ࡱ>  |Sbjbj @`ZN 8*F;|mmm9999999$=D@b:&mm&&::R)R)R)&v9R)&9R)R)65!7Pޚ<'69:0;6d@Z(v@8!7@!7mK! R)W#$mmm::(mmm;&&&&@mmmmmmmmm : CHAPTER 23: FUTURES, SWAPS, AND RISK MANAGEMENT PROBLEM SETS 1. In formulating a hedge position, a stocks beta and a bonds duration are used similarly to determine the expected percentage gain or loss in the value of the underlying asset for a given change in market conditions. Then, in each of these markets, the expected percentage change in value is used to calculate the expected dollar change in value of the stock or bond portfolios, respectively. Finally, the dollar change in value of the underlying asset, along with the dollar change in the value of the futures contract, determines the hedge ratio. The major difference in the calculations necessary to formulate a hedge position in each market lies in the manner in which the first step identified above is computed. For a hedge in the equity market, the product of the equity portfolios beta with respect to the given market index and the expected percentage change in the index for the futures contract equals the expected percentage change in the value of the portfolio. Clearly, if the portfolio has a positive beta and the investor is concerned about hedging against a decline in the index, the result of this calculation is a decrease in the value of the portfolio. For a hedge in the fixed income market, the product of the bonds modified duration and the expected change in the bonds yield equals the expected percentage change in the value of the bond. Here, the investor who has a long position in a bond (or a bond portfolio) is concerned about the possibility of an increase in yield, and the resulting change in the bonds value is a loss. A secondary difference in the calculations necessary to formulate a hedge position in each market arises in the calculation of the hedge ratio. In the equity market, the hedge ratio is typically calculated by dividing the total expected dollar change in the value of the portfolio (for a given change in the index) by the profit (i.e., the dollar change in value) on one futures contract (for the given change in the index). In the bond market, the comparable calculation is generally thought of in terms of the price value of a basis point (PVBP) for the bond and the PVBP for the futures contract, rather than in terms of the total dollar change in both the value of the portfolio and the value of a single futures contract. 2. One of the considerations that would enter into the hedging strategy for a U.S. exporting firm with outstanding bills to its customers denominated in foreign currency is whether the U.S. firm also has outstanding payables denominated in the same foreign currency. Since the firm receives foreign currency when its customers bills are paid, the firm hedges by taking a short position in the foreign currency. The U.S. firm would reduce its short position in futures to the extent that outstanding payables offset outstanding receivables with the same maturity because the outstanding payables effectively hedge the exchange rate risk of the outstanding receivables. Equivalently, if the U.S. firm expects to incur ongoing obligations denominated in the same foreign currency in order to meet expenses required to deliver additional products to its customers, then the firm would reduce its short position in the foreign currency futures. In general, if the U.S. firm incurs expenses in the same foreign currency, then the firm would take a short position in the currency futures to hedge its profits measured in the foreign currency. If the U.S. firm incurs all of its expenses in U.S. dollars, but bills its customers in the foreign currency, then the firm would take a position to hedge the outstanding receivables, not just the profit. Another consideration that affects the U.S. exporting firms willingness to hedge its exchange rate risk is the impact of depreciation of the foreign currency on the firms prices for its products. For a U.S. firm that sets its prices in the foreign currency, the dollar-equivalent price of the firms products is reduced when the foreign currency depreciates, so that the firm is likely to find it desirable to increase its short position in currency futures to hedge against this risk. If the U.S. firm is not able to increase the price of its products in the foreign currency due to competition, the depreciation of the foreign currency has an impact on profits similar to the impact of foreign currency depreciation on the U.S. firms receivables. 