1 1 ch11&12 – mba 566 efficient market hypothesis vs. behavioral finance market efficiency...
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11Ch11&12 – MBA 566
Efficient Market Hypothesis vs. Behavioral Finance
Market EfficiencyRandom walk versus market efficiency
Versions of market efficiency
Technical analysis vs. fundamental analysis
Predictors of future returns and market anomalies
Behavioral finance
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22Ch11&12 – MBA 566
Cumulative Abnormal Returns Around Takeover Attempts: Target Companies
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33Ch11&12 – MBA 566
Stock Price Reaction to CNBC Reports
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44Ch11&12 – MBA 566
Stock prices fully and accurately reflect publicly available information.Once information becomes available, market participants analyze it.Competition assures prices reflect information.What does competition mean here? -- page 351Is there a role for active portfolio management in an efficient market?
EMH and Competition
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55Ch11&12 – MBA 566
Weak
Semi-strong
Strong
See page 348.
Forms of the EMH
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66Ch11&12 – MBA 566
Technical Analysis - using prices and volume information to predict future prices.
Weak form efficiency & technical analysis
Chartist
Relative strength versus resistance levels
Fundamental Analysis - using economic and accounting information to predict stock prices.
Semi strong form efficiency & fundamental analysis
Types of Stock Analysis
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77Ch11&12 – MBA 566
Technical Analysis
Relative strength – page 349
Resistence levels – upper bound or
Support levels – lower bound
Whether a workable technical trading rule will continue to work in the future once it becomes publicly known?
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88Ch11&12 – MBA 566
Fundamental Analysis
Uses earnings and dividend prospects of the firm, expectations of future interest rates, and risk evaluation of the firm to determine proper stock prices.
Fundamental analysis is much beyond identifying well-run firms with good prospects. It is to identify companies better than every else’s estimate.
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99Ch11&12 – MBA 566
Active ManagementSecurity analysis
Timing
Passive ManagementBuy and Hold
Index Funds
Active or Passive Management
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1010Ch11&12 – MBA 566
Even if the market is efficient a role exists for portfolio management:
Appropriate risk level
Tax considerations
Other considerations
Market Efficiency & Portfolio Management
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1111Ch11&12 – MBA 566
Event studies
Assessing performance of professional managers
Testing some trading rule
Empirical Tests of Market Efficiency
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1212Ch11&12 – MBA 566
Magnitude Issue
Selection Bias Issue: investing in small stocks
Lucky Event Issue
Issues in Examining the Results
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1313Ch11&12 – MBA 566
Weak-Form Tests
Serial Correlation
Momentum
Returns over Long Horizons
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1414Ch11&12 – MBA 566
Predictors of Broad Market Returns
Fama and FrenchAggregate returns are higher with higher dividend ratios
Campbell and ShillerEarnings yield can predict market returns
Keim and StambaughBond spreads can predict market returns
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1515Ch11&12 – MBA 566
P/E Effect
Small Firm Effect (January Effect)
Neglected Firm
Book-to-Market Effects
Post-Earnings Announcement Drift
Anomalies
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1616Ch11&12 – MBA 566
Returns in Excess of Risk-Free Rate and in excess of the Security Market Line for 10 Size-Based Portfolios, 1926 – 2005
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1717Ch11&12 – MBA 566
Average Monthly Returns as a Function of the Book-To Market Ratio, 1963 – 2004
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1818Ch11&12 – MBA 566
Cumulative Abnormal Returns in Response to Earnings Announcements
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1919Ch11&12 – MBA 566
Some evidence of persistent positive and negative performance.
Potential measurement error for benchmark returns.
Style changes
May be risk premiums
Mutual Fund Performance
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2020Ch11&12 – MBA 566
Persistence of Mutual Fund Performance
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2121Ch11&12 – MBA 566
Behavioral Finance
The premise of behavioral finance is that conventional financial theory ignores how real people make decisions and that people make a difference.
Investors Do Not Always Process Information Correctly
Investors Often Make Inconsistent or Systematically Suboptimal Decisions
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2222Ch11&12 – MBA 566
Behavioral Biases
FramingDecisions seem to be affected by how choices are framed – page 387example
Mental AccountingA special form of framing in which people segregate certain decisionsexample
Regret AvoidanceIndividuals would have more regrets when their decisions are more unconventionalexample
Prospect TheoryTraders become risk seeking after they lose money
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2323Ch11&12 – MBA 566
Prospect Theory Graphs
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2424Ch11&12 – MBA 566
Limits to Arbitrage
Fundamental Risk
Implementation Costs
Model Risk
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2525Ch11&12 – MBA 566
Limits to Arbitrage and the Law of One Price
ViolationsSiamese Twin Companies
Equity Carve-outs
Closed-End Funds
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2626Ch11&12 – MBA 566
Trend and Corrections
Dow theory – page 397 Primary trendSecondary/intermediate trend Tertiary or minor trends
Moving averageTypically 200 days or 53 weeksBullish versus bearish – page 398
Breadth – page 400Advances versus declines – page 401
Sentiment indicatorTrin statisticConfidence indexPut-call ratio