Problem Set 2 – FIN 400 (Due date: November 4, Monday)
Name: Student ID Number:
- Consider the case of European IBM call and put options that have an exercise price of $115 and expire in two. The price of the call is $3, and the price of the put is $6. Assume IBM is expected to pay no dividend in the next two months. Suppose also that the current price of IBM stock is $109.30 and the bond-equivalent yield on a two-month T- bill is 6.0 per cent nonannualized.
Strategy A | Buy IBM stock, buy a put, and sell a call |
Strategy B | Buy a T-bill with a face value of $115 |
1-1. (2 points) Cost of Strategies A & B today?
Strategy A = $112.3
Strategy B = $108.49
1-2. (1 point) A profitable arbitrage strategy is to long/buy (1) and short/sell (2) this year and hold this position until next year. Choose the correct strategies (Strategy A or Strategy B) in each blank (1) and (2).
(1) Strategy B
(2) Strategy A
- CEO of Company X has 30 million shares of stocks and 30 million shares of options (of Company X). The stock return volatility (𝜎) is 0.50, dividend yield (d) is 0.0, risk-free rate (r) is 0.05, and maturity (T) is five years. The following table shows the stock price of Company X during
Date | Jan. | Feb. | Mar. | Apr. | May. | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
Price | $15.2 | $10.0 | $22.7 | $25.5 | $20.0 | $23.0 | $18.8 | $18.6 | $15.5 | $18.3 | $20.0 | $20.4 |
Suppose that options were granted at the money on February 2016.
2-1. (2 points) Find the option’s delta (change in one share of the option due to a $1 increase in stock price) as of December 2016.
Option delta = 0.919 | |
2-2. (2 points) Find an increase in CEO wealth for a $1 increase in Company X’s stock price as of December 2016.
$57.47 Million
- (3 points) The Federal Crop Insurance Corporation (FCIC) protect farmers against crop losses caused by the vagaries of weather: If farmers default, FCIC pays back any debt borrowed from a bank on behalf of the defaulted farmer. FCIC has relatively few inspectors to inspect individual claims. A farmer in Arizona can choose between planting water-hungry crops or hardy crops. Both crops cost $50. The gross returns on these plants depend on the annual rainfall. For water-hungry scraps, the gross return is $100 if the annual rainfall exceeds 12 inches (50% probability) and $0 if the annual rainfall is less than 12 inches (50% probability). For hardy crops, the gross return is
$60 if the annual rainfall exceeds 12 inches (50% probability), and $50 if the annual rainfall is less than 12 inches (50% probability).
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Suppose a farmer borrows debt (pay back the borrowed amount, or everything he has if the cash flow is smaller than the borrowed amount) from a bank to finance the cost of planting crops. In case of a farmer’s default, the bank gets paid by FCIC. Which plant will the farmer choose? Why (show farmers’ profit for each crop).
Hardy crop
Hardy crop: 0.5(60-50) + 0.5(50-50) = $5
Water hungry crop: 0.5*(100-50) + 0.5*(0-50) = $0
z | F(z) | z | F(z) |
-4 | 0.0000317 | 0 | 0.5 |
-3.9 | 0.0000481 | 0.1 | 0.53983 |
-3.8 | 0.0000723 | 0.2 | 0.57926 |
-3.7 | 0.000108 | 0.3 | 0.61791 |
-3.6 | 0.000159 | 0.4 | 0.65542 |
-3.5 | 0.000233 | 0.5 | 0.69146 |
-3.4 | 0.000337 | 0.6 | 0.72575 |
-3.3 | 0.000483 | 0.7 | 0.75804 |
-3.2 | 0.000687 | 0.8 | 0.78814 |
-3.1 | 0.000968 | 0.9 | 0.81594 |
-3 | 0.00135 | 1 | 0.84134 |
-2.9 | 0.001866 | 1.1 | 0.86433 |
-2.8 | 0.002555 | 1.2 | 0.88493 |
-2.7 | 0.003467 | 1.3 | 0.9032 |
-2.6 | 0.004661 | 1.4 | 0.91924 |
-2.5 | 0.00621 | 1.5 | 0.93319 |
-2.4 | 0.008198 | 1.6 | 0.9452 |
-2.3 | 0.010724 | 1.7 | 0.95543 |
-2.2 | 0.013903 | 1.8 | 0.96407 |
-2.1 | 0.017864 | 1.9 | 0.97128 |
-2 | 0.02275 | 2 | 0.97725 |
-1.9 | 0.028717 | 2.1 | 0.98214 |
-1.8 | 0.03593 | 2.2 | 0.9861 |
-1.7 | 0.044565 | 2.3 | 0.98928 |
-1.6 | 0.054799 | 2.4 | 0.9918 |
-1.5 | 0.066807 | 2.5 | 0.99379 |
-1.4 | 0.080757 | 2.6 | 0.99534 |
-1.3 | 0.0968 | 2.7 | 0.99653 |
-1.2 | 0.11507 | 2.8 | 0.99744 |
-1.1 | 0.13567 | 2.9 | 0.99813 |
-1 | 0.15866 | 3 | 0.99865 |
-0.9 | 0.18406 | 3.1 | 0.99903 |
-0.8 | 0.21186 | 3.2 | 0.99931 |
-0.7 | 0.24196 | 3.3 | 0.99952 |
-0.6 | 0.27425 | 3.4 | 0.99966 |
-0.5 | 0.30854 | 3.5 | 0.99977 |
-0.4 | 0.34458 | 3.6 | 0.99984 |
-0.3 | 0.38209 | 3.7 | 0.99989 |
-0.2 | 0.42074 | 3.8 | 0.99993 |
-0.1 | 0.46017 | 3.9 | 0.99995 |
0 | 0.5 | 4 | 0.99997 |
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Question
Problem Set 2 – FIN 400 (Due date: November 4, Monday)
Name: Student ID Number:
- Consider the case of European IBM call and put options that have an exercise price of $115 and expire in two. The price of the call is $3, and the price of the put is $6. Assume IBM is expected to pay no dividend in the next two months. Suppose also that the current price of IBM stock is $109.30 and the bond-equivalent yield on a two-month T- bill is 6.0 per cent nonannualized.
