Financial economics is the branch of economics concerned with “the allocation and deployment of economic resources, both spatially and across time, in an uncertain environment”. It is additionally characterised by its “concentration on monetary activities”, in which “money of one type or another is likely to appear on both sides of a trade”. The questions within financial economics are typically framed in terms of “time, uncertainty, options and information”.

• Time: money now is traded for money in the future.
• Uncertainty (or risk): The amount of money to be transferred in the future is uncertain.
• Options: one party to the transaction can make a decision at a later time that will affect subsequent transfers of money.
• Information: knowledge of the future can reduce, or possibly eliminate, the uncertainty associated with future monetary value (FMV).

The subject is usually taught at a postgraduate level; see Master of Financial Economics.

Financial economics is the branch of economics studying the interrelation of financial variables, such as prices, interest rates and shares, as opposed to those concerning the real economy. Financial economics concentrates on influences of real economic variables on financial ones, in contrast to pure finance.

It studies:

• Valuation - Determination of the fair value of an asset
  • How risky is the asset? (identification of the asset appropriate discount rate)
  • What cash flows will it produce? (discounting of relevant cash flows)
  • How does the market price compare to similar assets? (relative valuation)
  • Are the cash flows dependent on some other asset or event? (derivatives, contingent claim valuation)

• Financial markets and instruments
  • Commodities - topics
  • Stocks - topics
  • Bonds - topics
  • Money market instruments- topics
  • Derivatives - topics

• Financial institutions and regulation

Financial Econometrics is the branch of Financial Economics that uses econometric techniques to parameterise the relationships.