Trade is a field that is concerned with the allocation (investment) of assets and liabilities (known as elements of the balance statement) over space and time, often under conditions of risk or uncertainty. Finance can also be defined as the science of money management.Personal finance may involve paying for education, financing durable goods such as real estate and cars, buying insurance, e.g. health and property insurance, investing and saving for retirement. Market participants aim to price assets based on their risk level, fundamental value, and their expected rate of return.