In the United States, money market funds can be divided into three categories according to the level of risk. 　　 In the United States, money market funds can be divided into three categories according to the level of risk. 　　 1, Treasury bill money market funds, which invest mainly in treasury bills, marketable securities guaranteed by the government, etc. These securities generally have a maturity of less than one year, with an average maturity of 120 days. 　　 2,Diversified money market funds, which are commonly referred to as money market funds, usually invest in a variety of marketable securities such as commercial paper, treasury bills, securities issued by U.S. government agencies, negotiable certificates of deposit, bankers' acceptances, etc., which have similar maturities as the aforementioned funds. 　　 3, Tax-exempt money funds, which are used primarily for short-term financing of high-quality municipal securities, also include municipal medium-term bonds and municipal long-ter

A futures is a standardised tradable contract on a commodity or financial instrument. The underlying may be a commodity such as agricultural products, crude oil, gold or a financial instrument.

The unstable state of the market has been the ground on which Soros has tested his theory of contrarianism, arguing that financial markets are volatile and disorderly.

The differences between stock options and restricted stock lie in four areas: symmetry of rights and obligations, symmetry of rewards and penalties, waiting period versus confinement period and exercise price versus grant price.

A state of market instability is when the deviation between the expectations of market participants and the objective facts reaches an extreme state.

The difference between futures basis spreads and spreads.

Soros argues that the volatility of markets stems from the feeling that people have a biased and flawed perception of markets.

The bubble economy can be divided into three phases: the formation phase of the bubble, the inflation phase of the bubble and the collapse phase of the bubble. 

Shares to stop opening, stop closing, said the main pull pick up extremely strong, the market will be a big reversal, should quickly buy.

Today's game is very normal, when the market is lopsided there will be the opposite side.