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Mark E. Kingdon is a hedge fund manager and president of Kingdon Capital Management, a US investment management company with approximately $623 million in assets under management.

Mark Spitznagel (; born March 5, 1971) is an American investor and hedge fund manager. He is the founder, owner, and chief investment officer of Universa Investments, a hedge fund management firm based in Miami, Florida.

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

Market capitalization, sometimes referred to as market cap, is the total value of a publicly traded company's outstanding common shares owned by stockholders.

In finance, market data is price and other related data for a financial instrument reported by a trading venue such as a stock exchange. Market data allows traders and investors to know the latest price and see historical trends for instruments such as equities, fixed-income products, derivatives, and currencies.

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.

In economics and finance, market manipulation occurs when someone intentionally alters the supply or demand of a security to influence its price. This can involve spreading misleading information, executing misleading trades, or manipulating quotes and prices.

Market monetarism is a school of macroeconomics that advocates that central banks use a nominal GDP level target instead of inflation, unemployment, or other measures of economic activity, with the goal of mitigating demand shocks such as those experienced during the 2008 financial crisis and the 2021–2023 inflation surge. Market monetarists criticize the fallacy that low interest rates

An investment strategy or portfolio is considered market-neutral if it seeks to avoid some form of market risk entirely, typically by hedging. To evaluate market neutrality requires specifying the risk to avoid. For example, convertible arbitrage attempts to fully hedge fluctuations in the price of the underlying common stock. A portfolio is truly market-neutral if it exhibits zero corre

Market portfolio is an investment portfolio that theoretically consisting of a weighted sum of every asset in the market, with weights in the proportions that they exist in the market, with the necessary assumption that these assets are infinitely divisible.

Market risk is the risk of losses in positions arising from movements in market variables like prices and volatility.

Market Rules to Remember is a list of ten cautionary rules for investors that was written in 1998 by the then-retired Chief Market Analyst at Merrill Lynch, Bob Farrell. The rules became iconic on Wall Street and are frequently reprinted in leading financial advisory publications.

Market sentiment, also known as investor attention, is the general prevailing attitude of investors as to anticipated price development in a market. This attitude is the accumulation of a variety of fundamental and technical factors, including price history, economic reports, seasonal factors, and national and world events. If investors expect upward price movement in the stock market, t

Market timing is the strategy of making buying or selling decisions of financial assets (often stocks) by attempting to predict future market price movements (market trends). The prediction may be based on an outlook of market or economic conditions resulting from technical or fundamental analysis. This is an investment strategy based on the outlook for an aggregate market rather than fo

Market value or OMV (open market valuation) is the price at which an asset would trade in a competitive auction setting. Market value is often used interchangeably with open market value, fair value or fair market value, although these terms have distinct definitions in different standards, and differ in some circumstances.

MarketAxess Holdings Inc., headquartered in New York City, operates electronic trading platforms used to trade bonds and other fixed income products. It has approximately 2,100 customers, all of which are either institutional investors (91.3% of 2025 volume) or broker-dealers (8.7% of 2025 volume).

Marketing effectiveness is the measure of how effective a given marketer's go to market strategy is toward meeting the goal of maximizing their spending to achieve positive results in both the short- and long-term.

Marketing management is the strategic organizational discipline that focuses on the practical application of marketing orientation, techniques and methods inside enterprises and organizations and on the management of marketing resources and activities.

Marketing mix modeling (MMM) is a statistical causal inference and forecasting methodology used to estimate the impact of various marketing tactics on product sales. MMMs use statistical models, such as multivariate regressions, and use sales and marketing time-series data. They are often used to optimize advertising mix and promotional tactics with respect to sales, revenue, or profit t

Markets in Financial Instruments Directive 2014 (2014/65/EU, commonly known as MiFID 2) is a directive of the European Union (EU). Together with Regulation No 600/2014 it provides a legal framework for securities markets, investment intermediaries, in addition to trading venues. The directive provides harmonised regulation for investment services of the member states of the European Econ

Markit was a British financial information and services company that focused on credit derivative pricing founded in 2003.

