Midterm Text Book Flashcards
2 implications of CAPM
1 market portfolio is efficient
2 risk premium on risky asset is proportional to its beta
4 assumptions of CAPM
1 investors are rational, mean variance optimizers
2 investors use identical input lists
3 all assets are publicly traded
4 investors can borrow/lend at risk free rate
4 other assumptions of CAPM
1 investors planning horizon is single period
2 all info is publicly available
3 no taxes
4 no transaction costs
Illiquid assets will be sold…
Below fair market value
Ri = E(Ri) + BF + ei
What does each stand for 5
Ri = excess return
E(Ri) = expected excess return
Bi= sensitivity of firm I to that factor
F = factor
Ei= no systemic components of returns
3 propositions of APT
1 security return can be described by factor model
2 there are sufficient securities to diversify away idiosyncratic risk
3 well functioning security markets don’t allow for persistence
Of arbitrage opportunities
Efficient market hypothesis
Stocks already reflect all available information
3 forms of EMH
1 weak
2 semi strong
3 strong
Weak form EMH
Stock prices reflect all info derived from examining market trading data
Weak form EMH: market trading data 3
1 history of past prices
2 trading volume
3 short interest
Strong form EMH
All publicly available info regarding prospects of firm is already
Reflected in stock price
Prospects of firm (semi strong EMH) 6
1 firms product line 2 quality of management 3 balance sheet composition 4 patents held 5 earnings forecasts 6 accounting practices
Strong form EMH
Stock prices reflect all info relevant to firm, even info only available to insiders
Anomaly: PE effect
Low PE stocks provide higher returns than high PE stocks
Anomaly: small firm in January effect
Small firms outperform large firms
Anomaly: neglected firm effect
Firms with less analyst coverage will earn higher return
Due to risk of limited information
Anomaly: book to market ratio
High book to market stocks outperform low book to market stocks
4 information processing errors
1 forecasting errors
2 overconfidence
3 conservatism
4 representativeness bias
Forecasting errors
Placing too much weight on recent experience compared to historical
Overconfidence
People overestimate their forecasts and abilities
Conservatism bias
Investors are too slow in updating their beliefs in response to new evidence
Representativeness bias
Not taking into account a large enough sample size to get a sense of the population
Prospect theory
React more strongly to loss than gains
3 limits of arbitrage
1 Siamese twin companies
2 equity carve outs
3 closed end funds
Limits of arbitrage: Siamese twin companies
Companies might take to long to reflect correct prices
Equity carve outs
3 com should have sold for more than Palm, all palm shares were already sold short
Closed end funds
Sell at wide discount or premium due to fees on investors and investor sentiment
6 key variables of domestic macro economy
1 GDP 2 unemployment rate 3 inflation 4 interest rates 5 budget deficit 6 sentiment