded in 1929 by John Tate Riddell, it was headquartered in Rosemont, Illinois, but in 2017, the company relocated to a new facility in Des Plaines, Illinois.

Rideshare advertising is a form of digital, out-of-home advertising that uses in-car advertisements in ridesharing vehicles.

The RioCard (Bilhete Único) is a smartcard system used in the transport system of Rio de Janeiro state, Brazil. The card is contactless and uses MIFARE technology. It is a form of electronic payment produced and distributed by the Fetranspor company, in cooperation with Itaú bank. Its installation was seen as strengthening Brazil's connection with the Open Standard for Public Transport

Risk arbitrage, also known as merger arbitrage, is an investment strategy that speculates on the successful completion of mergers and acquisitions. An investor that employs this strategy is known as an arbitrageur. Risk arbitrage is a type of event-driven investing in that it attempts to exploit pricing inefficiencies caused by a corporate event.

In financial mathematics, a risk measure assigns a numerical value to the risk associated with a financial position or portfolio. In financial management and insurance, risk measures are often used to determine capital reserve requirements to mitigate downside risk to make it acceptable to regulators. In recent years attention has turned to convex and coherent risk measurement.

Risk of ruin is a concept in gambling, insurance, and finance relating to the likelihood of losing all one's investment capital or extinguishing one's bankroll below the minimum for further play. For instance, if someone bets all their money on a simple coin toss, the risk of ruin is 50%. In a multiple-bet scenario, risk of ruin accumulates with the number of bets: each play increases th

Risk parity (or risk premia parity) is an approach to investment management which focuses on allocation of risk, usually defined as volatility, rather than allocation of capital. The risk parity approach asserts that when asset allocations are adjusted (leveraged or deleveraged) to the same risk level, the risk parity portfolio can achieve a higher Sharpe ratio and can be more resistant

A risk pool is a form of risk management that is mostly practiced by insurance companies, which come together to form a pool to provide protection to insurance companies against catastrophic risks such as floods or earthquakes. The term is also used to describe the pooling of similar risks within the concept of insurance. It is basically like multiple insurance companies coming together

A risk premium is a measure of excess return that is required by an individual to compensate being subjected to an increased level of risk. It is used widely in finance and economics, the general definition being the expected risky return less the risk-free return, as demonstrated by the formula below.

In finance, risk reversal (also known as a conversion when an investment strategy) can refer to a measure of the volatility skew or to a trading strategy.

Risk-adjusted return on capital (RAROC) is a risk-based profitability measurement framework for analysing risk-adjusted financial performance and providing a consistent view of profitability across businesses. The concept was developed by Bankers Trust and principal designer Dan Borge in the late 1970s. Note, however, that increasingly return on risk-adjusted capital (RORAC) is used as a

A risk-free bond is a theoretical bond that repays interest and principal with absolute certainty. The rate of return would be the risk-free interest rate. It is primary security, which pays off 1 unit no matter state of economy is realized at time

The risk-free rate of return, usually shortened to the risk-free rate, is the rate of return of a hypothetical investment with scheduled payments over a fixed period of time that is assumed to meet all payment obligations.

In mathematical finance, a risk-neutral measure (also called an equilibrium measure, or equivalent martingale measure) is a probability measure such that each share price is exactly equal to the discounted expectation of the share price under this measure.

In economics, finance, and psychology, risk-seeking (also called risk-loving or risk preference) refers to a behavioral tendency to prefer uncertain options with potentially higher rewards over safer alternatives with lower expected value. Risk-seeking individuals derive greater satisfaction or perceived utility from taking chances, even when the probable outcome may be less favorable. W

The risk–return spectrum (also called the risk–return tradeoff or risk–reward) is the relationship between the amount of return gained on an investment and the amount of risk undertaken in that investment. The more return sought, the more risk that must be undertaken.

The RiskMetrics variance model (also known as exponential smoother) was first established in 1989, when Sir Dennis Weatherstone, the new chairman of J.P. Morgan, asked for a daily report measuring and explaining the risks of his firm. Nearly four years later in 1992, J.P. Morgan launched the RiskMetrics methodology to the marketplace, making the substantive research and analysis that sat

Rita’s Italian Ice & Frozen Custard (originally and now informally known as Rita's Water Ice) is a privately owned and operated American quick service restaurant chain originating in the Philadelphia metropolitan area that expanded into 30 states, mostly in the Mid-Atlantic region. The chain is known for its Italian ice, or water ice, and frozen custard but also offers multiple other typ

The Rivers State Internal Revenue Service (RIRS) was formed in 1993 under the Board of Internal Revenue Law 1993 (No. 3). It is a government agency entrusted to assess, collect and account for all taxes, fees and levies in Rivers State, Nigeria. It is involved in the formulation of tax policy as well as the supervision of revenue collection due to the state. Its headquarters is at Plot

Rmetrics is a free and open-source software project designed for teaching computational finance. Rmetrics is based primarily on the statistical R programming language, but does contain contributions in other programming languages, such as Fortran, C, and C++. The project was started in 2001 by Diethelm Wuertz, based at the Swiss Federal Institute of Technology in Zurich.

