Fight Finance

Question 947  arbitrage table, option, no explanation

A non-dividend paying stock has a current price of $20.

The risk free rate is 5% pa given as a continuously compounded rate.

Options on the stock are currently priced at $5 for calls and $5.55 for puts where both options have a 2 year maturity and an exercise price of $24.

You suspect that the call option contract is mis-priced and would like to conduct a risk-free arbitrage that requires zero capital. Which of the following steps about arbitraging the situation is NOT correct?

(a) The call option is over-priced and should be sold.

(b) One put option should be sold.

(c) One stock should be bought.

(d) A 2 year zero coupon bond with a face value at maturity of $24 should be sold.

(e) The gain now will be $1.1661 per option contract with zero cash flows in the future.

Question 956  option, Black-Scholes-Merton option pricing, delta hedging, hedging

A bank sells a European call option on a non-dividend paying stock and delta hedges on a daily basis. Below is the result of their hedging, with columns representing consecutive days. Assume that there are 365 days per year and interest is paid daily in arrears.

Delta Hedging a Short Call using Stocks and Debt
Description	Symbol	Days to maturity (T in days)
		60	59	58	57	56	55
Spot price ($)	S	10000	10125	9800	9675	10000	10000
Strike price ($)	K	10000	10000	10000	10000	10000	10000
Risk free cont. comp. rate (pa)	r	0.05	0.05	0.05	0.05	0.05	0.05
Standard deviation of the stock's cont. comp. returns (pa)	σ	0.4	0.4	0.4	0.4	0.4	0.4
Option maturity (years)	T	0.164384	0.161644	0.158904	0.156164	0.153425	0.150685
Delta	N[d1] = dc/dS	0.552416	0.582351	0.501138	0.467885	0.550649	0.550197
Probability that S > K at maturity in risk neutral world	N[d2]	0.487871	0.51878	0.437781	0.405685	0.488282	0.488387
Call option price ($)	c	685.391158	750.26411	567.990995	501.487157	660.982878	?
Stock investment value ($)	N[d1]*S	5524.164129	5896.301781	4911.152036	4526.788065	5506.488143	?
Borrowing which partly funds stock investment ($)	N[d2]*K/e^(r*T)	4838.772971	5146.037671	4343.161041	4025.300909	4845.505265	?
Interest expense from borrowing paid in arrears ($)	r*N[d2]*K/e^(r*T)		0.662891	0.704985	0.594994	0.551449	?
Gain on stock ($)	N[d1]*(SNew - SOld)		69.052052	-189.264008	-62.642245	152.062648	?
Gain on short call option ($)	-1*(cNew - cOld)		-64.872952	182.273114	66.503839	-159.495721	?
Net gain ($)	Gains - InterestExpense		3.516209	-7.695878	3.266599	-7.984522	?
Gamma	Γ = d^2c/dS^2	0.000244	0.00024	0.000255	0.00026	0.000253	0.000255
Theta	θ = dc/dT	2196.873429	2227.881353	2182.174706	2151.539751	2266.589184	2285.1895

 

In the last column when there are 55 days left to maturity there are missing values. Which of the following statements about those missing values is NOT correct?

(a) The call option price is expected to be $654.757851.

(b) The stock investment value used for hedging should be $5506.488143, partly funded by $4845.505265 in debt.

(c) The interest expense on the borrowing from the previous day will be $0.663813.

(d) The gain on the stock is zero and the gain on the short call option is $6.225027.

(e) The net gain is $5.561214.

Question 833  option, delta, theta, standard deviation, no explanation

Which of the following statements about an option (either a call or put) and its underlying stock is NOT correct?

(a) The option’s expected future continuously compounded returns are always more than or equal to the underlying stock’s expected future continuously compounded returns.

(b) The option’s standard deviation of dollar price changes is always less than or equal to the underlying stock’s standard deviation of dollar price changes.

(c) The option’s standard deviation of continuously compounded returns are always less than or equal to the underlying stock’s standard deviation of continuously compounded returns.

(d) As time elapses and the maturity date of an option approaches, its price will fall, all other things remaining equal.

(e) If the underlying stock’s price rises by $0.01, the call option’s price will rise by less than $0.01 and the put option’s price will fall by less than $0.01.

