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Finance Theory
Foundations of Finance
01Defining Finance and the Financial System02Valuation and Management: The Two Challenges03Stocks, Flows, and the Five Cash-Flow Decisions04Time, Risk, and the Six Principles of Finance05How to Learn Finance: Practice and Study HabitsProblem set0/10Problem set 20/10
Present Value
01Information and Price: An Auction and Fannie Mae02Who Pays for the Fannie and Freddie Guarantee?03What Counts as an Asset: Patents, Secrets, Brands04An Asset as a Sequence of Dated Cashflows05The Value Operator and the Cashflow Timeline06Dates as Currencies: Building Net Present Value07Discount Factors: Market Prices for Future Dollars08A Worked Net Present Value and Its Assumptions09The Opportunity Cost of Capital and Present ValueProblem set0/10Problem set 20/10MIT problem set0/5
01Does the Currency Change an NPV's Sign?02Moral Hazard and Contagion: Where Bailouts Stop03The NPV Rule at Work, and Choosing the Rate04The Perpetuity: Why Cash Forever Is Worth C/r05Reading the Rate Off a Perpetuity's Price06The Growing Perpetuity, and When Growth Outruns r07Building the Annuity from Two Perpetuities08The Annuity Discount Factor and Mortgage Payments09APR, the Effective Annual Rate, and CompoundingProblem set0/10Problem set 20/10MIT problem set0/13
01Leverage: How a 10% Fall Becomes a 200% Loss02Who Absorbs the Loss: Walking Away, Rate Cuts, Bailouts03Last in Line: Chapter 11 and How Lehman's Equity Hit Zero04Inflation vs. Time Value: Wealth and the Price Index05Real Returns: Match the Discount Rate to the CashflowProblem set0/10Problem set 20/10MIT problem set0/7
Fixed-Income Securities
01Fixed Income: How Treasuries Overtook Mortgage Debt02Why Dealers Break When Everyone Sells: 1987 and 200803Pricing a Coupon Bond: Why It Trades at Par04Zero-Coupon Bonds, STRIPS, and the Forecast in a PriceProblem set0/10Problem set 20/10MIT problem set0/6
01Credit, Not Cost: Why the Fed Held Rates and Saved AIG02Spot Rates and the Term Structure from Strips Prices03Flight to Quality, and the Rates the Fed Cannot Set04Forward Rates: Locking In Next Year's Rate Today05Hedging with Forward Rates and Quoting a Forward Loan06Yield to Maturity: Many Spot Rates in One Number07Reading the Treasury Yield Curve: 1981 to 202608Yield Curve Theories and Pricing Bonds by ArbitrageProblem set0/10Problem set 20/10MIT problem set0/8
01Breaking the Buck: The Money-Fund Run into T-Bills02The Law of One Price: Same Cash Flows, Same Price03Why Arbitrage Needs Short Selling: The 2008 Ban04Fixed-Income Arbitrage: No Solution Means a Trade05Duration: How Far a Bond's Price Moves with Yield06Convexity: The Bend That Duration MissesProblem set0/10Problem set 20/10MIT problem set0/7
01September 2008: Rising Yields and Forced Bank Mergers02Default Risk and Credit Ratings: When Debt Acts Like Equity03The Credit Spread: Default Premium, Risk Premium, Securitization04Tranching: How Two Risky Bonds Make a Triple-A Claim05Correlated Defaults: How the Triple-A Tranche Broke06Where the Money Went: Ratings, Winners and TARPProblem set0/10Problem set 20/10MIT problem set0/1
Common Stock
01What a Share Is: Residual Claim, Limited Liability, Votes02Primary vs Secondary Markets: IPOs and Trading Volume03Deriving the Dividend Discount Model04The Market, Not the Company, Sets the Discount Rate05Backing Out a Discount Rate from an Auction Bid06The Gordon Growth Model and Why Prices Explode Near r = g07Cost of Capital: r = D/P + g08Multi-Stage Dividend Valuation and Dividend PolicyProblem set0/10Problem set 20/10MIT problem set0/7
Forwards and Futures
01Mark to Market, Currency Risk, and Why Firms Hedge02Should a Firm Hedge? Irrelevance vs Financial Distress03The Forward Contract: Forward Price, Spot Price, and Payoffs04Why a Forward Is Worth Zero at Signing, and What F Forecasts05Buy Forward or Buy Now and Store? Features of a Forward06Counterparty Risk: The Soybean Forward That Fails07From Forward to Futures: Settling Gains and Losses Daily08Clearing Houses and Margin Accounts: How Futures Stay SafeProblem set0/10Problem set 20/10
01Marking to Market: Daily Settlement on a Futures Position02Futures vs Forwards: Credit Risk, Closing Out and Netting03Pricing a Forward by Replication: The Cost of Carry04Cost of Carry in Practice: Gold, Gasoline and Stock Indexes05A Synthetic Index Fund Built from S&P 500 Futures06Hedging 25% of a Portfolio with Short Index Futures07Futures Leverage, Margin Risk and What Prices RevealProblem set0/10Problem set 20/10
Options
01Calls and Puts: The Right Without the Obligation02A Put Option Is Insurance on Your Stock03Option Payoff Diagrams: The Kink and the Premium04Writing Options and the Straddle: A Bet on Volatility05Call Spreads, Butterflies and the VIX06Equity Is a Call Option: Options in Capital Structure07Cardano to Bachelier: Fair Games, Random Walks and the Heat Equation08Black, Scholes and Merton: Why Option Prices Ignore Risk PreferencesProblem set0/10Problem set 20/10