Strategy A | Buy IBM stock, buy a put, and sell a call |
Strategy B | Buy a T-bill with a face value of $115 |
Strategy B = |
1-1. (2 points) Cost of Strategies A & B today?
Strategy A:
Strategy B:
1-2. (1 point) A profitable arbitrage strategy is to long/buy (1) and short/sell (2) this year and hold this position until next year. Choose the correct strategies (Strategy A or Strategy B) in each blank (1) and (2).
- CEO of Company X has 30 million shares of stocks and 30 million shares of options (of Company X). The stock return volatility (𝜎) is 0.50, dividend yield (d) is 0.0, risk-free rate (r) is 0.05, and maturity (T) is five years. The following table shows the stock price of Company X during
Date | Jan. | Feb. | Mar. | Apr. | May. | Jun. | Jul. | Aug. | Sep. | Oct. | Nov. | Dec. |
Price | $15.2 | $10.0 | $22.7 | $25.5 | $20.0 | $23.0 | $18.8 | $18.6 | $15.5 | $18.3 | $20.0 | $20.4 |
Suppose that options were granted at the money on February 2016.
2-1. (2 points) Find the option’s delta (change in one share of the option due to a $1 increase in stock price) as of December 2016.
2-2. (2 points) Find an increase in CEO wealth for a $1 increase in Company X’s stock price as of December 2016.
- (3 points) The Federal Crop Insurance Corporation (FCIC) protect farmers against crop losses caused by the vagaries of weather: If farmers default, FCIC pays back any debt borrowed from a bank on behalf of the defaulted farmer. FCIC has relatively few inspectors to inspect individual claims. A farmer in Arizona can choose between planting water-hungry crops or hardy crops. Both crops cost $50. The gross returns on these plants depend on the annual rainfall. For water-hungry crops, the gross return is $100 if the annual rainfall exceeds 12 inches (50% probability) and $0 if the annual rainfall is less than 12 inches (50% probability). For hardy crops, the gross return is $60 if the annual rainfall exceeds 12 inches (50% probability) and $50 if the annual rainfall is less than 12 inches (50% probability).
Suppose a farmer borrows debt (pay back the borrowed amount, or everything he has if the cash flow is smaller than the borrowed amount) from a bank to finance the cost of planting crops. In case of a farmer’s default, the bank gets paid by FCIC. Which plant will the farmer choose? Why (show farmers’ profit for each crop).
z | F(z) | z | F(z) |
-4 | 0.0000317 | 0 | 0.5 |
-3.9 | 0.0000481 | 0.1 | 0.53983 |
-3.8 | 0.0000723 | 0.2 | 0.57926 |
-3.7 | 0.000108 | 0.3 | 0.61791 |
-3.6 | 0.000159 | 0.4 | 0.65542 |
-3.5 | 0.000233 | 0.5 | 0.69146 |
-3.4 | 0.000337 | 0.6 | 0.72575 |
-3.3 | 0.000483 | 0.7 | 0.75804 |
-3.2 | 0.000687 | 0.8 | 0.78814 |
-3.1 | 0.000968 | 0.9 | 0.81594 |
-3 | 0.00135 | 1 | 0.84134 |
-2.9 | 0.001866 | 1.1 | 0.86433 |
-2.8 | 0.002555 | 1.2 | 0.88493 |
-2.7 | 0.003467 | 1.3 | 0.9032 |
-2.6 | 0.004661 | 1.4 | 0.91924 |
-2.5 | 0.00621 | 1.5 | 0.93319 |
-2.4 | 0.008198 | 1.6 | 0.9452 |
-2.3 | 0.010724 | 1.7 | 0.95543 |
-2.2 | 0.013903 | 1.8 | 0.96407 |
-2.1 | 0.017864 | 1.9 | 0.97128 |
-2 | 0.02275 | 2 | 0.97725 |
-1.9 | 0.028717 | 2.1 | 0.98214 |
-1.8 | 0.03593 | 2.2 | 0.9861 |
-1.7 | 0.044565 | 2.3 | 0.98928 |
-1.6 | 0.054799 | 2.4 | 0.9918 |
-1.5 | 0.066807 | 2.5 | 0.99379 |
-1.4 | 0.080757 | 2.6 | 0.99534 |
-1.3 | 0.0968 | 2.7 | 0.99653 |
-1.2 | 0.11507 | 2.8 | 0.99744 |
-1.1 | 0.13567 | 2.9 | 0.99813 |
-1 | 0.15866 | 3 | 0.99865 |
-0.9 | 0.18406 | 3.1 | 0.99903 |
-0.8 | 0.21186 | 3.2 | 0.99931 |
-0.7 | 0.24196 | 3.3 | 0.99952 |
-0.6 | 0.27425 | 3.4 | 0.99966 |
-0.5 | 0.30854 | 3.5 | 0.99977 |
-0.4 | 0.34458 | 3.6 | 0.99984 |
-0.3 | 0.38209 | 3.7 | 0.99989 |
-0.2 | 0.42074 | 3.8 | 0.99993 |
-0.1 | 0.46017 | 3.9 | 0.99995 |
0 | 0.5 | 4 | 0.99997 |