Business

By taking Twitter private, Musk makes daring bet

Elon Musk's decision to pull Twitter off the stock market allows him to make major changes quickly, but it also takes the company more heavily into debt, a risky choice for a money-losing business.

Business

Elon Musk subpoenas former Twitter chief Jack Dorsey

Elon Musk has served former Twitter boss Jack Dorsey with a subpoena in a hunt for material to help him get out of buying the giant social media platform for $44 billion as agreed.

Business

Chipmakers' pandemic boom turns to bust as recession looms

Even in an industry famous for its rollercoaster cycles, chipmakers are bracing for a particularly severe shift in coming months, when a record-setting sales surge is threatening to give way to the worst decline in a decade ...

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Stock market

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.

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