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Digital assets and currencies

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

Finance

Affirm Holdings

Affirm Holdings, Inc. is an American financial technology company and a point-of-sale lender. Founded in 2012 by PayPal co-founder Max Levchin, it is the largest U.S. based buy now, pay later (BNPL) financier. As of 2026, Affirm reports nearly 28 million users and processes $50 billion in annual payments.

Fiat currencies

Allan H. Meltzer

Allan H. Meltzer (; February 6, 1928 – May 8, 2017) was an American economist and Allan H. Meltzer Professor of Political Economy at Carnegie Mellon University's Tepper School of Business and Institute for Politics and Strategy in Pittsburgh, Pennsylvania. Meltzer specialized on studying monetary policy and the Federal Reserve System, and authored several academic papers and books on th

Trading basics

Artificial intelligence in insurance

Artificial intelligence in insurance is the use of machine learning and other artificial intelligence (AI) techniques by insurance companies and intermediaries, for tasks such as underwriting, pricing, claims handling, fraud detection and customer service. Insurers have used statistical models to classify and price risks for decades, and actuaries adopted generalized linear models in the

Trading basics

Barnes & Noble

Barnes & Noble Booksellers is an American bookseller with the largest number of retail outlets in the United States. The company operates approximately 600 retail stores across the United States.

Trading basics

Barneys New York

Barneys New York is an American luxury department store founded in 1923 by Barney Pressman. It introduced many major brands to the American market including Armani, Azzedine Alaïa, Comme des Garçons, Christian Louboutin, and Zegna.

Trading basics

Bitcoin and politics

Bitcoin and politics influence each other in several ways. Governments of several countries use Bitcoin in various capacities, and some politicians use Bitcoin in their electoral programs.

Finance

Bloomberg L.P.

Bloomberg L.P. is an American privately held financial, software, data, and media company headquartered in Midtown Manhattan, New York City. It was co-founded by Michael Bloomberg in 1981, with Thomas Secunda, Duncan MacMillan, Charles Zegar, and a 12% ownership investment by Merrill Lynch.

Trading basics

Bumble Bee Foods

Bumble Bee Foods, LLC, is an American company that produces canned tuna, salmon, other seafoods, and chicken under the brand names "Bumble Bee," "Wild Selections," "Beach Cliff," "Brunswick," and "Snow's." The brand is marketed as "Clover Leaf" in Canada. The company is headquartered in San Diego, California, United States. It is owned by FCF Co, Ltd. of Taiwan.

Payments & settlement

Change Healthcare

Change Healthcare Inc. (previously known as Emdeon) is a healthcare technology company that provides revenue cycle management and payment processing services for healthcare providers and insurers in the United States. The business was acquired by Optum in a $13 billion deal in 2022, in an effort to combine their service operations with the aforementioned technologies that Change Healthca

Trading basics

CKE Restaurants

CKE Restaurants Holdings, Inc. (an acronym for Carl Karcher Enterprises) is an American fast food corporation and is the parent organization for the Carl's Jr., Hardee's, Green Burrito, and Red Burrito brands. CKE Restaurants is headquartered in Franklin, Tennessee.

Trading basics

Debt settlement

Debt settlement (also called debt reduction, debt negotiation or debt resolution) is a settlement negotiated with a debtor's unsecured creditor. Commonly, creditors agree to forgive a large part of the debt: perhaps around half, though results can vary widely. When settlements are finalized, the terms are put in writing. It is common that the debtor makes one lump-sum payment in exchange

Finance

Debtors' prison

A debtors' prison is a prison for people who are unable to pay debt. Until the mid-19th century, debtors' prisons (usually similar in form to locked workhouses) were a common way to deal with unpaid debt in Western Europe. Destitute people who were unable to pay a court-ordered judgment would be incarcerated in these prisons until they had worked off their debt via labour or secured outs

Trading basics

Denny's

Denny's (also known as Denny's Diner on some locations' signage) is an American table service diner-style restaurant chain. It operates over 1,400 restaurants in the United States, Canada, Mexico, Puerto Rico, and several other international locations.

Trading basics

Direct-to-consumer advertising

Direct-to-consumer advertising (DTCA) refers to the marketing and advertising of pharmaceutical products directly to consumers as patients, as opposed to specifically targeting health professionals. The term is synonymous primarily with the advertising of prescription medicines via mass media platforms—most commonly on television and in magazines, but also via online platforms.

