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CORPORATE FINANCIAL THEORY Lecture 10
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Derivatives Insurance Risk Management Lloyds Ship Building Jet Fuel Cost Predictability Revenue Certainty
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Stocks (example) Bonds Indices Commodities (examples for metal and ag.) Currencies Weather Carbon emissions Radio bandwidth Underlying Assets
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Arbitrage Speculation Hedging Derivative Uses
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Derivatives are financial instruments whose price and value derive from the value of the underlying assets or other variables (ISDA) Derivatives are a “zero sum game” Example: Insurance Derivatives Definition
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Derivatives & Options Historical Topics (Internal to the Corp) 1 - Capital Budgeting (Investment) 2 - Capital Structure (Financing) Today We are leaving Internal Corporate Finance We are going to Wall St & “Capital Markets” Options - financial and corporate Options are a type of derivative
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Options
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Terminology Derivatives - Any financial instrument that is derived from another. (e.g.. options, warrants, futures, swaps, etc.) Option - Gives the holder the right to buy or sell a security at a specified price during a specified period of time. Call Option - The right to buy a security at a specified price within a specified time. Put Option - The right to sell a security at a specified price within a specified time. Option Premium - The price paid for the option, above the price of the underlying security. Intrinsic Value - Diff between the strike price and the stock price Time Premium - Value of option above the intrinsic value
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Options Terminology Exercise Price - (Striking Price) The price at which you buy or sell the security. Expiration Date - The last date on which the option can be exercised. American Option - Can be exercised at any time prior to and including the expiration date. European Option - Can be exercised only on the expiration date. All options “usually” act like European options because you make more money if you sell the option before expiration (vs. exercising it). 3 vs. 70-68=2
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Option Value The value of an option at expiration is a function of the stock price and the exercise price.
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Option Value The value of an option at expiration is a function of the stock price and the exercise price. Example - Option values given a exercise price of $85
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Options CBOE Success 1 - Creation of a central options market place. 2 - Creation of Clearing Corp - the guarantor of all trades. 3 - Standardized expiration dates - 3rd Friday 4 - Created a secondary market
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Option Value Components of the Option Price 1 - Underlying stock price 2 - Striking or Exercise price 3 - Volatility of the stock returns (standard deviation of annual returns) 4 - Time to option expiration 5 - Time value of money (discount rate)
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Black-Scholes Option Pricing Model Option Value
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O C - Call Option Price P - Stock Price N(d 1 ) - Cumulative normal density function of (d 1 ) PV(EX) - Present Value of Strike or Exercise price N(d 2 ) - Cumulative normal density function of (d 2 ) r - discount rate (90 day comm paper rate or risk free rate) t - time to maturity of option (as % of year) v - volatility - annualized standard deviation of daily returns Black-Scholes Option Pricing Model
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N(d 1 )= Black-Scholes Option Pricing Model
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Cumulative Normal Density Function
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Call Option Example What is the price of a call option given the following? P = 36r = 10%v =.40 EX = 40t = 90 days / 365
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.3070=.3 =.00 =.007
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Call Option Example What is the price of a call option given the following? P = 36r = 10%v =.40 EX = 40t = 90 days / 365
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Call Option Example What is the price of a call option given the following? P = 36r = 10%v =.40 EX = 40t = 90 days / 365
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Put - Call Parity Put Price = Call + EX - P - Carrying Cost + Div. or Put = Call + EX(e -rt )– P s - Carrying Cost + Div. Carrying cost = r x EX x t
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Put - Call Parity Example ABC is selling at $41 a share. A six month May 40 Call is selling for $4.00. If a May $.50 dividend is expected and r=10%, what is the put price? O P = O C + EX - P - Carrying Cost + Div. O P = 4 + 40 - 41 - (.10x 40 x.50) +.50 O P = 3 - 2 +.5 O p = $1.50
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Warrants & Convertibles Review Topics (not going over in class) Warrant - a call option with a longer time to expiration. Value a warrant as an option, plus factor in dividends and dilution. Convertible - Bond with the option to exchange it for stock. Value as a regular bond + a call option. Won’t require detailed valuation - general concept on valuation + new option calc and old bond calc.
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Option Strategies Option Strategies are viewed via charts. How do you chart an option? Stock Price Profit Loss
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Long Stock Bought stock @ Ps = 100 Option Strategies
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Long Call Bought Call @ Oc = 3 S=27 Ps=30
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Option Strategies Short Call Sold Call @ Oc = 3 S=27 Ps=30
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Option Strategies Long Put = Buy Put @ Op = 2 S=15 Ps=13
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Option Strategies Short Put = Sell Put @ Op = 2 S=15 Ps=13
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Option Strategies Synthetic Stock = Short Put & Long Call @ Oc = 1.50 Op=1.50 S=27 Ps=27 P/LPs 27 30 24 -1.50 +1.50
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Option Strategies Synthetic Stock = Short Put & Long Call @ Oc = 1.50 Op=1.50 S=27 Ps=27 P/LPs 27 30 24 -1.50 +1.50
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Option Strategies Synthetic Stock = Short Put & Long Call @ Oc = 1.50 Op=1.50 S=27 Ps=27
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Option Strategies Why? 1 - Reduce risk - butterfly spread 2 - Gamble - reverse straddle 3 - Arbitrage - as in synthetics Arbitrage - If the price of a synthetic stock is different than the price of the actual stock, an opportunity for profit exists. Recall discussion on Real Options
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Dilution
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Expanding the binomial model to allow more possible price changes 1 step 2 steps 4 steps (2 outcomes) (3 outcomes) (5 outcomes) etc. Binomial vs. Black Scholes
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