The history of rating agencies goes back to the 19th century, when the US rail network was expanding across the continent. The required credits that could not shoulder alone the banks. Industrial companies began to issue bonds in order to raise funds. Today three agencies dominate the market: Standard & amp; Poor’s, Moody’s and Fitch
Highly speculative bonds.. If a bond classified as speculative, for example, central banks need to sell them.
Critics, it often remains unclear how much of the credit ratings (ratings) is mathematics and which opinion. In the financial crisis, rating agencies have been pilloried: Because they extolling junk securities as safe investment, you complicit in the crisis was given