Neuroscientists have uncovered a key brain area in rats that encodes the value of economic choices when faced with the uncertainty of a lottery. This is the first time the causal role of frontal and parietal cortex has been ...
Oct 19, 2023
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Swiss generic drugs group Sandoz began trading as an independent company in Zurich on Wednesday, in a stock market debut following a spin-off by parent company Novartis as it pivots toward new drug development.
Oct 4, 2023
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Is happiness something to work hard towards and accumulate over time or is it something transient and fleeting that should be savored in the moment?
May 29, 2023
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A campaign to vaccinate the elderly has sparked hopes China might roll back severe anti-virus controls that prompted protesters to demand President Xi Jinping resign, but the country faces daunting hurdles and up to a year ...
Nov 30, 2022
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Chinese health officials gave no indication Saturday of any relaxation of COVID-19 restrictions, following several days of speculation that the government was considering changes to a "zero-COVID" approach that has stymied ...
Nov 6, 2022
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Most developed countries hold significant quantities of medical supplies in reserve to respond in an emergency.
Oct 24, 2022
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American drugmaker Pfizer is close to a deal to purchase Global Blood Therapeutics, which manufactures a recently approved drug against sickle-cell anemia, for $5 billion, the Wall Street Journal has reported.
Aug 7, 2022
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China began its most extensive coronavirus lockdown in two years Monday to conduct mass testing and control a growing outbreak in Shanghai as questions are raised about the economic toll of the nation's "zero-COVID" strategy.
Mar 28, 2022
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The World Health Organization says it could still take some time to get a full picture of the threat posed by omicron, a new variant of the coronavirus as scientists worldwide scramble to assess its multiple mutations.
Nov 29, 2021
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The new COVID variant, dubbed Omicron and originally detected in South Africa, poses a "high to very high" risk to Europe, the EU health agency warned on Friday.
Nov 27, 2021
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A stock market is a public market for the trading of company stock and derivatives at an agreed price; these are securities listed on a stock exchange as well as those only traded privately.
The size of the world stock market was estimated at about $36.6 trillion US at the beginning of October 2008. The total world derivatives market has been estimated at about $791 trillion face or nominal value, 11 times the size of the entire world economy. The value of the derivatives market, because it is stated in terms of notional values, cannot be directly compared to a stock or a fixed income security, which traditionally refers to an actual value. Moreover, the vast majority of derivatives 'cancel' each other out (i.e., a derivative 'bet' on an event occurring is offset by a comparable derivative 'bet' on the event not occurring.). Many such relatively illiquid securities are valued as marked to model, rather than an actual market price.
The stocks are listed and traded on stock exchanges which are entities of a corporation or mutual organization specialized in the business of bringing buyers and sellers of the organizations to a listing of stocks and securities together. The stock market in the United States includes the trading of all securities listed on the NYSE Euronext, the NASDAQ, the Amex, as well as on the many regional exchanges, e.g. OTCBB and Pink Sheets. European examples of stock exchanges include the London Stock Exchange, the Deutsche Börse.
This text uses material from Wikipedia, licensed under CC BY-SA