Fiat currencies

Economics of bitcoin

Bitcoin was designed by its pseudonymous inventor, Satoshi Nakamoto, to work as a currency, but its status as a currency is disputed. Economists define money as a store of value, a medium of exchange and a unit of account, and agree that bitcoin does not currently meet all these criteria.

Trading basics

Epic Games

Epic Games, Inc. is an American video game and software developer and publisher based in Cary, North Carolina. The company was founded by Tim Sweeney as Potomac Computer Systems in 1991, originally located in his parents' house in Potomac, Maryland. Following its first commercial video game release, ZZT (1991), the company became Epic MegaGames, Inc. in early 1992 and brought on Mark Rei

Trading basics

Excite (web portal)

Excite was a web portal providing a list of hyperlinks to other websites online from 1995 to 2026. Founded in 1993, Excite.com was once the world's sixth most visited website in 1997. It merged with @Home Network in 1999 and filed for bankruptcy in 2001, after the bursting of the dot-com bubble; the website went into a steep decline in popularity thereafter. Its services were acquired by

Trading basics

Flat rate

A flat fee, also referred to as a flat rate or a linear rate refers to a pricing structure that charges a single fixed fee for a service, regardless of usage. Less commonly, the term may refer to a rate that does not vary with usage or time of use.

Finance

GameStop short squeeze

In January 2021, a short squeeze of the stock of the American video game retailer GameStop and other securities took place, causing major financial consequences for certain hedge funds and large losses for short sellers. Approximately 140 percent of GameStop's public float had been sold short, and the rush to buy shares to cover those positions as the price rose caused it to rise even fu

Trading basics

Gasoline and diesel usage and pricing

The usage and pricing of gasoline (or petrol) results from factors such as crude oil prices, processing and distribution costs, local demand, the strength of local currencies, local taxation or subsidy, and the availability of local sources of gasoline (supply). Since fuels are traded worldwide, the trade prices are similar. The price paid by consumers largely reflects national pricing

Trading basics

Gun show loophole

In U.S. politics, the gun show loophole (or the private sale exemption) is the absence of a federal requirement for background checks for private sales of firearms. Federal law requires that all commercial sales of firearms conduct a background check of the buyer. There are also local and state laws regulating background check requirements for the purchase of firearms. The rules regardin

Trading basics

History of nicotine marketing

The history of nicotine marketing stretches back centuries. Nicotine marketing has continually developed new techniques in response to historical circumstances, societal and technological change, and regulation. Counter marketing has also changed, in both message and commonness, over the decades, often in response to pro-nicotine marketing.

Trading basics

Houghton Mifflin Harcourt

Houghton Mifflin Harcourt Company (HMH)

Trading basics

Immigrant investor programs

Immigrant investor programs are immigration programs offered by countries or territories that allow individuals to more quickly obtain residence or citizenship of a country in return for making qualifying and substantive investments. Broadly, the programs offer either citizenship by investment ("golden passport" or "cash-for-passports"), residence by investment ("golden visa"), or a hybr

Trading basics

In-game advertising

In-game advertising (IGA) is advertising in electronic games. IGA differs from advergames, which refers to games specifically made to advertise a product. The IGA industry is large and growing.

Securities & exchanges

Jim Cramer

James Joseph Cramer (born February 10, 1955) is an American television personality, author, entertainer and former hedge fund manager. He is the host of Mad Money on CNBC and an anchor on Squawk on the Street. After graduating from Harvard College and Harvard Law School, he worked for Goldman Sachs and then became a hedge fund manager, founder and senior partner of Cramer Berkowitz.

Securities & exchanges

Judy Joo

Judy Joo (born December 9, 1974 or 1975) is an American chef, author, restaurateur, and television personality. She is best known as the host of Food Network's Korean Food Made Simple, and an Iron Chef UK and her restaurant Seoul Bird in London, Edinburgh, Las Vegas, and New York.

Securities & exchanges

Ken Griffin

Kenneth Cordele Griffin (born 1968) is an American hedge fund manager, entrepreneur and investor. He is the founder, chief executive officer, co-chief investment officer, and 80% owner of Citadel LLC, a multinational hedge fund. He also owns Citadel Securities, one of the largest market makers in the United States.