In finance, the Markowitz model ─ put forward by Harry Markowitz in 1952 ─ is a portfolio optimization model;

Marsh Supermarkets was an American retail food chain headquartered in Indianapolis, Indiana, with a peak number of 86 stores in 2013 located throughout central Indiana and parts of western Ohio (including metropolitan Cincinnati). Its eventual parent company was Sun Capital Partners, headquartered in Boca Raton, Florida.

Martingale pricing is a pricing approach based on the notions of martingale and risk neutrality. The martingale pricing approach is a cornerstone of modern quantitative finance and can be applied to a variety of derivatives contracts, e.g. options, futures, interest rate derivatives, credit derivatives, etc.

Masco Corporation is an American manufacturer of products for the home improvement and new home construction markets. Comprising more than 20 companies, the Masco conglomerate operates nearly 60 manufacturing facilities in the United States and over 20 in other parts of the world. Since 1969 it trades on the NYSE. Under the leadership of Richard Manoogian, the company grew exponentially

Mass media refers to the forms of media that reach large audiences via mass communication. It includes broadcast media, digital media, print media, social media, streaming media, advertising, and events.

Massa Frumentaria or Monte Frumentario was a medieval grain fund established in Malta. As a public institution, it was tasked with the importation and distribution of wheat and other commodities, while also serving as a precursor to an investment bank. The fund was administered by the Università, a municipal body under the control of the Knights of St. John, and later continued under Bri

A Master of Financial Economics is a postgraduate master's degree focusing

Matchbook FX was an Internet-based electronic communication network ("ECN" or Electronic Trading Network) for trading currency online in the Spot-FX or foreign exchange market. It operated between 1999 and 2002.

McCormick & Schmick's Seafood Restaurants Inc. is an American seafood restaurant chain, formerly based in Portland, Oregon. As of December 2024, the company operates 15 locations and one catering service in the United States and one Canadian location that operates under the Boathouse name. A sale to the parent company, Landry's, Inc., was completed in January 2012. Landry's corporate hea

Mean reversion is a financial term for the assumption that an asset's price will tend to converge to the average price over time.

In political philosophy, the means of production are the generally necessary assets and resources that enable a society to engage in production. While the exact resources encompassed may vary, they are widely agreed to include the classical factors of production (land, labor, and capital) as well as the general infrastructure and capital goods necessary to reproduce stable levels of prod

Media manipulation refers to orchestrated campaigns in which actors exploit the distinctive features of broadcasting mass communications or digital media platforms to mislead, misinform, or create a narrative that advances the interests and agendas of perpetrators of such campaigns.

Mediq is a Dutch health care company, which provides pharmaceuticals and medical supplies, by operating apothecaries and by delivering to medical centres and patients. The company is active in 15 countries and in 2012 had a revenue of €2.61 billion. Since 2013, it has been owned by Advent International.

In business and investing, a megacap stock (also mega-cap or mega cap) is a stock whose market capitalization (market cap) is among the very largest. These are stocks of the largest publicly traded companies in the world. The market capitalization of a stock is the total value of the shares outstanding, calculated as (shares outstanding x share price). Stocks with large market caps, but

A meme coin (also spelled memecoin) is a cryptocurrency that originated from an internet meme or has some other humorous characteristic.

A merchant bank is historically a bank dealing in commercial loans and investment. In modern British usage, it is the same as an investment bank. Merchant banks were the first modern banks and evolved from medieval merchants who traded in commodities, particularly cloth merchants. Historically, merchant banks' purpose was to facilitate or finance the production and trade of commodities,

MerchantBridge & Co. Ltd. was a London-based boutique private equity firm that specialized in investments in the Middle East and especially Iraq, where it was one of the largest such firms. It was in existence from 2001 to 2018.

Mergers and acquisitions in United Kingdom law refers to a body of law that covers companies, labour, and competition, which is engaged when firms restructure their affairs in the course of business.