3. The hedge will be much more effective for the gold-producing firm. Prices for distant maturity oil futures contracts have surprisingly low correlation with current prices because convenience yields and storage costs for oil can change dramatically over time. When near-term oil prices fall, there may be little or no change in longer-term prices, since oil prices for very distant delivery generally respond only slightly to changes in the current market for short-horizon oil. Because the correlation between short- and long-maturity oil futures is so low, hedging long-term commitments with short-maturity contracts does little to eliminate risk; that is, such a hedge eliminates very little of the variance entailed in uncertain future oil prices. In contrast, both convenience yields and storage costs for gold are substantially smaller and more stable; the result is that the correlation between short-term and more distant gold futures prices is substantially greater. In other words, the basis between near and distant maturity gold futures prices is far less variable, so hedging long-term prices with short-term gold contracts results in a substantially greater percentage reduction in volatility. 4. Municipal bond yields, which are below T-bond yields (tax-exempt status), are expected to close in on Treasury yields. Because yields and prices are inversely related, municipal bond prices will perform poorly compared to Treasuries. Establish a spread position, buying Treasury-bond futures and selling municipal bond futures. The net bet on the general level of interest rates is approximately zero. You have made a bet on relative performances in the two sectors. 5. a. S0 ( (1 + rM ) ( D = (2,000 ( 1.08) 35 = 2,125.00 b. S0 ( (1 + rf ) ( D = (2,000( 1.03) 35 = 2,025.00 The futures price is too low. Buy futures, short the index, and invest the proceeds of the short sale in T-bills: CF NowCF in 1 YearBuy futures0ST ( 2,012Short index2,000(ST ( 35Buy T-bills(2,0002060Total013 6. a. The value of the underlying stock is: $50 ( 2,000 = $100,000 $25/$100,000 = 0.00025 = 0.025% of the value of the stock $40 ( 0.00025 = $0.01 c. $0.10/$0.01 = 10.00 The transaction cost in the stock market is 10.00 times the transaction cost in the futures market. 7. a. You should be short the index futures contracts. If the stock value falls, you need futures profits to offset the loss. b. Each contract is for $50 times the index, currently valued at 1,950. Therefore, each contract controls stock worth: $50 ( 1,950 = $97,500 In order to hedge a $19.5 million portfolio, you need: $ 19,500,000 = 200 contracts $ 97,500 c. Now, your stock swings only 0.6 as much as the market index. Hence, you need 0.6 as many contracts as in (b): 0.6 ( 200 = 120 contracts. 8. If the beta of the portfolio were 1.0, she would sell $1 million of the index. Because beta is 1.25, she should sell $1.25 million of the index. 9. You would short $0.50 of the market index contract and $0.75 of the computer industry contract for each dollar held in IBM. 10. The dollar is depreciating relative to the euro. To induce investors to invest in the U.S., the U.S. interest rate must be higher. 11. a. From parity: EMBED Equation.3  b. Let F0 = $1.52/. Dollars are relatively too cheap in the forward market ! pounds are too expensive. Borrow the present value of 1, use the proceeds to buy pound-denominated bills in the spot market, and sell 1 forward: Action NowCF in $Action at period-endCF in $Sell 1 forward for $1.520Collect $1.52, deliver 1 $1.52 $E1Buy 1/1.02 in spot market; invest at the British risk-free rate1.50/1.02 = $1.47Exchange 1 for $E1$E1Borrow $1.47$1.47Repay loan; U.S. interest rate = 2%$1.49Total0Total$0.03 12. a. Lend in the U.K. b. Borrow in the U.S. c. Lending in the U.S. offers a 4% rate of return. Lending in the U.K. and covering interest rate risk with futures or forwards offers a rate of return of  EMBED Equation.3  An arbitrage strategy involves simultaneous lending (UK) and borrowing (US) with the covering of interest rate risk: Action NowCF in $Action at period-endCF in $Borrow $2.00 in U.S.$2.00Repay loan$2.00 1.04Convert borrowed dollars to pounds; lend 1 pound in U.K.