Payments & settlement

Lemon Wallet

Lemon Wallet was a cloud-based digital wallet that allowed users to store digital copies of credit cards, debit cards, reward cards, as well as identification, and other card information. The service was released in July 2011 and the company is based in Palo Alto, California, United States. Wences Casares was the company's CEO.

Trading basics

Leon Black

Leon David Black (born July 31, 1951) is an American private equity investor. He is the former CEO of Apollo Global Management, which he co-founded in 1990 with Marc Rowan and Josh Harris. Black was the chairman of the Museum of Modern Art from 2018 to 2021. Black resigned from both Apollo Global Management and the Museum of Modern Art in the wake of revelations about his business ties t

Payments & settlement

LevelUp

LevelUp was an American white-label platform for restaurants offering mobile ordering, QR-code payments and loyalty/CRM tools. It was created by Boston-based startup SCVNGR. Grubhub announced its acquisition of LevelUp for US$390 million in July 2018 and closed the deal on September 13, 2018. Post-acquisition, LevelUp’s technology was integrated into Grubhub’s restaurant-facing products,

Banking

List of bank runs

This is a list of bank runs. A bank run occurs when a large number of bank customers withdraw their deposits because they believe the bank might fail. As more people withdraw their deposits, the likelihood of default increases, and this encourages further withdrawals. This can destabilize the bank to the point where it faces bankruptcy.

Trading basics

Macy's, Inc.

Macy's, Inc. (previously Federated Department Stores, Inc.) is an American holding company of department stores. Upon its establishment in 1929, Federated held ownership of the regional department store chains Abraham & Straus, Lazarus, Filene's, and Shillito's. Bloomingdale's joined Federated Department Stores the next year. Throughout its early history, frequent acquisitions and divest

Assets

Malone Lam

Malone Lam Yu Xuan (born 19 July 2004) is a Singaporean man convicted for his connection to a cryptocurrency theft and money laundering scheme exceeding $260 million, according to the U.S. Attorney's Office for the District of Columbia.

Trading basics

Medical debt

Medical debt refers to debt incurred by individuals due to health care costs and related expenses, such as an ambulance ride or the cost of visiting a doctor.

Payments & settlement

Merchant account

A merchant account is a type of bank account that allows a seller, known as the merchant, to accept payments by debit or credit cards. A merchant account is established under an agreement between an acceptor and a merchant acquiring bank for the settlement of payment card transactions. In some cases a payment processor, payment service provider, independent sales organization (ISO), or

Securities & exchanges

MF Global

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

Finance

Ministry of Finance (Azerbaijan)

The Ministry of Finance of Azerbaijan Republic (Azerbaijani: Azərbaycan Respublikasının Maliyyə Nazirliyi) is a governmental agency within the Cabinet of Azerbaijan in charge of regulating the financial sector in Azerbaijan Republic. The ministry is headed by Sahil Babayev.

Finance

Mr. Money Mustache

Mr. Money Mustache is the website and pseudonym of Canadian-born blogger Peter Adeney. Adeney retired from his job as a software engineer in 2005 at age 30 by spending only a small percentage of his annual salary and consistently investing the remainder, primarily in stock market index funds.

Trading basics

Murder of Nancy Pfister

Nancy Merle Pfister was an American woman who was found murdered on February 26, 2014, in a walk-in closet of her secluded home in the Rocky Mountains. She had been beaten in the head and chest with a hammer, ax, and lamp. Pfister has been described as having been a "small-town socialite" and was well known in her small community. In October 2014, Trey and Nancy Styler, Pfister's former

Trading basics

MyHeritage

MyHeritage is an online genealogy company with web, mobile, and software products and services, founded in Israel in 2003. Users of the platform can obtain their family trees, upload and browse through photos, and search through over 19.9 billion historical records, among other features. In early 2021 it was acquired by Francisco Partners, an American private equity firm, for $600 millio

Finance

Nouriel Roubini

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

Trading basics

Occupy Homes

Occupy Homes or Occupy Our Homes is part of the Occupy movement which attempts to prevent the foreclosure of people's homes. Protesters delay foreclosures by camping out on the foreclosed property. They also stage protests at the banks responsible for the ongoing foreclosure crisis, sometimes blocking their entrances. It has been compared to the direct action taken by people to prevent h

