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ALM and Internal Transfer Rates Session 3 Andrea Sironi MAFINRISK 2010 Market Risk

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2 Agenda Objectives of a ITR system An example Gross and net ITR How to determine ITRs? Transactions with implicit options The ideal features of a ITR system

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3 The Internal Transfer Rate System With the ITR System a bank pursues 4 different goals: Transfer the interest rate risk generated by different entities to a central treasury division where it can be properly managed Eliminate the funding problem from the branches Evaluate the marginal contribution to the bank profitability of different branches Centralize the risk management activity and evaluate its economic performance

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4 An example A branch raises 1 m€ with a 1Y Fixed rate Note (3%) and places a 3Y fixed rate loan (6%) Market interest rates for 1Y and 3Y are 4% and 5% Zero Coupon Curve Maturity

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5 follows To eliminate the interest rate risk the branch makes a virtual 1Y loan to the treasury division and, at the same time, sells a virtual 3Y Note to the same division. BranchTreasury Real 1Y Note (int rate = - 3%) Virtual 1Y Loan (1Y ITR = + 4%) Virtual 1Y Loan (1Y ITR = - 4%) Real 3Y Loan (int rate = + 6%) Virtual 3Y Note (3Y ITR = - 5%) Virtual 3Y Note (3Y ITR = + 5%) Interest margin = +2%Interest Margin = +1%

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6 follows

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7 The treasury receives an ex-ante interest margin of 1% (5% - 4%) The treasury, in order to hedge the interest rate risk, should issue a 3Y note at the 5% market rate and make a 1Y loan at the 4% market rate. In this way the interest risk is hedged but the profit has gone. Even if the treasury does not hedge the interest rate risk the interest margin of the operative branch is fixed. The risk has been transferred to the treasury division.

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8 An example (continues) If the yield curve were negatively sloped, the treasury margin would be negative treasury could realize hedging transactions aimed at eliminating risk and cancel the negative margin The negative slope would reflect the interest rates decrease expectations if treasury does not hedge it would benefit from future interest rate changes The branch would have a guaranteed 2% margin, which could in turn be divided into two components: A positive margin given by the liability side (1% = 4%-3%), guaranteed for a one year time period A positive margin given by the asset side (1% = 6%-5%), guaranteed for a three years time period

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9 Gross and net internal transfer rates Internal transfer of gross cash flows every single cash inflow is virtually sent to the treasury division and every single cash outflow is virtually generated by the treasury division. The financial statement of the branches is perfectly hedged, only the treasury division bears some interest rate risk. Internal transfer of net cash flows only the net cash flow of every operative branch is transferred to the treasury division. Part of the ALM is performed by the branches.

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10 follows A system based on the internal transfer of gross cash flows is usually preferred because: A system based on the internal transfer of net cash flows uses a single transfer rate for cash flows at different maturities A system based on the transfer of net cash flows leaves part of the interest rate risk to the branches The interest rate risk of the bank is different form the sum of the exposures of the various branches.

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11 An example of a net cash flows system Branch A receives a virtual liability of 100,000 from the treasury division, Branch B receive a virtual asset for the same amount. Branch AAmountMaturityRate - Liability50,0001 Y3% - Asset150,0003 Y6% Branch B - Liability150,0001 Y3% - Asset50,0003 Y6% Bank - Liability200,000 - Asset200,000 - Interest Margin6,0003%

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12 follows ITR= 1Y rate (4%)ITR= 2Y rate (4,5%)ITR= 3Y rate (5%) Branch AAmountMaturityRateAmountMaturityRateAmountMaturityRate - Virtual liability100,0001 Y4.00%100,0002 Y4.50%100,0003 Y5.00% - Interest Margin3,5003,0002,500 Branch B - Virtual Asset100,0001 Y4.00%100,0002 Y4.50%100,0003 Y5.00% - Interest Margin2,5003,0003,500 Treasury - Virtual liability to A100,0001 Y4.00%100,0002 Y4.50%100,0003 Y5.00% - Virtual Asset from B100,0001 Y4.00%100,0002 Y4.50%100,0003 Y5.00% - Interest Margin00.00%0 0 interest margins 6,000 6.000

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13 Net ITR We obtain different margins for the different branches depending on the ITR (1, 2 or 3 year maturity) we choose If 1 year ITR branch A, having funded a 3 year asset (150,000 euro) with a 1 year liability, is exposed to an increase in interest rates Branch B, having used part of its 1 year liabilities to fund a 3 year loan (50,000 euro), is exposed to a reduction of interest rates The interest rate risk is still within the branches