01The One-Period Binomial Model: Six Inputs to an Option Price02Replicating a Call With Stock and Bonds: Why p Drops Out03The Binomial Price as a Risk-Neutral Expectation04From the Binomial Tree to Black-Scholes05Calibrating u and d: Volatility Raises the Call's ValueProblem set0/10Problem set 20/10
Risk and Return
01Returns, the Risk Premium, and Standard Deviation02Correlation, the Normal Curve, and Fat Tails03Randomness: The Signature of an Efficient Market04Real Rates and the Risk-Return Tradeoff, 1946–200105Stock Returns: Unpredictable Over Time, Correlated Across Stocks06Size, January, Value, Momentum: Anomalies Out of Sample07Why Most Mutual Funds Trail the IndexProblem set0/10Problem set 20/10
Portfolio Theory
01Portfolio Weights, Short Sales and Buying on Margin02130/30 Funds, a Leveraged Home and Zero-Investment Portfolios03Why Hold a Portfolio? Diversification, Mean and Variance04The Risk-Return Graph: Why Investors Head NorthwestProblem set0/10Problem set 20/10
01Portfolio Variance: Why Risk Lives in the Covariances02Two Stocks, One Covariance: The Risk-Return Bullet03Estimating Means and Covariances: How Much History?04How Correlation Bends the Bullet, from +1 to −105Mixing In T-Bills: A Straight Line and Leverage06Average Covariance, and Why Correlations Jump07The Limit of Diversification: Systematic Risk08Three Stocks, One Bullet: Long Horizons and EquilibriumProblem set0/10Problem set 20/10
01Never Hold One Stock: Three-Stock Frontiers and Why Stocks Co-Move02The Tangency Portfolio: Why Every Investor Holds the Same Stocks03The Sharpe Ratio: Lending, Borrowing and the Steepest Line04The Stock Nobody Can Find: Negative Correlation and Alpha05Indifference Curves and the Four Conclusions of Portfolio TheoryProblem set0/10Problem set 20/10
The CAPM
01Why Everyone's Fund Must Be the Market Portfolio02From the Capital Market Line to Beta and the CAPM03The Security Market Line: Betas of One, Zero and Below Zero04Portfolio Beta Is a Weighted Average: Microsoft vs Gillette05Alpha: Same Return, Same Volatility, Different Beta06Hedge Fund Alpha or Hidden Beta? Fund XYZ's 771 Basis Points07Systematic vs Idiosyncratic Risk: Why Only Beta Is Paid08Testing the CAPM: Is Alpha Zero? Biogen vs MotorolaProblem set0/10Problem set 20/10MIT problem set0/1
01Testing the CAPM with Portfolios: Size, Beta and a Flatter Line02Paid for Beta, Not Volatility: Multiple Factors and EquilibriumProblem set0/5Problem set 20/5
Capital Budgeting
01The NPV Rule and Investment Criteria for Capital Budgeting02Building Project Cash Flows: Cash, After Tax, Incremental03After-Tax Cash Flow and the Depreciation Tax Shield04Project Discount Rates: The Pure-Play Beta for Bloomberg Press05Synergies, Firm-Wide Cost of Capital and Moving Discount Rates06Oil Exploration: Two Risks, Two Discount RatesProblem set0/10Problem set 20/10MIT problem set0/2
01Payback and Discounted Payback: Flaws and Defensible Uses02The Profitability Index: Right Sign, Wrong Size03Scale and NPV: Why Firms Budget in Dollars, Not Returns04IRR as Yield to Maturity: Four Conditions, Loans and No IRR05Multiple IRRs, Scale and Timing: Why IRR Can't Rank Projects06What Firms Use: Survey Evidence and Six Capital Budgeting Rules07Descartes' Rule of Signs for IRR, and the Politics NPV Leaves OutProblem set0/10Problem set 20/10
Efficient Markets
01Market Efficiency: How Stocks Found the Challenger Culprit02Behavioral Finance: Loss Aversion and Ambiguity Aversion03Risk Versus Uncertainty: Knight, Ellsberg and the Gorilla04The Dutch Book Theorem: Inconsistent Beliefs Create Arbitrage05Emotion and Rationality: Damasio's Patient and the Triune Brain06Stress and Decisions: Fear, Pain and Unstable Preferences07The Adaptive Markets Hypothesis: Efficiency Most of the TimeProblem set0/10Problem set 20/10
01Adaptive Markets: Why the Risk Premium Changes Over Time02Cycles of Efficiency: 130 Years of S&P Serial Correlation03Pain Protects: Profits as an Anesthetic, and the Case for Regulation04After 2008: Innovation, Evolution and Better Regulation05Course Summary I: Six Principles and Present Value Pricing06Course Summary II: Risk, the CAPM and When to Trust PricesProblem set0/10Problem set 20/10MIT problem set0/7

Estimating Means and Covariances: How Much History?

If more history means a better estimate, why can't you just use fifty years of GM's returns?


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Your summary note

    1. 1

      The historical covariance estimator σ^ij\hat{\sigma}_{ij}σ^ij​

      Write σ^ij=1T∑t(Rit−μ^i)(Rjt−μ^j)\hat{\sigma}_{ij} = \frac{1}{T}\sum_t (R_{it} - \hat{\mu}_i)(R_{jt} - \hat{\mu}_j)σ^ij​=T1​∑t​(Rit​−μ^​i​)(Rjt​−μ^​j​) and record which quantities are estimated from data and which are chosen.

    2. 2

      Estimation error versus non-stationarity

      Record the trade-off in sample length, using GM's 2009 bankruptcy and Motorola's 2011 split as examples, and the problem with choosing a full cycle such as Kondratiev's.

    3. 3

      Stable parameters, not forecasts

      State the narrow claim that expected returns and covariances are stable, and contrast portfolio construction with Buffett's approach of picking undervalued stocks to beat the market.

    Attempt 1 of 2