The Roaring Twenties, sometimes stylized as Roaring '20s, refers to the 1920s decade in music and fashion, as it happened in Western society and Western culture. It was a period of economic prosperity with a distinctive cultural edge in the United States and internationally, particularly in major cities such as Berlin, Buenos Aires, Santiago, Chicago, London, Los Angeles, Mexico City, Ne

Rob Minter is a fictional character from the BBC soap opera EastEnders, played by Stuart Laing. He made his first appearance on 21 June 2006. Of his new role, Stuart said: "I am really excited about joining EastEnders and am thrilled to be working with the cast – I can’t wait to get stuck in." It was announced on 15 June 2007 he would leave the show at the end of his current storyline. L

Robertus "Rob" Thielen (born 1961) is a Dutch businessman and investor, working primarily in Europe. He is the chairman and founder of Waterland Private Equity, a co-founding partner of the Russia-based private equity group Elbrus Capital, and the chairman of the Gryphion family office.

Robert Alan Jarrow is the Ronald P. and Susan E. Lynch Professor of Investment Management at the Cornell Johnson Graduate School of Management. Professor Jarrow is a co-creator of the Heath–Jarrow–Morton framework for pricing interest rate derivatives, a co-creator of the reduced form Jarrow–Turnbull credit risk models employed for pricing credit derivatives, and the creator of the forw

Robert Bernard Anderson (June 4, 1910 – August 14, 1989) was an American administrator, politician, and businessman. He served as the Secretary of the Navy between February 1953 and March 1954. He also served as the Secretary of the Treasury from 1957 until 1961, and was one of President Dwight Eisenhower's closest confidants.

Robert B. "Bob" Willumstad is a former chairman and CEO of the American International Group (AIG).

Michael Robert Hamilton Holmes à Court (27 July 1937 – 2 September 1990) was a South African-born Australian businessman who became Australia's first billionaire. He died suddenly of heart failure in 1990 at the age of 53.

Robert Michael Fomon (January 3, 1925 – May 31, 2000) was an American financier who was Chairman and Chief Executive Officer of E. F. Hutton & Co. from 1970 to 1987, a governor of the New York Stock Exchange, and Chairman of the Board of Governors of the Pacific Stock Exchange.

Robert Morris Jr. (January 20, 1734 – May 8, 1806) was a British-born American merchant, investor, and politician, and one of the Founding Fathers of the United States. Morris served in the Pennsylvania legislature, the Second Continental Congress, and the United States Senate. He was one of only two individuals (along with Roger Sherman) to sign the Declaration of Independence, the Arti

Robert Alexander Mundell (October 24, 1932 – April 4, 2021) was a Canadian economist who was a professor of economics at Columbia University, McGill University, and the Chinese University of Hong Kong. He received the Nobel Memorial Prize in Economic Sciences in 1999 for his pioneering work in monetary dynamics and optimum currency areas.

Robert Harry Mundheim BVO (born February 24, 1933) is an American legal scholar. He is the former Dean of the University of Pennsylvania Law School, General Counsel of the U.S. Treasury Department, Co-Chairman of the law firm Fried, Frank, Harris, Shriver & Jacobson, General Counsel of Salomon, Inc., and Fred Carr Professor of Law and Financial Institutions at the University of Pennsylva

Robert Wayne Clower (February 13, 1926 – May 2, 2011) was an American economist. He is credited with having largely created the field of stock-flow analysis in economics and with seminal works on the microfoundations of monetary theory and macroeconomics.

Roberta Sarah Karmel (née Segal; May 4, 1937 – March 23, 2024) was an American attorney and the Centennial Professor of Law, and Co-Director of the Center for the Study of International Business Law, at Brooklyn Law School. She was the first female Commissioner of the Securities and Exchange Commission.

The Robin Hood effect is an economic occurrence where income is redistributed so that economic inequality is reduced. That is a redistribution of economic resources due to which the economically disadvantaged gain at the expense of the economically advantaged. The effect is named after the English folkloric figure Robin Hood, who is said to have stolen from the rich to give to the poor.

