Biomedical technology

Embattled Philips says respirators 'within safety limits'

Under-fire Dutch medical device maker Philips said Wednesday extensive testing on its recalled respirator devices showed they were "within safety limits" for use, but that a final verdict rests with global regulatory authorities.

Other

Pfizer in talks on $5 billion acquisition: media

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.

Other

Philips faces fresh hit from toxic foam recall

Dutch electronics giant Philips said Wednesday it has set aside a further 225 million euros for a recall of faulty respiratory equipment that puts users at risk of inhaling toxic foam.

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Stock exchange

A stock exchange, (formerly a securities exchange) is a corporation or mutual organization which provides "trading" facilities for stock brokers and traders, to trade stocks and other securities. Stock exchanges also provide facilities for the issue and redemption of securities as well as other financial instruments and capital events including the payment of income and dividends. The securities traded on a stock exchange include: shares issued by companies, unit trusts, derivatives, pooled investment products and bonds. To be able to trade a security on a certain stock exchange, it has to be listed there. Usually there is a central location at least for recordkeeping, but trade is less and less linked to such a physical place, as modern markets are electronic networks, which gives them advantages of speed and cost of transactions. Trade on an exchange is by members only. The initial offering of stocks and bonds to investors is by definition done in the primary market and subsequent trading is done in the secondary market. A stock exchange is often the most important component of a stock market. Supply and demand in stock markets is driven by various factors which, as in all free markets, affect the price of stocks (see stock valuation).

There is usually no compulsion to issue stock via the stock exchange itself, nor must stock be subsequently traded on the exchange. Such trading is said to be off exchange or over-the-counter. This is the usual way that derivatives and bonds are traded. Increasingly, stock exchanges are part of a global market for securities.

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