$2.00Collect repayment; exchange proceeds for dollars1.07 E1Sell forward 1.07 at F0 = $1.98 0Unwind forward1.07 ($1.98 E1)Total0Total$0.0386 13. The farmer must sell forward 100,000 (1/0.90) = 111,111 bushels of yellow corn This requires selling 111,111/5,000 = 22.2 contracts 14. The closing futures price will be: 100 ( 0.60 = 99.40 The initial futures price was 99.1175, so the gain to the long side is 28.25 basis points or 28.25 basis points ( $25 per basis point = $706.25 The gain can also be computed as 0.002825 ( ( $1,000,000 = $706.25 15. Suppose the yield on your portfolio increases by 1.5 basis points. Then the yield on the T-bond contract is likely to increase by 1 basis point. The loss on your portfolio will be $1 million ( y ( D* = $1,000,000 ( 0.00015 ( 4 = $600 The change in the futures price (per $100 par value) will be $95 ( 0.0001 ( 9 = $0.0855 This is a change of $85.50 on a $100,000 par value contract. Therefore you should sell: $600/$85.50 = 7 contracts 16. She must sell: EMBED Equation.3 million of T-bonds 17. If yield changes on the bond and the contracts are each 1 basis point, then the bond value will change by $10,000,000 ( 0.0001 ( 8 = $8,000 The contract will result in a cash flow of $100,000 ( 0.0001 ( 6 = $60 Therefore, the firm should sell: 8,000/60 = 133 contracts The firm sells the contracts because you need profits on the contract to offset losses as a bond issuer if interest rates increase. 18. a. F0 = S0(l + rf )T = 1500 ( 1.02 = 1530 If F0 = 1545, you could earn arbitrage profits as follows: CF NowCF in 1 yearBuy gold(1500ST Short futures01545 ( ST Borrow $15001500(1530Total015The forward price must be 1530 in order for this strategy to yield no profit. b. F0 = S0(l + rf )T = 1500 ( 1.02 = 1530 If F0 = 1550, you could earn arbitrage profits as follows: CF NowCF in 1 yearBuy gold(1500ST Short futures01550 ( ST Borrow $15001500(1530Total020 19. If a poor harvest today indicates a worse than average harvest in future years, then the futures prices will rise in response to todays harvest, although presumably the two-year price will change by less than the one-year price. The same reasoning holds if corn is stored across the harvest. Next years price is determined by the available supply at harvest time, which is the actual harvest plus the stored corn. A smaller harvest today means less stored corn for next year which can lead to higher prices. Suppose first that corn is never stored across a harvest, and second that the quality of a harvest is not related to the quality of past harvests. Under these circumstances, there is no link between the current price of corn and the expected future price of corn. The quantity of corn stored will fall to zero before the next harvest, and thus the quantity of corn and the price in one year will depend solely on the quantity of next years harvest, which has nothing to do with this years harvest. 20. The required rate of return on an asset with the same risk as corn is .5% + 0.5(.9% .5%) = .7% per month Thus, in the absence of storage costs, three months from now corn would sell for $5.50 ( 1.0073 = $5.616 The future value of three months storage costs is $0.03 ( FA(.5%, 3) = $0.090 (PMT = $0.03; N = 3; I = 0.5; PV = $0; Solve for FV = $0.09). where FA stands for the future value factor for a level annuity with a given interest rate and number of payments. Thus, in order to induce storage, the expected price would have to be $5.616 + $0.090 = $5.707 Because the expected spot price is $5.88, you would store corn. 21. If the exchange of currencies were structured as three separate forward contracts, the forward prices would be determined as follows: Forward exchange rate ( $1 million euros = Dollars to be delivered Year 1: 1.20 ( (1.04/1.03) ( 1 million euros = $1.2117 million Year 2: 1.20 ( (1.04/1.03)2 ( 1 million euros = $1.2234 million Year 3: 1.20 ( (1.04/1.03)3 ( 1 million euros = $1.2535 million Instead, we deliver the same number of dollars (F*) each year. The value of F* is determined by first computing the present value of this obligation:  EMBED Equation.3  F* equals $1.2231 million per year (PV = 3.3943; N = 3; I = 4; FV = $0; Solve for PMT = 1.2231). 22. The firms overall cost of the fund will equal the spread between the LIBOR rate and the fixed rate on debt times the notional principal. In this case (0.06-0.07) $100,000,000 = -$1,000,000. 23. a. The swap rate moved in favor of firm ABC. ABC should have received 1% more per year than it could receive in the current swap market. Based on notional principal of $10 million, the loss is 0.01 ( $10 million = $100,000 per year. b. The market value of the fixed annual loss is obtained by discounting at the current 5% rate on three-year swaps. The loss is $100,000 ( Annuity factor (5%, 3) = $272,325 (PMT = $100,000; N = 3; I = 5; FV = $0; Solve for PV = $272,325) c. If ABC had become insolvent, XYZ would not be harmed. XYZ would be happy to see the swap agreement canceled. However, the swap agreement ought to be treated as an asset of ABC when the firm is reorganized. 