The Robin Hood tax is a package of financial transaction taxes (FTT) proposed by a campaigning group of civil society non-governmental organizations (NGOs). Campaigners have suggested the tax could be implemented globally, regionally, or unilaterally by individual nations. Conceptually similar to the Tobin tax (which was proposed for foreign currency exchange only), it would affect a wid

The Roblox Corporation ( , ROH-bloks) is an American video game developer based in San Mateo, California. Founded in 2004 by David Baszucki and Erik Cassel, the company is the developer of Roblox, a game platform, which was released in 2006. As of December 31, 2024, the company employs over 2,400 people.

Robo-advisors or robo-advisers are financial advisers that provide personalized financial advice and investment management online with moderate to minimal human intervention. A robo-advisor provides digital financial advice that is personalised based on mathematical rules or algorithms. These algorithms are designed by human financial advisors, investment managers and data scientists, an

The Rochdale Principles are a set of ideals for the operation of cooperatives. They were first set out in 1844 by the Rochdale Society of Equitable Pioneers in Rochdale, England, and have formed the basis for the principles on which co-operatives around the world continue to operate. The implications of the Rochdale Principles are a focus of study in co-operative economics. The original

Rock, Rock, Rock! is a 1956 musical drama film conceived, co-written and co-produced by Milton Subotsky and directed by Will Price. The film is an early jukebox musical featuring performances by established rock and roll singers of the era, including Chuck Berry, LaVern Baker, Teddy Randazzo, the Moonglows, the Flamingos, and the Teenagers with Frankie Lymon as lead singer. Later West S

Rodger Russell Krouse (born 1961) is an American businessperson who co-founded Sun Capital Partners, Inc., an American investment firm based in Boca Raton, Florida, United States.

Roger Charles Altman (born April 2, 1946) is an American investment banker, the founder and senior chairman of Evercore, and a former Democratic politician. He served as

Roger McNamee (born May 2, 1956) is an American businessman, investor, venture capitalist and musician. He is the founding partner of the venture capital firm Elevation Partners. Prior to co-founding the firm, McNamee co-founded private equity firm Silver Lake Partners and headed the T. Rowe Price Science and Technology Fund.

The Rogers International Commodity Index (RICI) is a broad index of commodity futures designed by Jim Rogers in 1996/1997. The first fund tracking the index began on July 31, 1998.

Rokomari.com (Bengali: রকমারি.কম) is a Bangladeshi e-commerce site. It officially launched on 19 January 2012. Initially, the website sold only physical books, but now sells ebooks and a variety of items from sporting goods to Stationery.

A rollup (also "roll-up" or "roll up") is a process used by investors (commonly private equity firms) where multiple small companies in the same market are acquired and merged.

The practices of ancient Roman finance, while originally rooted in Greek models, evolved in the second century BC with the expansion of Roman monetization. Roman elites engaged in private lending for various purposes, and various banking models arose to serve different lending needs.

Ronald Alfred Brierley (born 2 August 1937) is a New Zealand investor and corporate raider, chairman and director of a number of companies in Australia, New Zealand and the UK.

Ron Huberman (born November 26, 1971) is an American entrepreneur and current CEO/Co-Founder of Benchmark Analytics, a provider of an evidenced-based public safety management system, featuring early warning and intervention analytics software for law enforcement agencies throughout the U.S. He spent 16 years in Chicago city government, with the first nine years in the Chicago Police Depa

Sir Ronald Mourad Cohen (born 1 August 1945) is an Egyptian-born British businessman and political figure. He is the chairman of The Portland Trust and Bridges Ventures. He has been described as "the father of British venture capital" and "the father of social investment".

Ronald Owen Perelman (; born January 1, 1943) is an American banker, businessman, investor, and philanthropist. MacAndrews & Forbes Incorporated, his company, has invested in companies with interests in groceries, cigars, licorice, makeup, cars, photography, television, camping supplies, security, gaming, jewelry, banks, and comic book publishing. Perelman holds significant shares in com

Root Cause Analysis Solver Engine (informally RCASE) is a proprietary algorithm developed from research originally at the Warwick Manufacturing Group (WMG) at Warwick University. RCASE development commenced in 2003 to provide an automated version of root cause analysis, the method of problem solving that tries to identify the root causes of faults or problems. RCASE is now owned by the s

The Rosario Board of Trade (Spanish: Bolsa de Comercio de Rosario, BCR) is a non-profit making association based in Rosario, in the Province of Santa Fe, Argentina. Founded on August 18, 1884, it serves as a forum for the conduct of trade negotiations in several markets including grain, oilseed, agricultural products and their by-products, as well as securities and other assets.