Question 643  future, no explanation

A trader buys one crude oil futures contract on the CME expiring in one year with a locked-in futures price of $38.94 per barrel. If the trader doesn’t close out her contract before expiry then in one year she will have the:

(a) Obligation to buy the underlying oil at $38.94 per barrel.

(b) Obligation to sell the underlying oil at $38.94 per barrel.

(c) Right to buy the underlying oil at $38.94 per barrel if she wants.

(d) Right to sell the underlying oil at $38.94 per barrel if she wants.

(e) Obligation to buy the underlying oil $38.94 per barrel if her counter party chooses to sell it.

Question 684  future, arbitrage, no explanation

An equity index stands at 100 points and the one year equity futures price is 102.

The equity index is expected to have a dividend yield of 4% pa. Assume that investors are risk-neutral so their total required return on the shares is the same as the risk free Treasury bond yield which is 10% pa. Both are given as discrete effective annual rates.

Assuming that the equity index is fairly priced, an arbitrageur would recognise that the equity futures are:

(a) Under priced and should be bought.

(b) Under priced and should be sold.

(c) Over priced and should be bought.

(d) Over priced and should be sold.

(e) Fairly priced and an arbitrageur would be indifferent to buying or selling them.

Question 586  option

Which one of the following statements about option contracts is NOT correct?

(a) Option premium is another name for option price.

(b) An option contract's price is always changing.

(c) Strike price is another name for exercise price.

(d) An option contract's strike price is always changing.

(e) Call and put option premiums are paid at the start when the option is bought. Call option exercise prices are paid when they are exercised, usually at maturity.

Question 584  option, option payoff at maturity, option profit

Which of the following statements about European call options on non-dividend paying stocks is NOT correct?

(a) A long call option's payoff at maturity is equal to the maximum of zero or the underlying asset price at maturity minus the exercise price. ##f_\text{T,LC} = max(S_T - K, 0)##

(b) A long call option's profit is equal to the payoff at maturity less the initial option price. ##\pi_\text{LC} = max(S_T - K, 0) - c_0##

(c) The breakeven price is the underlying asset price at which a long option contract gives zero profit. When ##max(S_T - K, 0) - c_0 = 0##, then ##S_T = K+c_0##.

(d) A call option's break-even price is always more than its strike price.

(e) Call options should only be exercised at maturity if the underlying asset price is above the break-even price.

Question 124  option, hedging

You operate a cattle farm that supplies hamburger meat to the big fast food chains. You buy a lot of grain to feed your cattle, and you sell the fully grown cattle on the livestock market.

You're afraid of adverse movements in grain and livestock prices. What options should you buy to hedge your exposures in the grain and cattle livestock markets?

Select the most correct response:

(a) Buy calls on grain, buy calls on cattle livestock.

(b) Buy calls on grain, buy puts on cattle livestock.

(c) Buy puts on grain, buy calls on cattle livestock.

(d) Buy puts on grain, buy puts on cattle livestock.

(e) Statements (a) and (d) are both correct.

Question 688  future, hedging

A pig farmer in the US is worried about the price of hogs falling and wants to lock in a price now. In one year the pig farmer intends to sell 1,000,000 pounds of hogs. Luckily, one year CME lean hog futures expire on the exact day that he wishes to sell his pigs. The futures have a notional principal of 40,000 pounds (about 18 metric tons) and currently trade at a price of 63.85 cents per pound. The underlying lean hogs spot price is 77.15 cents per pound. The correlation between the futures price and the underlying hogs price is one and the standard deviations are both 4 cents per pound. The initial margin is USD1,500 and the maintenance margin is USD1,200 per futures contract.

Which of the below statements is NOT correct?

(a) The pig farmer should sell futures to hedge against the danger of falling hog prices.

(b) The pig farmer should transact 30 lean hogs futures contracts with tailing since futures contracts require margins.

(c) The total initial margin that must be paid to the pig farmer’s futures broker is $45,000.

(d) If the futures price falls by more than 0.01175 cents per pound (rounded to 5 decimal places) then the pig farmer will receive a margin call from their broker.

(e) The future is trading in backwardation since the spot price exceeds the futures price, so the current basis is positive 13.30 cents.