Merlin Entertainments Limited is a global entertainment company based in London, England, which operates a number of theme park resorts and other visitor attractions. It is currently owned by the consortium Motion JVCO Ltd, which includes Kirkbi (the investment arm of the Kristiansen family that also controls the Lego Group), Blackstone Inc and CPP Investments.

Merrill Lynch, Pierce, Fenner & Smith Incorporated, doing business as Merrill, and previously branded Merrill Lynch, is an American multinational investment management and wealth management division of Bank of America. Along with BofA Securities, the investment banking arm, both firms engage in prime brokerage and broker-dealer activities. The firm is headquartered in New York City, and

The Merton model, is a widely used "structural" credit risk model, which was developed by American economist Robert C. Merton in 1974.

The MSCI Merval, known as the S&P Merval until October 2026, is the main stock market index of Bolsas y Mercados Argentinos (BYMA). It tracks the largest and most liquid stocks within the MSCI BYMA Argentina General index.

Mervyn's was an American middle-scale department store chain that was based in Hayward, California, and founded by Mervin G. Morris (1920–2021). It carried national brands of clothing, footwear, bedding, bath products, furniture, jewelry, beauty products, electronics, toys, and housewares. Many of the company's stores were opened in shopping malls; however, some locations were operated i

Metacafe was an Israeli video-sharing website, launched in July 2003. During the mid-2000s it was one of the largest video-sharing websites, though it eventually began to be superseded by YouTube, Vimeo and Dailymotion. On 28 August 2021, Metacafe's website and social profiles became inactive.

The Mexican miracle (Spanish: Milagro mexicano) is a term used to refer to the country's inward-looking development strategy that produced sustained economic growth. It is considered to be a golden age in Mexico's economy in which the Mexican economy grew 6.8% each year. It was a stabilizing economic plan which caused an average growth of 6.8% and industrial production to increase by 8%

Mezzanine capital is a type of financing that sits between senior debt and equity in a company's capital structure. It is typically used to fund growth, acquisitions, or buyouts. Technically, mezzanine capital can be either a debt or equity instrument with a repayment priority between senior debt and common stock equity. Mezzanine debt is subordinated debt that represents a claim on a co

MF Global Holdings Ltd., formerly known as Man Financial, was a major global financial derivatives broker, or commodities brokerage firm that went bankrupt in 2011. MF Global provided exchange-traded derivatives, such as futures and options as well as over-the-counter products such as contracts for difference (CFDs), foreign exchange and spread betting. MF Global Inc., its broker-deal

MIAX Pearl Equities (MIAX), is an American stock exchange headquartered in Princeton, New Jersey. The exchange also has offices in Miami, Florida, where its parent company Miami International Holdings is based.

MICA, formerly MICA Foundation for communications Research and Education, is a private business school located in Ahmedabad, India. MICA has a wide range of academic offerings including residential programmes for Post Graduate Management Studies and a Fellow Programme in Management (Communication) (residential, but off campus).

Michael Anthony Ashcroft, Baron Ashcroft, (born 4 March 1946) is a British-Belizean businessman, pollster and politician. He is a former deputy chairman of the Conservative Party. Ashcroft founded Michael A. Ashcroft Associates in 1972 and was the 132nd richest person in the UK, as ranked by the Sunday Times Rich List 2021, with an estimated fortune of £1.257 billion.

Michael Hudson (born March 14, 1939) is an American economist who is Professor of Economics at the University of Missouri–Kansas City and a researcher at the Levy Economics Institute at Bard College. He is a contributor to The Hudson Report, a weekly economic and financial news podcast produced by Left Out.

Michael McCullough is an American investor in healthcare and life science companies, social entrepreneur, and emergency room doctor. He was a Rhodes Scholar. He lives in Palo Alto, California.

