Financial_economics

Financial economics is the branch of economics concerned with resource allocation over time. It is further distinguished from other branches of economics by its "concentration on monetary activities", in which "money of one type or another is likely to appear on both sides of a trade" [1].

The questions addressed by the discipline are typically framed in terms of "time, uncertainty, options and information" [2].

• 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).

Subject matter

Given its scope, as above, financial economics tends to deal with the workings of financial markets, such as the stock market, and the financing of companies, and includes the following subject areas: Budgeting, saving, investing, borrowing, lending, insuring, hedging, diversifying, and asset management. Because the future is never known with certainty, a central concern of financial economics is the impact of uncertainty on resource allocation.

Financial economics thus attempts to answer questions such as:

• How are the prices of financial assets determined (stocks, bonds, currencies, and commodities)?
• What are the effects of a company choosing different methods of financing its operations, such as issuing shares or borrowing?
• What portfolio of assets should an investor hold in order to best meet his/her objectives?

Assumptions

Financial economics is based on many assumptions - chief amongst these, that financial decision makers are rational (see Homo economicus; Efficient market hypothesis). However, recently, researchers in Experimental economics and Experimental finance have challenged this assumption empirically. Further, these assumptions are challenged - theoretically - by Behavioral finance, a discipline primarily concerned with the rationality, or lack thereof, of economic agents.

Other common assumptions include market prices following a random walk, or asset returns being normally distributed. Empirical evidence suggests that these assumptions may not hold, and in practice, traders and analysts, and particularly risk managers, frequently modify the "standard models".

Important concepts

• Risk-free interest rate
• Time value of money
• Fisher separation theorem
• Modigliani-Miller theorem
• Arbitrage
• Rational pricing
• Efficient market theory
• Modern portfolio theory
• Yield curve
• Homo economicus
• Arrow-Debreu model

Finance journals

• Journal of Finance
• Review of Financial Studies
• Journal of Financial Economics
• Econometrica
• Financial Analysts Journal
• Journal of Investment Management

See also

• Finance
• Value investing
• Financial mathematics
• Financial engineering
• Financialization
• Mathematical economics
• Model (economics)
• Experimental economics
• Experimental finance
• Behavioral finance
• Bank of Sweden Prize in Economic Sciences

• lists
  • List of Economics Topics
  • List of Finance Topics
  • List of Economists

External links and references

Theory

• "Macro-Investment Analysis", Professor William Sharpe, Stanford Graduate School of Business
• Lecture Notes in Financial Economics, Antonio Mele, London School of Economics
• Great Moments in Financial Economics I, II, III; IVa; IVb. Prof. Mark Rubinstein, Haas School of Business

General

• Finance Theory, The History of Economic Thought Website, The New School
• The Scientific Evolution of Finance Prof. Don Chance, Prof. Pamela Peterson
• Great Ideas in Finance, riskmetrics.com
• A Short History of Investment Forecasting, Professor Michael Phillips, California State University, Northridge
• Pioneers of Finance, Prof. Larry Guin, Murray State University
• How Modern is Modern Portfolio Theory?, Peter L. Bernstein

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