Question 837  option, put call parity

Being long a call and short a put which have the same exercise prices and underlying stock is equivalent to being:

(a) Long a stock only.

(b) Long a stock and long a bond.

(c) Long a stock and short a bond.

(d) Short a stock and long a bond.

(e) Short a stock and short a bond.

Question 903  option, Black-Scholes-Merton option pricing, option on stock index

A six month European-style call option on the S&P500 stock index has a strike price of 2800 points.

The underlying S&P500 stock index currently trades at 2700 points, has a continuously compounded dividend yield of 2% pa and a standard deviation of continuously compounded returns of 25% pa.

The risk-free interest rate is 5% pa continuously compounded.

Use the Black-Scholes-Merton formula to calculate the option price. The call option price now is:

(a) 162.83 points

(b) 220.56 points

(c) 226.43 points

(d) 230.91 points

(e) 317.45 points

Question 904  option, Black-Scholes-Merton option pricing, option on future on stock index

A six month European-style call option on six month S&P500 index futures has a strike price of 2800 points.

The six month futures price on the S&P500 index is currently at 2740.805274 points. The futures underlie the call option.

The S&P500 stock index currently trades at 2700 points. The stock index underlies the futures. The stock index's standard deviation of continuously compounded returns is 25% pa.

The risk-free interest rate is 5% pa continuously compounded.

Use the Black-Scholes-Merton formula to calculate the option price. The call option price now is:

(a) 226.43 points

(b) 220.56 points

(c) 176.21 points

(d) 162.83 points

(e) 128.92 points

Question 785  fixed for floating interest rate swap, non-intermediated swap

The below table summarises the borrowing costs confronting two companies A and B.

Bond Market Yields
	Fixed Yield to Maturity (%pa)	Floating Yield (%pa)
Firm A	3	L - 0.4
Firm B	5	L + 1

 

Firm A wishes to borrow at a floating rate and Firm B wishes to borrow at a fixed rate. Design a non-intermediated swap that benefits firm A only. What will be the swap rate?

(a) 2% pa.

(b) 2.6% pa.

(c) 3.4% pa.

(d) 4% pa.

(e) 4.6% pa.

Question 670  fixed for floating interest rate swap

A company can invest funds in a five year project at LIBOR plus 50 basis points pa. The five-year swap rate is 4% pa. What fixed rate of interest can the company earn over the next five years by using the swap?

(a) 0% pa

(b) 3.5% pa

(c) 4% pa

(d) 4.5% pa

(e) 5% pa

Question 779  mean and median returns, return distribution, arithmetic and geometric averages, continuously compounding rate

Fred owns some BHP shares. He has calculated BHP’s monthly returns for each month in the past 30 years using this formula:

###r_\text{t monthly}=\ln⁡ \left( \dfrac{P_t}{P_{t-1}} \right)###

He then took the arithmetic average and found it to be 0.8% per month using this formula:

###\bar{r}_\text{monthly}= \dfrac{ \displaystyle\sum\limits_{t=1}^T{\left( r_\text{t monthly} \right)} }{T} =0.008=0.8\% \text{ per month}###

He also found the standard deviation of these monthly returns which was 15% per month:

###\sigma_\text{monthly} = \dfrac{ \displaystyle\sum\limits_{t=1}^T{\left( \left( r_\text{t monthly} - \bar{r}_\text{monthly} \right)^2 \right)} }{T} =0.15=15\%\text{ per month}###

Assume that the past historical average return is the true population average of future expected returns and the stock's returns calculated above ##(r_\text{t monthly})## are normally distributed. Which of the below statements about Fred’s BHP shares is NOT correct?

(a) The returns ##r_\text{t monthly}## are continuously compounded monthly returns.

(b) The mean, median and mode of the continuously compounded annual return is expected to equal 0.8% per month.

(c) The annualised average continuously compounded return is ##\bar{r}_\text{cc annual}=12×0.008=0.096=9.6\%\text{ pa}##. The annualised standard deviation is ##\sigma_\text{annual} = \sqrt{12}×0.15=0.519615242 = 52\%\text{ pa}##.