Michael Robert Milken (born July 4, 1946) is an American financier. He is known for his role in the development of the market for high-yield bonds ("junk bonds"), which led to his reputation as the "Junk Bond King", and his conviction and sentence following a guilty plea on felony charges for violating U.S. securities laws. Milken's compensation while head of the high-yield bond departme

Michael R. Eisenson is a managing director and co-chairman of Charlesbank Capital Partners, LLC, a private equity investment firm based in Boston and New York. Eisenson co-founded the firm in 1998 and served as its CEO until 2017. Charlesbank raised its most recent fund, Charlesbank Equity Fund IX, in 2017, with $2.75 billion of investor commitments.

Michael H. Steinhardt (born December 7, 1940) is an American billionaire hedge fund manager and philanthropist. In 1967, he founded a hedge fund, Steinhardt Partners, which he ran until he closed it in 1995. After a hiatus from work, he returned to head WisdomTree Investments in 2004. In January 2014, he was on the cover of Forbes Magazine, referred to as "Wall Street's greatest trader".

Michaels Stores, Inc., doing business as Michaels, is an American privately held arts and crafts retail chain. It is North America's largest provider of arts, crafts, framing, floral and wall décor, and merchandise for makers and do-it-yourself home decorators. The company is a subsidiary of the Michaels Companies, which was founded in 2014 and headquartered in Irving, Texas. In additio

A microcap stock is a public company that has a very small market capitalization, below the cutoff for small-cap stocks. Depending on the market segmentation system in use, nanocap stocks are either a subset of the smallest microcaps, or a distinct segment of stocks with market capitalizations even smaller than those of microcaps. In the US, many microcap and nanocap stocks are traded ov

Microcap stock fraud is a form of securities fraud involving stocks of "microcap" companies, generally defined in the United States as those with a market capitalization of under $250 million. Its prevalence has been estimated to run into the billions of dollars a year. Many microcap stocks are penny stocks, which the SEC defines as a security that trades at less than $5 per share, is no

A micropayment is a financial transaction involving a very small sum of money and usually one that occurs online. Several micropayment systems were proposed and developed in the mid-to-late 1990s that were ultimately unsuccessful. A second generation of micropayment systems emerged in the 2010s.

Micros Systems, Inc. was an American computer company that manufactured hardware and developed software and services for the restaurant point of sale, hotel, hospitality, sports and entertainment venues, casinos, cruise lines, specialty retail markets, and other similar markets. Analyst estimates cited in 2003 put Micros' market share at about 35% of the restaurant point-of-sale business

Strategy Inc., stylized as Strategy₿ and formerly known as MicroStrategy, is an American company that provides business intelligence (BI) and mobile software. Founded in 1989 by Michael J. Saylor, Sanju Bansal, and Thomas Spahr, the firm develops software to analyze internal and external data in order to make business decisions and to develop mobile apps. It is a public company headquart

In development economics, the middle income trap is a situation where a country has developed until GDP per capita has reached a middle level of income, but the country does not develop further and does not attain high income country status. The term was introduced by the World Bank in 2007 who defined it as the "middle-income range" countries with gross national product per capita that

Midland Credit Management, Inc. is an American debt buyer and debt collection company headquartered in San Diego, California, and has offices throughout the United States as well as in India and Costa Rica. It is a wholly owned subsidiary of Encore Capital Group (Nasdaq: ECPG). It is one of the largest debt collectors in the United States.

MidOcean Partners, based in Midtown Manhattan, New York City, is an alternative asset management firm that specializes in mid-sized private equity and alternative leveraged investments.

Midwest Air Group, Inc. (formerly listed AMEX:MEH) is an American airline holding company based in Oak Creek, Wisconsin which owned Midwest Airlines which previously operated as Midwest Express Airlines. It was ultimately controlled by parent company, TPG Capital Texas Pacific Group. Delta with the merger of Northwest Airlines Inc,. now owns 47% of the reformulated company's stock in a "

Miguel Sidrauski (October 12, 1939 – September 1, 1968) was an Argentine economist who made important contributions to the theory of economic growth by developing a modified version of the Ramsey–Cass–Koopmans model to describe the effects of money on long-run growth. He also published an article on exchange rate determination. Sidrauski taught economics at Massachusetts Institute of T

