Midterm 2 (Last Deck) Flashcards
Market Anomalies
Techniques or strategies that appear to be contrary to an efficient market
Data Mining
The search for apparent patterns in stock returns by intensively analyzing data
Weak form market efficiency
All past-price information is fully reflected in stock prices. Implies that technical analysis is not useful.
Semi-strong form market efficiency
All public information is fully reflected in stock prices. Implies that fundamental analysis is not useful.
Strong form market efficiency
All information is reflected in stock prices. Implies that insider trading should not be profitable.
Abnormal returns
The difference between the average actual return and the expected return.
Bubble
An increase in the price of an asset above its fundamental value due to expectations of future increases and “irrational exuberance”
Momentum
Stock price behavior reflecting positive serial correlation
Mean Revision
Stock price behavior reflecting negative serial correlation
Random Walk
Stock price behavior reflecting no serial correlation. The efficient market hypothesis implies that stock prices follow a random walk.
In-Sample vs. Out-of-Sample
In-sample refers to the data used to determine the trading rule. Out-of-sample refers to the data used to test the trading rule after it has been determined.
Back-testing
Evaluating a trading rule by seeing how it performed when applied to historical data.