EconAir

THE ECONOMICS OF FINANCIAL MARKETS MARKET-MAKERS, BIASED INFORMATION, AND FORECASTS This tutorial will look at financial markets and how they actually function.  There are two general theories about how financial markets work. The first is the Efficient Market Theory, which assumes all decision-makers are rational – they have access to information, can analyze it, and make investment decisions. Strangely, a major conclusion is that investors cannot predict stock price movements, which are random. The second is Behavioral Finance, which assumes that investors are irrational – they have a number of biases and are influenced by the markets’ past behavior. Both theories based on this supposed distinction that “explain” financial price behavior are irrelevant. What is left out of theoretical models of financial markets is how financial markets actually operate. Between buyers (investors) and sellers (including issuers of new securities), there are market makers like brokerage firms, managed