Rosetta Stone Language Learning is proprietary, computer-assisted language learning (CALL) software published by Rosetta Stone Inc, part of the IXL Learning family of products. The software uses images, text, and sound to teach words and grammar by spaced repetition, without translation. Rosetta Stone calls its approach Dynamic Immersion.

The Federal Financial Monitoring Service of the Russian Federation (Russian: Федеральная служба по финансовому мониторингу), known as Rosfinmonitoring (Росфинмониторинг), is a Federal Service that was created by a decree of President Vladimir Putin of 1 November 2001, and aimed to collect and analyze information about financial transactions in order to combat domestic and international m

Roshan Digital Account (RDA) (Urdu روشن ڈیجیٹل اکاؤنٹ) is a facility available to non-resident Pakistanis, this facility allows Pakistani nationals living abroad to have access to banking services within Pakistan without having to visit a consulate, embassy, or a physical bank branch.

Rosland Capital is an American precious metal asset management firm that in July 2026 filed for Chapter 11 bankruptcy protection. Its business model had the company selling gold and other precious metals in physical form as well as part of an IRA investment. Its employees were terminated in June 2026.

Ross Levine (born April 16, 1960) is an American economist who currently holds the Willis H. Booth Chair in Banking and Finance at the University of California at Berkeley. He is also a senior fellow at the Milken Institute, a member of the Council on Foreign Relations, and an advisor to the World Economic Forum. As of 2018, he is the 12th most cited economist in the world.

A rotating savings and credit association (ROSCA) is a group of individuals who agree to meet for a defined period in order to save and borrow together, a form of combined peer-to-peer banking and peer-to-peer lending. Members all chip in regularly and take turns withdrawing accumulated sums.

The Rothschild banking family of Austria (Austrian German: Rothschild Bankiersfamilie) was the Austrian branch of the Rothschild family. It was founded in 1820 by Salomon Mayer von Rothschild in Vienna, which was then part of the Austrian Empire.

The Rothschild family (Hebrew: משפחת רוטשילד) is a wealthy Ashkenazi Jewish noble banking family originally from Frankfurt, Germany. The family's documented history starts in 16th-century Frankfurt; its name is derived from the family house, Rothschild, built by Isaak Elchanan Bacharach in Frankfurt in 1567. The family rose to prominence with Mayer Amschel Rothschild (1744–1812), a court

Rothschild loans to the Holy See refers to a series of major financial loans arranged between the Rothschild family and the Holy See of the Catholic Church. The first loan, which occurred in 1832, took place in the aftermath of the Napoleonic Wars during the pontificate of Pope Gregory XVI (involving James Mayer de Rothschild and Carl Mayer von Rothschild). This loan agreed on was for a

Roti (stylized as rōti) and formerly known as Roti Restaurants, Inc., Rōti Modern Mediterranean and Rōti Mediterranean Grill, is an American fast casual restaurant serving Mediterranean cuisine. The firm was founded in 2007, and at its peak prior to the COVID-19 pandemic it had 42 locations in Chicago, Minneapolis, Dallas, Houston, New York City, and Washington, D.C. It filed for bankrup

Rotkiske v. Klemm, 589 U.S. 8 (2019), was a decision by the Supreme Court of the United States involving the statute of limitations under the Fair Debt Collection Practices Act of 1977. The Court ruled that the statute of limitations begins one year after the alleged FDCPA violation took place, not one year after the violation was discovered by the plaintiff. This ruling affirmed a decis

The Rougga Treasure is a treasure dating back to the 7th century, discovered in Rougga, Tunisia, in 1972. Consisting of a collection of Roman gold coins, it is preserved in the Mahdia Museum.

A routing number is the term for bank codes in Canada. Routing numbers consist of eight numerical digits with a dash between the fifth and sixth digit for paper financial documents encoded with magnetic ink character recognition and nine numerical digits without dashes for electronic funds transfers. Routing numbers are regulated by Payments Canada, formerly known as the Canadian Payment

In the United States, an ABA routing transit number (ABA RTN) is a nine-digit code printed on the bottom of checks to identify the financial institution on which it was drawn. The American Bankers Association (ABA) developed the system in 1910 to facilitate the sorting, bundling, and delivering of paper checks to the drawer's (check writer's) bank for debit to the drawer's account.