Michael W. Vranos is an American hedge fund manager and philanthropist who in the 1990s was referred to by some as the "most powerful man on Wall Street." In 1993, he reportedly earned $15 million from trading mortgage bonds. Fortune Magazine once called him "one of the best bond traders on Wall Street." According to a 2007 Wall Street Journal article, he has continued to be regarded a

Milla de Oro (English for Golden Mile) is the main financial district of Puerto Rico, containing the largest agglomeration of corporate investment, banking, and financial institutions in the Caribbean. Located in the Hato Rey business center of San Juan, the capital municipality of the archipelago and island, it is concentrated in the sections of Juan Ponce de León Avenue and Luis Muñoz

Milton Friedman ( ; July 31, 1912 – November 16, 2006) was an American economist and statistician who received the 1976 Nobel Memorial Prize in Economic Sciences for his research on consumption analysis, monetary history and theory and the complexity of stabilization policy. With George Stigler, Friedman was among the intellectual leaders of the Chicago school of economics, a neoclassica

The Ministry of Economic Affairs, (abbreviated as MoEA) is a Cabinet-level ministry of the Government of Pakistan responsible for assessing, programming and negotiations of external economic assistance concerning the government and its constituent units from foreign governments and multilateral agencies.

The Ministry of Economic Affairs and Finance' is a ministry of the Iranian government that oversees treasury, commerce, industry, financial markets and labor in Iran. Its functions include:

The Ministry of Economy, Trade and Enterprise (MINECO) is the department of the Government of Spain responsible for proposing and carrying out the government policy on economic affairs, through reforms to improve competitiveness and trade, focused on business support and the potential growth of the economy. At the same time, it directs the commercial policy of internationalization of com

The Ministry of Finance of Afghanistan (Dari: وزارت مالیه افغانستان, Pashto: د افغانستان د مالیې وزارت) is responsible for the implementation and execution of the budget, collection of taxes, organization, and control of public expenses in Afghanistan; it also controls the management of the Custom Affairs. It is located next to the Pashtunistan Square in the Wazir Akbar Khan neighborhood

The Ministry of Finance (Arabic: وزارة المالیة, French: Ministère des finances) is a government ministry of Algeria responsible for public finances. As of 2025, Abdelkrim Bouzred is the current Minister of Finance.

The Ministry of Finance (German: Bundesministerium für Finanzen) is the government ministry of Austria responsible for the collection of taxes and customs as well as the administration of fiscal and economic policy. It oversees the Revenue Service, the Revenue Service for Large Businesses, the Financial Police, and various other agencies.

The Ministry of Finance (Spanish: Ministerio de Hacienda) is the cabinet-level administrative office in charge of managing the financial affairs, fiscal policy, and capital markets of Chile; planning, directing, coordinating, executing, controlling and informing all financial policies formulated by the President of Chile.

The Ministry of Finance of the People's Republic of China is the constituent department of the State Council of the People's Republic of China which administers macroeconomic policies and the annual budget. It also handles fiscal policy, economic regulations and government expenditure for the state. The ministry also records and publishes annual macroeconomic data on China's economy. T

The Ministry of Finance of Egypt is part of the Cabinet of Egypt. It is responsible for increasing the rate of economic growth and job creation, thus contributing to raising the standard of living of the individual and society as a whole. The minister was Mohamed Maait. It is located in the Government District of The New Capital.

The Ministry of Finance (IAST: Vitta Mantrālaya) is a ministry of the Government of India concerned with the economy of India, serving as the Treasury of India. In particular, it concerns itself with taxation, financial legislation, financial institutions, capital markets, currency regulation, banking service, centre and state finances, and the Union Budget.

The Ministry of Finance of the Russian Federation (Russian: Министерство финансов Российской Федерации), also known as MinFin (Минфин России), is a ministry of the Government of Russia responsible for financial policy and general management in the field of finance.

