Chapter 3 – Valuation
In order to make the ideas in the chapter concrete, the chapter text focuses on the
case of one particular firm, the Internet auction firm eBay. In this respect, the discussion
eBay, dated April 2003. This report serves to illustrate some of the major points
discussed in the chapter. The eBay case was originally written for the first edition of the
book. An important feature of the second edition is that it focuses on the subsequent ten
years more than ten years, thereby providing a sense of how to judge the behavioral
assessment made in the first edition.
The discussion of biases inevitably raises questions about market efficiency. At
this stage, discussions of market efficiency should be limited. What instructors should
stress in the present chapter, first and foremost, is the degree to which managers and
the valuations associated with textbook techniques. Instructors should be careful to be
clear about the benchmark used to assess bias, and whether the variable under discussion
is a current price, the forecast of a future price, or the forecast of a future return.
The discussion of bias in respect to returns will touch on whether managers or