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14 An example of a gross ITR system Branch AAmountMaturityRate - Virtual Asset50,0001 Y4.00% - Virtual Liability150,0003 Y5.00% - Margin of interest2,0001.00% Branch B - Virtual Asset150,0001 Y4.00% - Virtual Liability50,0003 Y5.00% - Margin of interest2,0001.00% Treasury - Virtual Liability A150,0003 Y5.00% - Virtual Liability B50,0003 Y5.00% - Virtual Asset A50,0001 Y4.00% - Virtual Asset B150,0001 Y4.00% - Margin of interest2,0001.00% Total Interest Margin6,000

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15 Gross ITR In this case all cash flows are transferred to the treasury at the conditions corresponding to their maturities Multiple ITR The two branches economic results are equivalent (2,000 euro) and immunized from interest rate changes Interest rate risk is entirely transfered to the treasury If treasury wants to keep this interest rate risk, it would receive a 2,000 euro remuneration

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16 The choice of the Internal Transfer Rates The choice of the ITR should: Be grounded on market rates (the rates should be representative of real investment/financing opportunities) Distinguish between bid and ask rates. For a virtual liability we should use an ask rate, for a virtual asset a bid rate is the correct choice. Consider every single cash flow as a separate operation.

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17 The choice for a fixed rate operation For a fixed rate operation the ITR is chosen only once at the very beginning of the operation.

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18 The choice for a floating rate operation The ITR changes after every renegotiation of the floating rate operation

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19 The choice of ITR: some problems ITR for operations indexed to “administrative” rates (e.g. official rates, Prime rate, etc.) 2 problems: (i) no financial instrument is available in the market to hedge the related interest rate risk (ii) it’s difficult to measure (and therefore transfer to treasury) the basis risk

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20 The choice of ITR: some problems Ex.: mortgage indexed to Prime Rate 2 alternative ways of setting the ITR Libor does not allow to transfer the entire interest rate risk to the treasury; however, it gives the branch an incentive to lend at prime (Prime – spread) grants a complete transfer of interest rate risk to treasury (basis risk). The branch only deals with credit risk. However, no incentive to lend at Prime The aim of an ITR system is to centralize interest rate risk management and transfer all sources of this risk to a single unit (treasury) second alternative should be preferred Problem of incentives work on spread e.g. (i) expected difference (Prime Rate – Libor) + (ii) premium

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21 The choice of ITR: some problems Example 1 A branch grants a mortgage indexed to Prime Rate + 0.25% Based on historical data, the bank estimates that: Prime Rate = Libor + 2% ITR is not set as “Prime Rate - 2%”, but rather as: Prime Rate - (2%+k) Branch result 2.25%+k k is included in order to give the branch an incentive to lend at a favourable rate Prime rate tends to decrease at a slower pace when market rates decrease and viceversa

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22 The choice of ITR: some problems Example 2 A branch has granted a mortgage indexed at official ECB rate +2% Hp. ECB rate =2.5%; Libor 6 m = 3.15% Libor = 3.15% = ECB rate + k = 2.5% + 0.65% ITR = ECB rate+0.65% Branch income 1.35% Interest rate risk is taken by the treasury

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23 ITR for operations with implicit options Examples: Option to convert from fixed to floating the bank is selling to the debtor an option to convert a liability from fixed to floating Maximum rate option for the debtor not to pay more than X% in case of an increase in market rates A proper ITR system must take into account the value of these options

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24 ITR for operations with implicit options Mortgage with the option to convert from fixed to floating (or viceversa) is equivalent to a loan + sale of a swaption the buyer gets the right but not the obligation to buy at a future date and at predefined conditions (fixed rate and maturity) an Interest Rate Swap

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25 ITR for operations with implicit options The option is sold by the treasury to the branch treasury can hedge by buying a swaption in the market, paying a premium equal to the one paid by the branch the spread to the client must take into account the cost of the swaption

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26 ITR for operations with implicit options Maximum rate the bank has sold to the client an interest rate cap the implicit option must be paid by the customer Minimum rate the bank has bought an interest rate floor from the client the branch sells the floor to the treasury

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27 ITR for operations with implicit options

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28 ITR for operations with implicit options Max and Min rates for a loan When the bank funds a client at floating interest rate fixing: A maximum rate (the client company will never pay more then a predefined threshold); A minimum rate (the client company will never pay less then a predefined threshold); …the bank is implicitly selling the client an Interest Rate Cap and, at the same time, buying from the client an Interest Rate Floor selling an Interest Rate Collar the client company must pay a premium for the acquisition of the cap and at the same time receive a premium for the sale of the floor

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29 ITR for operations with implicit options Example: a client gets a loan at “Libor+s” and buys a collar (max rate 7%, min rate 4%) paying a premium (cap value > floor value) treasury sells the collar to the branch; the branch in turn sells the collar to the client If Libor becomes equal to 3.5%, the client must pay the difference between floor rate and market rate to the branch (0.5%); the same must be done by the branch to the treasury If Libor goes to 7.5%, the branch must pay to the client the difference between market rate and cap rate; the same must be done by the treasury to the branch