Trading basics

PetSmart

PetSmart is an American chain of pet superstores, which sell pet products, services, and small pets. As of 2020, PetSmart has more than 1,650 stores in the United States and Canada. PetSmart stores sell pet food, pet supplies, pet accessories, and small pets. Stores also provide services including grooming, dog daycare, dog and cat boarding, veterinary care via in-store third-party clin

Trading basics

Price ceiling

A price ceiling or price cap is a government- or group-imposed price control, or limit, on how high a price is charged for a product, commodity, or service. Governments impose price ceilings to protect consumers from conditions that could make commodities prohibitively expensive. Economists generally agree that consumer price controls do not accomplish what they intend to in market econo

Trading basics

Red Lobster

Red Lobster Hospitality LLC is an American casual dining restaurant chain headquartered in Orlando, Florida. The company has operations across most of the United States (including Puerto Rico), and Canada, as well as in Ecuador, Japan, Mexico, and Thailand. Golden Gate Capital was Red Lobster's parent company after it was acquired from Darden Restaurants on July 28, 2014. Seafood supplie

Trading basics

Short-term rental

Short-term rentals (STR) are furnished lodging rented for short periods of time. They can be used as alternatives to hotels for vacation rentals and housing during relocation. They are usually reserved via online marketplaces.

Finance

SoFi

SoFi Technologies, Inc. (abbreviated as SoFi, short for Social Finance) is an American financial technology company. Founded in 2011 by Stanford University graduates as a student loan refinancier, it operates a direct bank serving retail customers and businesses. SoFi is the largest U.S.-based online lender, and has nearly 16 million customers as of 2026.

Trading basics

Sports betting

Sports betting is the activity of predicting sports results and placing a wager on the outcome.

Trading basics

Tactical asset allocation

Tactical asset allocation (TAA) is a dynamic investment strategy that actively adjusts a portfolio's asset allocation. The goal of a TAA strategy is to improve the risk-adjusted returns of passive management investing.

Trading basics

Targeted advertising

Targeted advertising or data-driven marketing is a form of advertising, including online advertising, that is directed towards an audience with certain traits, based on the product or person the advertiser is promoting.

Securities & exchanges

Tax loss harvesting

Tax loss harvesting (TLH) refers to a category of tax-efficient investment strategies that seek to accelerate the realization of capital losses and defer the realization of capital gains.

Trading basics

TikTok Shop

TikTok Shop is an e-commerce feature of the video hosting service TikTok. Officially launched in September 2023, the feature enables users interested in starting a business and generating income to upload their curated products on TikTok for others to discover and purchase. Daily sales averaged approximately US$7 million in October 2023.As of October 2026, it has been estimated that 54 m

Assets

Trial of Sam Bankman-Fried

United States of America v. Samuel Bankman-Fried was a 2023 federal criminal trial in the United States District Court for the Southern District of New York. Financial entrepreneur Sam Bankman-Fried, commonly known as SBF, was convicted on seven charges of fraud and conspiracy following the collapse of his cryptocurrency exchange FTX in November 2022. After the jury's verdict in November

Trading basics

United States debt ceiling

In the United States, the debt ceiling is a law limiting the total amount of money the federal government can borrow. Since 2025, the debt ceiling is $41.1 trillion after being raised by $5 trillion through the "One Big Beautiful Bill Act" (OBBBA). The debt ceiling is expected to breach by 2027. The U.S. government has borrowed to finance its budget since 2002, running a structural budge

Trading basics

Vertical integration

In microeconomics, management and international political economy, vertical integration, also referred to as vertical consolidation, is an arrangement in which the supply chain of a company is integrated and owned by that company. Usually each member of the supply chain produces a different product or (market-specific) service, and the products combine to satisfy a common need. It contra

Securities & exchanges

Volfefe index

The Volfefe Index was a stock market index of volatility in market sentiment for US Treasury bonds caused by tweets by President Donald Trump.

Trading basics

Wealth inequality in the United States

The inequality of wealth (i.e., inequality in the distribution of assets) has substantially increased in the United States since the late 1980s. Wealth commonly includes the values of any homes, automobiles, personal valuables, businesses, savings, and investments, less any associated debts.