(d) If the current price of the BHP shares is $20, they're expected to have a median value of $52.2339 ##(= 20×e^{0.008×12×10})## in 10 years.

(e) If the current price of the BHP shares is $20, they're expected to have a mean value of $13.5411 ##(= 20×e^{(0.008 - 0.15^2/2)×12×10})## in 10 years.

Question 925  mean and median returns, return distribution, arithmetic and geometric averages, continuously compounding rate, no explanation

The arithmetic average and standard deviation of returns on the ASX200 accumulation index over the 24 years from 31 Dec 1992 to 31 Dec 2016 were calculated as follows:

###\bar{r}_\text{yearly} = \dfrac{ \displaystyle\sum\limits_{t=1992}^{24}{\left( \ln⁡ \left( \dfrac{P_{t+1}}{P_t} \right) \right)} }{T} = \text{AALGDR} =0.0949=9.49\% \text{ pa}###

###\sigma_\text{yearly} = \dfrac{ \displaystyle\sum\limits_{t=1992}^{24}{\left( \left( \ln⁡ \left( \dfrac{P_{t+1}}{P_t} \right) - \bar{r}_\text{yearly} \right)^2 \right)} }{T} = \text{SDLGDR} = 0.1692=16.92\text{ pp pa}###

Assume that the log gross discrete returns are normally distributed and that the above estimates are true population statistics, not sample statistics, so there is no standard error in the sample mean or standard deviation estimates. Also assume that the standardised normal Z-statistic corresponding to a one-tail probability of 2.5% is exactly -1.96.

Which of the following statements is NOT correct? If you invested $1m today in the ASX200, then over the next 4 years:

(a) Continuously compounded mean and median returns are both 37.96% over the 4 year period.

(b) 95% confidence interval of the continuously compounded returns is between -28.3664% and 104.2864% over the 4 year period.

(c) Mean dollar value is $1.547835m while its median dollar value is $1.4617m in 4 years.

(d) 95% confidence interval of the dollar value is between $0.75302m and $2.17038m in 4 years.

(e) 95% confidence interval of the effective annual return is between -24.698% and 183.7332% over the 4 year period.

Question 927  mean and median returns, mode return, return distribution, arithmetic and geometric averages, continuously compounding rate

The arithmetic average continuously compounded or log gross discrete return (AALGDR) on the ASX200 accumulation index over the 24 years from 31 Dec 1992 to 31 Dec 2016 is 9.49% pa.

The arithmetic standard deviation (SDLGDR) is 16.92 percentage points pa.

Assume that the log gross discrete returns are normally distributed and that the above estimates are true population statistics, not sample statistics, so there is no standard error in the sample mean or standard deviation estimates. Also assume that the standardised normal Z-statistic corresponding to a one-tail probability of 2.5% is exactly -1.96.

If you had a $1 million fund that replicated the ASX200 accumulation index, in how many years would the mean dollar value of your fund first be expected to lie outside the 95% confidence interval forecast?

(a) 23.17 years.

(b) 41.31 years.

(c) 134.19 years.

(d) 536.75 years.

(e) Never.

Question 928  mean and median returns, mode return, return distribution, arithmetic and geometric averages, continuously compounding rate, no explanation

The arithmetic average continuously compounded or log gross discrete return (AALGDR) on the ASX200 accumulation index over the 24 years from 31 Dec 1992 to 31 Dec 2016 is 9.49% pa.

The arithmetic standard deviation (SDLGDR) is 16.92 percentage points pa.

Assume that the log gross discrete returns are normally distributed and that the above estimates are true population statistics, not sample statistics, so there is no standard error in the sample mean or standard deviation estimates. Also assume that the standardised normal Z-statistic corresponding to a one-tail probability of 2.5% is exactly -1.96.

If you had a $1 million fund that replicated the ASX200 accumulation index, in how many years would the mode dollar value of your fund first be expected to lie outside the 95% confidence interval forecast?

Note that the mode of a log-normally distributed future price is: ##P_{T \text{ mode}} = P_0.e^{(\text{AALGDR} - \text{SDLGDR}^2 ).T} ##

(a) 23.17 years.

(b) 41.31 years.

(c) 134.19 years.

(d) 536.75 years.

(e) Never.