24. The firm receives a fixed rate that is 2% higher than the market rate. The extra payment of (0.02 $10 million) has present value equal to $200,000 Annuity factor (5%, 5) = $865,895 (PMT = $200,000; N = 5; I = 5; FV = $0; Solve for PV = $865,895) 25. a. From parity: F0 = 1,900 ( (1 + 0.03) 40 = 1,917 Actual F0 is 1,914; so the futures price is 3 below the proper level. b. Buy the relatively cheap futures, sell the relatively expensive stock and lend the proceeds of the short sale: CF NowCF in 6 monthsBuy futures0ST ( 1,914Sell shares1,900(ST ( 40Lend $1,900(1,9001,957Total03 c. If you do not receive interest on the proceeds of the short sales, then the $1,600 you receive will not be invested but will simply be returned to you. The proceeds from the strategy in part (b) are now negative: an arbitrage opportunity no longer exists. CF NowCF in 6 monthsBuy futures0ST ( 1,914Sell shares1,900(ST ( 40Place $1,900 in margin account(1,9001,900Total0"54 d. If we call the original futures price F0, then the proceeds from the long-futures, short-stock strategy are CF NowCF in 6 monthsBuy futures0ST ( F0 Sell shares1,900(ST ( 40Place $1,900 in margin account(1,9001,900Total01,860 " F0F0 can be as low as 1,860 without giving rise to an arbitrage opportunity. On the other hand, if F0 is higher than the parity value (1,917), then an arbitrage opportunity (buy stocks, sell futures) will exist. CF NowCF in 6 monthsSell futures0F0 ( STBuy shares"1,900ST ( 40Borrow $1,900 1,900 "1,957Total0F0"1,917Therefore, the no-arbitrage range is 1,860 d" F0 d" 1917 26. a. Call p the fraction of proceeds from the short sale to which we have access. Ignoring transaction costs, the lower bound on the futures price that precludes arbitrage is the following usual parity value (except for the factor p): S0 (l + rf p) D The dividend (D) equals: 0.019 ( 1,950 = $37.05 The factor p arises because only this fraction of the proceeds from the short sale can be invested in the risk-free asset. We can solve for p as follows: 1,950 ( (1 + 0.025p) 37.05 = 1,951 ( p = 0.7805 b. With p = 0.9, the no-arbitrage lower bound on the futures price is 1,950 [1 + (0.025 ( 0.9)] 37.05 = 1,956.83 The actual futures price is 1,951. The departure from the bound is therefore 5.83. This departure also equals the potential profit from an arbitrage strategy. The strategy is to short the stock, which currently sells at 1,950. The investor receives 90% of the proceeds (1,755) and the remainder (195) remains in the margin account until the short position is covered in one year. The investor buys futures and lends 1,215: CF NowCF in 1 YearBuy futures0ST ( 1,951 Sell shares1950 ( 195195 ( ST ( 37.05Lend(1,7551,755 ( 1.025 = 1,798.88 Total05.83 The profit is: 5.83 ( $50 per contract = $292.25 CFA PROBLEMS 1. a. By spot-futures parity: F0 = S0 (l + rf) = 185 [1 + (0.06/2)] = 190.55 b. The lower bound is based on the reverse cash-and-carry strategy. Action NowCF in $Action at period-endCF in $Buy one TOBEC index futures contract0Sell one TOBEC index futures contract$100 (F1 " F0)Sell spot TOBEC index+$18,500Buy spot TOBEC index"$100 S1Lend $18,500"$18,500Collect loan repayment$18,500 1.03 = +$19,055Pay transaction costs"$15.00Total0Total"$100F0 + $19,040(Note that F1 = S1 at expiration.) "$100F0 + $19,040 = 0 ! The lower bound for F0 is: 19,040/100 = 190.40 2. a. The strategy would be to sell Japanese stock index futures to hedge the market risk of Japanese stocks, and to sell yen futures to hedge the currency exposure. b. Some possible practical difficulties with this strategy include Contract size on futures may not match size of portfolio. Stock portfolio may not closely track index portfolios on which futures trade. Cash flow management issues from marking to market. Potential mispricing of futures contracts (violations of parity). 