Roy Gary Niederhoffer (born 1966) is an American hedge fund manager. He graduated from Harvard College magna cum laude in 1987, with a BA in computational neuroscience.

The Royal Bank of Canada (RBC; French: Banque Royale du Canada) is a Canadian multinational financial services company and the largest bank in Canada by market capitalization. The bank serves over 19 million clients and has more than 101,000 employees worldwide. Founded in 1864 in Halifax, Nova Scotia, it maintains its corporate headquarters in Toronto and its head office in Montreal. RB

The Royal British Bank was a British joint-stock bank, established under a Royal Charter in 1849, that collapsed in 1856. This caused a scandal. The circumstances were described by The Economist as "an extraordinary example of the little trouble the public take to think for themselves".

The Royal Canadian Mint (French: Monnaie royale canadienne) is the mint of Canada and a Crown corporation, operating under an act of parliament referred to as the Royal Canadian Mint Act. The shares of the mint are held in trust for the Crown in right of Canada.

The Royal Malaysian Customs Department (Abbr.; RMCD; Malay: Jabatan Kastam Diraja Malaysia – JKDM; Jawi: جابتن كستم دراج مليسيا); is a government department body under the Ministry of Finance. RMCD functions as the country's main indirect tax collector, facilitating trade and enforcing laws.

The Royal Mint Limited is the United Kingdom's official maker of British coins. It is currently located in Llantrisant, Wales, where it moved in 1968.

Royal Mint Gold was a digital gold currency and a cryptocurrency backed by gold reserves in the UK Royal Mint. The Royal Mint launched a digitized token called RMG, representing one gram of physical gold per token, in 2016. It began testing blockchain transactions in April 2017. The first test transaction was in August 2017. The rollout was originally scheduled to occur by the end of 20

A royalty fund (also known as royalty funding) is a category of private equity fund that specializes in purchasing consistent revenue streams deriving from the payment of royalties. Royalties are a usage-based payment from one individual or entity to another individual or entity, giving the right to use an asset, product, service or idea.

R.R. Donnelley & Sons Co. (styled RR Donnelley) or RRD is an American integrated communications company that provides marketing and business communications, commercial printing, and related services. Its corporate headquarters are located in Chicago, Illinois, United States. In 2007, R.R. Donnelley was the world's largest commercial printer. In 2021, it was referred to as North America's

RSA Security LLC, formerly RSA Security, Inc. and trade name RSA, is an American computer and network security company with a focus on encryption and decryption standards. RSA was named after the initials of its co-founders, Ron Rivest, Adi Shamir and Leonard Adleman, after whom the RSA public key cryptography algorithm was also named. Among its products is the SecurID authentication tok

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

In finance, the rule of 72, the rule of 70 and the rule of 69.3 are methods for estimating an investment's doubling time. The rule number (e.g., 72) is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling. Although scientific calculators and spreadsheet programs have functions to find the accurate doubling time, t

Rum-running, or bootlegging, is the illegal business of smuggling alcoholic beverages where such transportation is forbidden by law. Smuggling circumvents alcohol taxes and outright prohibition of alcohol sales.

RuneScape is a fantasy massively multiplayer online role-playing game (MMORPG) developed and published by Jagex. Created by Andrew Gower with assistance from his brother Paul Gower, it was first released on 4 January 2001 as a Java-based browser game; the original Java client was later largely replaced by the standalone C++ NXT client in 2016. The game is set in the medieval fantasy worl

RuPay (portmanteau of Rupee and Payment) is an Indian multinational financial services and payment service system, conceived and owned by the National Payments Corporation of India (NPCI). It was launched in 2012, to fulfil the Reserve Bank of India's (RBI) vision of establishing a domestic, open and multilateral system of payments. RuPay facilitates electronic payments at almost all Ind

Rupee (UK: , US: ) is the common name for the currencies of India, Mauritius, Nepal, Pakistan, Seychelles, and Sri Lanka, and of former currencies of Afghanistan, Bahrain, Bangladesh, Kuwait, Oman, the United Arab Emirates (as the Gulf rupee), British East Africa, Burma, German East Africa (as Rupie/Rupien), and Tibet. In Indonesia and the Maldives, the unit of currency is known as rupi

A rural credit cooperative (RCC) (Chinese: 农村信用合作社) or (simplified Chinese: 农村信用社; traditional Chinese: 農村信用社; pinyin: nóngcūn xìnyòngshè) is a cooperative or credit union sanctioned by People's Bank of China to provide credit in the rural areas of the People's Republic of China.