Exercise or strike price – the price stated in the option contract at which the security can be bought or sold.. Exercise value – the value of an option if it were exercised today C
Trang 2Are stockholders concerned about
whether or not a firm reduces the
volatility of its cash flows?
Not necessarily.
If cash flow volatility is due to
systematic risk, it can be eliminated
by diversifying investors’ portfolios.
Trang 3Reasons that corporations
engage in risk management
Increase their use of debt
Maintain their optimal capital budget
Avoid financial distress costs
Utilize their comparative advantages in
hedging, compared to investors
Reduce the risks and costs of borrowing
Reduce the higher taxes that result from
fluctuating earnings
Initiate compensation programs to reward
managers for achieving stable earnings
Trang 4What is an option?
A contract that gives its holder the
right, but not the obligation, to buy (or sell) an asset at some predetermined
price within a specified period of time.
Most important characteristic of an
option:
It does not obligate its owner to take
action
Trang 5Option terminology
Call option – an option to buy a specified
number of shares of a security within some
future period.
Put option – an option to sell a specified number
of shares of a security within some future
period.
Exercise (or strike) price – the price stated in
the option contract at which the security can be bought or sold.
Option price – the market price of the option
Trang 6Option terminology
Expiration date – the date the option matures.
Exercise value – the value of an option if it were exercised today (Current stock price - Strike
Trang 7Option terminology
In-the-money call – a call option whose
exercise price is less than the current price of the underlying stock.
Out-of-the-money call – a call option whose
exercise price exceeds the current stock price.
LEAPS: Long-term Equity AnticiPation
Securities are similar to conventional options
except that they are long-term options with
maturities of up to 2 1/2 years.
Trang 9Determining option exercise value and option premium
Stock Strike Exercise Option Option
price price value price premium
Trang 10How does the option premium
change as the stock price increases?
The premium of the option price over
the exercise value declines as the stock
price increases
This is due to the declining degree of
leverage provided by options as the
underlying stock price increases, and the
greater loss potential of options at
higher option prices
Trang 11Call premium diagram
5 10 15 20 25 30 35 40 45 50
Stock Price
Trang 12What are the assumptions of the
Black-Scholes Option Pricing Model?
The stock underlying the call option
provides no dividends during the call
option’s life
There are no transactions costs for the
sale/purchase of either the stock or the
Trang 13What are the assumptions of the
Black-Scholes Option Pricing Model?
No penalty for short selling and
sellers receive immediately full cash
proceeds at today’s price.
Call option can be exercised only on
its expiration date.
Security trading takes place in
continuous time, and stock prices
move randomly in continuous time.
Trang 14Which equations must be solved to find the Black-Scholes option price?
)]
[N(d Xe
)]
-P[N(d
V
t σ
d
2
t k
1
-1 2
+
=
Trang 15Use the B-S OPM to find the option value
of a call option with P = $27, X = $25,
kRF = 6%, t = 0.5 years, and σ2 = 0.11.
0.6327 0.1327
0.5000 N(0.3391)
)
N(d
0.7168 0.2168
0.5000 N(0.5736)
)
N(d
textbook the
in 5 - A Table
From
0.3391 7071)
(0.3317)(0 -
0.5736
d
0.5736 7071)
=
=
= +
=
Trang 16Solving for option value
$4.0036
V
[0.6327]
$25e -
)]
-P[N(d
V
) (0.06)(0.5 -
Trang 17How do the factors of the B-S
OPM affect a call option’s value?
As the factor increases … Option value …
Current stock price Increases
Exercise price Decreases
Time to expiration Increases
Risk-free rate Increases
Stock return variance Increases
Trang 18What is corporate risk management, and why is it important to all firms?
Corporate risk management relates to the
management of unpredictable events that would have adverse consequences for the firm
All firms face risks, but the lower those
risks can be made, the more valuable the
firm, other things held constant Of
course, risk reduction has a cost
Trang 19Definitions of different types
of risk
Speculative risks – offer the chance of a gain
as well as a loss
Pure risks – offer only the prospect of a loss
Demand risks – risks associated with the
demand for a firm’s products or services
Input risks – risks associated with a firm’s
input costs
Financial risks – result from financial
transactions
Trang 20Definitions of different types
of risk
Property risks – risks associated with loss
of a firm’s productive assets
Personnel risk – result from human
actions
Environmental risk – risk associated with
polluting the environment
Liability risks – connected with product,
service, or employee liability
Insurable risks – risks that typically can be
Trang 21What are the three steps of
corporate risk management?
1. Identify the risks faced by the firm.
2. Measure the potential impact of the
identified risks.
3. Decide how each relevant risk
should be handled.
Trang 22What can companies do to
minimize or reduce risk exposure?
Transfer risk to an insurance company by
paying periodic premiums.
Transfer functions that produce risk to third
parties.
Purchase derivative contracts to reduce input
and financial risks.
Take actions to reduce the probability of
occurrence of adverse events and the
magnitude associated with such adverse events.
Trang 23What is financial risk exposure?
Financial risk exposure refers to the
risk inherent in the financial markets due to price fluctuations.
Example: A firm holds a portfolio of bonds, interest rates rise, and the
value of the bond portfolio falls.
Trang 24Financial Risk Management
Concepts
Derivative – a security whose value is
derived from the values of other assets
Swaps, options, and futures are used to
manage financial risk exposures
Futures – contracts that call for the purchase
or sale of a financial (or real) asset at some future date, but at a price determined today Futures (and other derivatives) can be used
Trang 25Financial Risk Management
Short hedge – involves the sale of a futures
contract to protect against a price decline.
Swaps – the exchange of cash payment
obligations between two parties, usually
because each party prefers the terms of the other’s debt contract Swaps can reduce
each party’s financial risk
Trang 26How can commodity futures markets
be used to reduce input price risk?
The purchase of a commodity futures contract will allow a firm to make a
future purchase of the input at
today’s price, even if the market
price on the item has risen
substantially in the interim.