3. a. The hedged investment involves converting the $1 million to foreign currency, investing in that country, and selling forward the foreign currency in order to lock in the dollar value of the investment. Because the interest rates are for 90-day periods, we assume they are quoted as bond equivalent yields, annualized using simple interest. Therefore, to express rates on a per quarter basis, we divide these rates by 4: Japanese governmentSwiss governmentConvert $1 million to local currency$1,000,000 133.05 = 133,050,000$1,000,000 1.5260 = SF1,526,000Invest in local currency for 90 days133,050,000 [1 + (0.076/4)] = 135,577,950SF1,526,000 [1 + (0.086/4)] = SF1,558,809Convert to $ at 90-day forward rate135,577,950/133.47 = $1,015,7931,558,809/1.5348 = $1,015,643 b. The results in the two currencies are nearly identical. This near-equality reflects the interest rate parity theorem. This theory asserts that the pricing relationships between interest rates and spot and forward exchange rates must make covered (that is, fully hedged and riskless) investments in any currency equally attractive. c. The 90-day return in Japan is 1.5793%, which represents a bond-equivalent yield of 1.5793% ( 365/90 = 6.405%. The 90-day return in Switzerland is 1.5643%, which represents a bond-equivalent yield of 1.5643% ( 365/90 = 6.344%. The estimate for the 90-day risk-free U.S. government money market yield is in this range. 4. The investor can buy X amount of pesos at the (indirect) spot exchange rate and invest the pesos in the Mexican bond market. Then, in one year, the investor will have X (1 + r MEX) pesos These pesos can then be converted back into dollars using the (indirect) forward exchange rate. Interest rate parity asserts that the two holding period returns must be equal, which can be represented by the formula: (1 + r US) = E0 (1 + r MEX) (1/ F0) The left side of the equation represents the holding-period return for a U.S. dollar-denominated bond. If interest rate parity holds, then this term also corresponds to the U.S. dollar holding-period return for the currency-hedged Mexican one-year bond. The right side of the equation is the holding-period return, in dollar terms, for a currency-hedged peso-denominated bond. Solving for r US: (1 + r US) = 9.5000 (1 + 0.065) (1/9.8707) (1 + r US) = 1.0250 r US = 2.50% Thus r US = 2.50%, which is the same as the yield for the one-year U.S. bond. 5. a. From parity: EMBED Equation.3  b. Action NowCF in $Action at Period-endCF in Borrow $1,000,000 in U.S.$1,000,000Repay loan"($1,000,000 1.0350.25 ) = "$1,008,637.446Sell forward $1,008,637.446 at F0 = 123.26050Unwind forward"(1,008,637.446 123.2605) = "124,325,155.9127Convert borrowed dollars to yen; lend 124,300,000 in Japan $1,000,000Collect repayment in yen124,300,000 1.0050.25 = 124,455,084.5187Total0Total129,928.61The arbitrage profit is 129,928.61 6. a. Delsing should sell stock index futures contracts and buy bond futures contracts. This strategy is justified because buying the bond futures and selling the stock index futures provides the same exposure as buying the bonds and selling the stocks. 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The number of contracts in each case is: i. 5 $200,000,000 0.0001 = $100,000 $100,000/97.85 = 1022 contracts ii. $200,000,000/($1,378 250) = 581 contracts 7. Situation A. The market value of the portfolio to be hedged is $20 million. The market value of the bonds controlled by one futures contract is $63,330. If we were to equate the market values of the portfolio and the futures contract, we would sell $20,000,000/$63,330 = 315.806 contracts However, we must adjust this naive hedge for the price volatility of the bond portfolio relative to the futures contract. Price volatilities differ according to both the duration and the yield volatility of the bonds. In this case, the yield volatilities may be assumed equal, because any yield spread between the Treasury portfolio and the Treasury bond underlying the futures contract is likely to be stable. However, the duration of the Treasury portfolio is less than that of the futures contract. Adjusting the naive hedge for relative duration and relative yield volatility, we obtain the adjusted hedge position  EMBED Equation.3  contracts Situation B. Here, the treasurer seeks to hedge the purchase price of the bonds; this requires a long hedge. The market value of the bonds to be purchased is $20 million ( 0.93 = $18.6 million The duration ratio is 7.2/8.0, and the relative yield volatility is 1.25. Therefore, the hedge requires the treasurer to take a long position in  EMBED Equation.3 contracts 8. a. % change in T-bond price = Modified duration ( Change in YTM = 7.0 ( 0.50% = 3.5% b. When the YTM of the T-bond changes by 50 basis points, the predicted change in the yield on the KC bond is 1.22 ( 50 = 61 basis points. 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