The Ministry of Finance, Planning and Economic Development (MoFPED) is a cabinet-level government ministry of Uganda. Its mandate is to formulate sound economic and fiscal policies, mobilize resources for the implementation of government programmes, disburse public resources as appropriated by Parliament, and account for their use in accordance with national laws and international best p

The Ministry of Public Finance (Spanish: Ministerio de Finanzas Públicas or MINFIN) is a government ministry of Guatemala in charge of fiscal policy and public finances.

The Ministry or Board of Revenue was one of the Six Ministries under the Department of State Affairs in imperial China.

Minority discount is an economic concept reflecting the notion that a partial ownership interest may be worth less than its proportional share of the total business. The concept applies to equities with voting power because the size of voting position provides additional benefits or drawbacks. For example, ownership of a 51% share in the business is usually worth more than 51% of its equ

Mirae Asset Financial Group (Korean: 미래에셋금융그룹) is a South Korean multinational financial services company headquartered in Seoul, South Korea. Mirae Asset provides comprehensive financial services including asset management, wealth management, investment banking, and life insurance. Mirae Asset was founded by Hyeon Joo Park in 1997 and introduced the first mutual funds to Korean retail i

Mirror trading is a trading selection methodology that can be carried out in both the foreign exchange and the stock markets; however, this is much more common in trading in the foreign exchange market.

Mischler Financial Group is the American boutique investment bank and brokerage that became the financial industry's first firm owned and operated by Service-Disabled Veterans.

Mismarking in securities valuation takes place when the value that is assigned to securities does not reflect what the securities are actually worth, due to intentional fraudulent mispricing. Mismarking misleads investors and fund executives about how much the securities in a securities portfolio managed by a trader are worth (the securities' net asset value, or NAV), and thus misreprese

Mitel Networks Corporation is a Canadian telecommunications company. The company previously produced TDM PBX systems and applications, but after a change in ownership in 2001, now focuses almost entirely on Voice-over-IP (VoIP), unified communications, collaboration and contact center products. Mitel is headquartered in Ottawa, Ontario, Canada, with offices, partners and resellers worldw

One MobiKwik Systems Limited, doing business as MobiKwik, is an Indian financial technology company, headquartered in Gurugram, Haryana. Founded in 2009 that provides a mobile phone-based payment system and digital wallet.

Mobile banking, also known as app-based banking is a service that allows a bank's customers to conduct financial transactions using a mobile device. Unlike the related internet banking it uses software, usually an app, provided by the bank. Mobile banking is usually available on a 24-hour basis. Many neobanks operate exclusively through mobile banking.

Modern Monetary Theory or Modern Money Theory (MMT) is a non-mainstream macroeconomic theory concerning the role of fiscal and monetary policy in sovereign governments that borrow and issue government debt in their own currency.

Modern portfolio theory (MPT), or mean-variance analysis, is a mathematical framework for assembling a portfolio of financial assets such that the expected return is maximized for a given level of risk. It is a formalization and extension of diversification in investing, the idea that owning different kinds of financial assets is less risky than owning only one type.

The Modigliani–Miller theorem (of Franco Modigliani, Merton Miller) is an influential element of economic theory; it forms the basis for modern thinking on capital structure. The basic theorem states that in the absence of taxes, bankruptcy costs, agency costs, and asymmetric information, and in an efficient market, the enterprise value of a firm is unaffected by how that firm is finance

The Molsons Bank was a Canadian bank founded in Montreal, Quebec, by brothers William (1793–1875) and John Molson, Jr. (1787–1860), the sons of brewery magnate John Molson.

A momentum crash is a sudden and significant decline in the performance of a momentum-based investment strategy, which involves buying assets that have shown an upward price trend and selling those with a downward trend. While this strategy can be profitable, it is also prone to sudden reversals that can result in large losses. These reversals can occur without warning, leading to a shar

Momentum investing is a system of buying stocks or other securities that have had high returns over the past three-to-twelve months, and selling those that have had poor returns over the same period.

Mondex was a smart card electronic cash system, implemented as a stored-value card and owned by Mastercard.