Market Efficiency and Behavioral Finance Flashcards
CH 9
abnormal return
The difference between an investment’s actual return and its expected return. (Chapter 9)
alpha
An investment’s abnormal return, equal to the difference between its actual return and its expected return. (Chapter 9)
anchoring
A phenomenon in which individuals place too much weight on information that they have at hand, even when that information is not particularly relevant. (Chapter 9)
arbitrage
A phenomenon in which individuals place too much weight on information that they have at hand, even when that information is not particularly relevant. (Chapter 9)
arbitrage
A transaction in which an investor simultaneously buys and sells identical assets at different prices to earn an instant, risk-free profit. (Chapter 9)
behavioral finance
The body of research into the role that emotions and other subjective factors play in investment decisions. (Chapter 9)
belief perseverance
The tendency to ignore or discount evidence contrary to one’s existing beliefs. (Chapter 9)
charting
The activity of charting price behavior and other market information and then using the patterns these charts form to make investment decisions. (Chapter 9)
confidence index
A ratio of the average yield on high-grade corporate bonds to the average yield on average-or intermediate-grade corporate bonds; a technical indicator based on the theory that market trends usually appear in the bond market before they do in the stock market. (Chapter 9)
efficient market
A market in which securities reflect all possible information quickly and accurately. (Chapter 9)
efficient markets hypothesis (EMH)
Basic theory of the behavior of efficient markets, in which there are a large number of knowledgeable investors who react quickly to new information, causing securities prices to adjust quickly and accurately. (Chapter 9)
familiarity bias
The tendency to invest in securities simply because they are familiar to the investor. (Chapter 9)
loss aversion
A situation in which the desire to avoid losses is so great that investors who are otherwise risk-averse will exhibit risk-seeking behavior in an attempt to avoid a loss. (Chapter 9)
market anomalies
Irregularities or deviations from the behavior one would expect in an efficient market. (Chapter 9)
market technicians
Analysts who believe it is chiefly (or solely) supply and demand that drive stock prices. (Chapter 9)
moving average (MA)
A mathematical procedure that computes and records the average values of a series of prices, or other data, over time; results in a stream of average values that will act to smooth out a series of data. (Chapter 9)
narrow framing
Analyzing an investment problem in isolation or in a particularly narrow context rather than looking at all aspects of the problem. (Chapter 9)
overconfidence
The tendency to overestimate one’s ability to perform a particular task. (Chapter 9)
random walk hypothesis
The theory that stock price movements are unpredictable, so there’s no way to know where prices are headed. (Chapter 9)
representativeness
Cognitive biases that occur because people have difficulty thinking about randomness in outcomes. (Chapter 9)
self-attribution bias
The tendency to overestimate the role that one’s intelligence or skill plays in bringing about a favorable investment result and to underestimate the role of chance in that result. (Chapter 9)
semi-strong form (EMH)
Form of the EMH holding that abnormally large profits cannot be consistently earned using publicly available information. (Chapter 9)
short interest
The number of stocks sold short in the market at any given time; a technical indicator believed to indicate future market demand. (Chapter 9)
strong form (EMH)
Form of the EMH that holds that there is no information, public or private, that allows investors to consistently earn abnormal profits. (Chapter 9)
technical analysis
The study of the various forces at work in the marketplace and their effect on stock prices. (Chapter 9)
theory of contrary opinion
A technical indicator that uses the amount and type of odd-lot trading as an indicator of the current state of the market and pending changes. (Chapter 9)
Small-firm effect
(size effect)
Small firms can earn positive abnormal returns of as much as 5% to 6% per year.
Relative Strength Index
RSI
measures the strength of advances and declines over short time periods. High RSI values indicate a stock is overbought, and low values indicate a possible oversold security.
common technical measures of momentum