Deck 11: Properties of Stock Options

Question 1

When dividends increase with all else remaining the same,which of the following is true?

A) Both calls and puts increase in value
B) Both calls and puts decrease in value
C) Calls increase in value while puts decrease in value
D) Puts increase in value while calls decrease in value

Answer 1

D
Dividends during the life of an option reduce the final stock price.As a result dividend increases cause puts to increase in value and calls to decrease in value.

Question 2

When volatility increases with all else remaining the same,which of the following is true?

A) Both calls and puts increase in value
B) Both calls and puts decrease in value
C) Calls increase in value while puts decrease in value
D) Puts increase in value while calls decrease in value

Answer 2

A
Volatility increases the likelihood of a high payoff from either a call or a put option.The payoff can never be negative.It follows that as volatility increases the value of all options increase.

Question 3

Which of the following is NOT true? (Present values are calculated from the end of the life of the option to the beginning.)

A) An American put option is always worth less than the present value of the strike price
B) A European put option is always worth less than the present value of the strike price
C) A European call option is always worth less than the stock price
D) An American call option is always worth less than the stock price

Answer 3

A
If it is optimal to exercise an American option today and the stock price is very low the option will be worth more than the present value of the strike price

Question 4

A stock price (which pays no dividends)is $50 and the strike price of a two year European put option is $54.The risk-free rate is 3% (continuously compounded).Which of the following is a lower bound for the option such that there are arbitrage opportunities if the price is below the lower bound and no arbitrage opportunities if it is above the lower bound?

A) $4.00
B) $3.86
C) $2.86
D) $0.86

Question 5

Which of the following describes a situation where an American put option on a stock becomes more likely to be exercised early?

A) Expected dividends increase
B) Interest rates decrease
C) The stock price volatility decreases
D) All of the above

Question 6

The price of a stock,which pays no dividends,is $30 and the strike price of a one year European call option on the stock is $25.The risk-free rate is 4% (continuously compounded).Which of the following is a lower bound for the option such that there are arbitrage opportunities if the price is below the lower bound and no arbitrage opportunities if it is above the lower bound?

A) $5.00
B) $5.98
C) $4.98
D) $3.98

Question 7

A European call and a European put on a stock have the same strike price and time to maturity.At 10:00am on a certain day,the price of the call is $3 and the price of the put is $4.At 10:01am news reaches the market that has no effect on the stock price or interest rates,but increases volatilities.As a result the price of the call changes to $4.50.Which of the following is correct?

A) The put price increases to $6.00
B) The put price decreases to $2.00
C) The put price increases to $5.50
D) It is possible that there is no effect on the put price

Question 8

The price of a European call option on a non-dividend-paying stock with a strike price of $50 is $6.The stock price is $51,the continuously compounded risk-free rate (all maturities)is 6% and the time to maturity is one year.What is the price of a one-year European put option on the stock with a strike price of $50?

A) $9.91
B) $7.00
C) $6.00
D) $2.09

Question 9

Which of the following is true?

A) An American call option on a stock should never be exercised early
B) An American call option on a stock should never be exercised early when no dividends are expected
C) There is always some chance that an American call option on a stock will be exercised early
D) There is always some chance that an American call option on a stock will be exercised early when no dividends are expected

Question 10

The price of a European call option on a stock with a strike price of $50 is $6.The stock price is $51,the continuously compounded risk-free rate (all maturities)is 6% and the time to maturity is one year.A dividend of $1 is expected in six months.What is the price of a one-year European put option on the stock with a strike price of $50?

A) $8.97
B) $6.97
C) $3.06
D) $1.12

Question 11

Which of the following is true when dividends are expected?

A) Put-call parity does not hold
B) The basic put-call parity formula can be adjusted by subtracting the present value of expected dividends from the stock price
C) The basic put-call parity formula can be adjusted by adding the present value of expected dividends to the stock price
D) The basic put-call parity formula can be adjusted by subtracting the dividend yield from the interest rate

Question 12

When the strike price increases with all else remaining the same,which of the following is true?

A) Both calls and puts increase in value
B) Both calls and puts decrease in value
C) Calls increase in value while puts decrease in value
D) Puts increase in value while calls decrease in value

Question 13

Interest rates are zero.A European call with a strike price of $50 and a maturity of one year is worth $6.A European put with a strike price of $50 and a maturity of one year is worth $7.The current stock price is $49.Which of the following is true?

A) The call price is high relative to the put price
B) The put price is high relative to the call price
C) Both the call and put must be mispriced
D) None of the above

Question 14

Which of the following is the put-call parity result for a non-dividend-paying stock?

A) The European put price plus the European call price must equal the stock price plus the present value of the strike price
B) The European put price plus the present value of the strike price must equal the European call price plus the stock price
C) The European put price plus the stock price must equal the European call price plus the strike price
D) The European put price plus the stock price must equal the European call price plus the present value of the strike price

Question 15

When the stock price increases with all else remaining the same,which of the following is true?

A) Both calls and puts increase in value
B) Both calls and puts decrease in value
C) Calls increase in value while puts decrease in value
D) Puts increase in value while calls decrease in value

Question 16

When the time to maturity increases with all else remaining the same,which of the following is true?

A) European options always increase in value
B) The value of European options either stays the same or increases
C) There is no effect on European option values
D) European options are liable to increase or decrease in value

Question 17

Which of the following best describes the intrinsic value of an option?

A) The value it would have if the owner had to exercise it immediately or not at all
B) The Black-Scholes-Merton price of the option
C) The lower bound for the option's price
D) The amount paid for the option

Question 18

Which of the following can be used to create a long position in a European put option on a stock?

A) Buy a call option on the stock and buy the stock
B) Buy a call on the stock and short the stock
C) Sell a call option on the stock and buy the stock
D) Sell a call option on the stock and sell the stock

Question 19

Which of the following is true for American options?

A) Put-call parity provides an upper and a lower bound for the difference between call and put prices
B) Put call parity provides an upper bound but no lower bound for the difference between call and put prices
C) Put call parity provides a lower bound but no upper bound for the difference between call and put prices
D) There are no put-call parity results

Question 20

When interest rates increase with all else remaining the same,which of the following is true?

A) Both calls and puts increase in value
B) Both calls and puts decrease in value
C) Calls increase in value while puts decrease in value
D) Puts increase in value while calls decrease in value