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30 ITR for operations with implicit options Prepayment option The borrower has bought an option to buy back the loan before maturity This option must be paid by the borrower to the branch The branch in turn is selling this option to the treasury If interest rates decrease and the borrower exercises the option, then the branch would in turn exercise the option with the treasury

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31 ITR for operations with implicit options

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32 ITR for operations with implicit options

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33 The ideal characteristics of an ITR system 1.An ITR system should be such that the resulting profits of the different operating units is equal to the global profitability of the entire bank 2.The ITR system should be based on a gross cash flow system 3.The ITR system should be based on rates differentiated by maturity (multiple ITR) 4.The ITR system should be based on market rates, that can be actually negotiated by the treasury 5.The ITR system should be based on different rates for assets and liabilities (bid and offer rates)

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34 The ideal characteristics of an ITR system (continues) 6.The ITR system should be such to protect operating units from changes in the interest rates (directional risk) 7.The ITR system should be such that branches profitability changes only come from credit risk (other than operating revenues and costs) not from interest rate risk 8.Operating units should not be hedged from basis risk unless this risk can in turn be hedged by the treasury in the market 9.The ITR system must be such to protect the operating units from the risks related to implicit options 10.The ITR system must be arbitrage-free the operating units must not be able to realize arbitrages against the treasury

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35 Questions & Exercises 1. Branch A of a bank only has fixed-rate deposits, with a maturity of one year, for 100 million euros; branch B has only fixed-rate loans, for the same amount, with a maturity of 3 years. Market rates, on the 1 and 3 year maturity respectively, currently are 5% and 4%. Consider the following statements: I. One cannot use market rates as ITRs, as they would lead to a negative margin for the Treasury Unit; II. 3- and 4-years ITRs must be set exactly at 5% and 4%; III. The Treasury Unit can both hedge interest rate risk and meanwhile have a positive net income; IV. The Treasury Unit can hedge interest rate risk, but doing so would bring its net income down to zero. Which one(s) is (are) correct? A. All four. B. II and IV. C. I and III D. II and III.

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36 Questions & Exercises 2. Consider the following statements: “internal transfer rate systems based on flat rates (uniform rates for all maturities)…: i) …are wrong because internal trades take place at non-market rates”; ii) …are correct because internal trades involve no credit risk, so there is no need for maturity-dependent risk-premiums”; iii) …are wrong because they are equivalent to a system where only net balances are transferred between the branches and the Treasury department”; iv) …are wrong because part of the interest rate risk remains with the branches”. Which of them would you agree with? A) Only ii); B) Both i) and iv); C) All but ii); D) Both iii) and iv).

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37 Questions & Exercises 3. A bank has two branches, A and B. Branch A has 100 million euros of one- year term deposits, at a fixed rate of 1.5%, and 40 million euros of 3 year fixed-rate loans at 5%. Branch B has 100 million euros of 3 year fixed rate loans at 5%, and 6-month deposits for 80 million euros, at 1%. Market yields for 6-month, 1 year and 3 years funds are 2%, 3%, 4% respectively. The o/night market rate is 1%. Compute the (maturity adjusted) one-year repricing gap and the expected annual profits of both branches (assuming that short term items can be rolled over at the same rate), under the following hypotheses: (a)each branch funds (or invests) its net balance (between assets and liabilities with customers) on the market for overnight funds; (b)each branch funds (or invests) its net balance (between assets and labilities) through virtual one-year deals with the Treasury; (c)the bank has a system of ITRs based on gross cash flows and market rates. Finally, suppose you are the manager of branch B and that your salary depends on the profits and losses experienced by your branch. Which solution, among a), b) and c) would you like best if you were expecting rates to stay stable? How could your choice be criticised?

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38 Questions & Exercises 4. A branch issues a 10-year floating-rate loan at Libor + 1%. The borrower may convert it to a fixed rate loan after 5 years; also, he may payback the whole debt after 8 years. If the bank is using an appropriate system of internal transfer rates the branch should… A) buy from the Treasury a 5-year swaption and an 8-year call on the residual debt; B) buy from the Treasury a 5-year swaption and sell the Treasury an 8-year call on the residual debt; C) sell the Treasury a 5-year swaption and an 8-year put on the residual debt; D) buy from the Treasury a 5-year swaption and an 8-year put on the residual debt.

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39 Questions & Exercises 5. A bank is issuing a floating-rate loan, with a collar limiting rates between 5% and 12%. Suppose s is the spread on the loan and p is the spread on a comparable loan (same borrower, same collateral, same maturity, etc.) with no collar. Which of the following statements is correct? A) s > p, because the borrower is actually buying an option from the bank; B) s < p, because the borrower is actually selling the bank an option; C) s = p, because the bank is both selling and buying an option; D) the relationship between s and p depends on… (specify).

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