| Foreword |
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xv | |
| Acknowledgments |
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xvii | |
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1 | (4) |
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1.1 To Excel or Not to Excel? |
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1 | (1) |
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1.2 Existing Tools and Software |
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2 | (3) |
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5 | (12) |
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5 | (4) |
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2.1.1 Cash, synthetic or hybrid CDOs |
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5 | (2) |
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2.1.2 Managed or static CDOs |
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7 | (1) |
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2.1.3 Full capital structures versus single tranches |
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8 | (1) |
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2.2 Description of a Cash Flow CDO |
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9 | (3) |
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2.3 Life Cycle of a Cash CDO |
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12 | (2) |
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2.4 Contribution to the "Credit Crunch" |
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14 | (3) |
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2.4.1 The role of CDOs and credit derivatives |
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14 | (1) |
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14 | (1) |
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15 | (1) |
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2.4.4 The role of fair value accounting |
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15 | (2) |
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3 Introduction to Modelling |
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17 | (6) |
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17 | (1) |
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3.2 Modelling Philosophies and Trade-Offs |
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17 | (1) |
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17 | (1) |
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18 | (2) |
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3.3.1 Visibility/audit-ability/verification |
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18 | (1) |
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3.3.2 Degree of automation |
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19 | (1) |
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20 | (1) |
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3.4 Organization and Layout of a Model |
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20 | (1) |
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3.4.1 Organization of a model |
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20 | (1) |
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3.4.2 Layout of the model worksheets |
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21 | (1) |
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3.5 Life-Cycle Issues: Building an Adaptable Model |
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21 | (2) |
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4 Prerequisites to Cash Flow Modelling |
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23 | (24) |
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23 | (8) |
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4.1.1 Description of the curve and dates model |
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24 | (2) |
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4.1.2 VBA date calculation |
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26 | (5) |
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4.2 Interest Rate Curve Modelling |
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31 | (8) |
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4.2.1 Creating a discount curve |
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31 | (8) |
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4.3 Present Value Modelling |
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39 | (8) |
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40 | (1) |
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4.3.2 Internal rate of return |
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41 | (2) |
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43 | (1) |
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4.3.4 Weighted average life |
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43 | (1) |
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44 | (3) |
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47 | (12) |
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5.1 Create the Input Sheet |
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47 | (10) |
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47 | (1) |
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47 | (3) |
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50 | (2) |
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52 | (3) |
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55 | (1) |
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56 | (1) |
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5.2 The Value of Labelling |
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57 | (2) |
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59 | (26) |
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6.1 Initial Asset Pool: Rep Line Modelling vs. Actual Assets |
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59 | (1) |
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6.2 The Collateral Sheet in the Cash Flow Model |
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59 | (4) |
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60 | (3) |
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6.2.2 Original Collateral Pools |
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63 | (1) |
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6.3 Modelling Defaults and Recoveries |
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63 | (4) |
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64 | (1) |
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6.3.2 Recovery amount using simple delay |
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65 | (1) |
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6.3.3 Recovery amount using recovery vector |
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65 | (1) |
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6.3.4 Anticipated Recovery |
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66 | (1) |
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6.3.5 Timing of defaults and recoveries |
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66 | (1) |
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67 | (2) |
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68 | (1) |
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68 | (1) |
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6.4.3 End of period balances |
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69 | (1) |
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6.5 Modelling Reinvestment |
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69 | (2) |
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6.5.1 Rep line reinvestment collateral pools |
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69 | (2) |
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71 | (1) |
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72 | (4) |
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6.7.1 Principal Collection Account |
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73 | (1) |
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6.7.2 Interest Collection Account |
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73 | (1) |
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6.7.3 Expense Reimbursement Account |
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74 | (1) |
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75 | (1) |
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6.7.5 Unused Proceeds Account |
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75 | (1) |
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6.8 Timing Models vs. Actual Timing |
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76 | (2) |
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6.8.1 Interest calculation periods |
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76 | (1) |
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76 | (1) |
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77 | (1) |
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6.8.4 Timing for other calculations |
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78 | (1) |
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6.9 Simple Warehouse Modelling |
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78 | (7) |
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6.9.1 The Portfolio Sheet |
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79 | (1) |
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80 | (5) |
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7 Basic Waterfall Modelling |
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85 | (38) |
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85 | (5) |
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7.1.1 Priority of payments for interest proceeds (the interest waterfall) |
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85 | (2) |
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7.1.2 Priority of payments for principal proceeds or principal waterfall |
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87 | (2) |
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7.1.3 Post enforcement priority of payments |
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89 | (1) |
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89 | (1) |
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90 | (3) |
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7.3 Avoiding Negative Values |
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93 | (1) |
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7.4 Timing Modelled vs. Actual Timing |
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93 | (1) |
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7.5 Liabilities Cash Flows |
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93 | (2) |
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7.6 Fees and Expenses Cash Flows |
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95 | (2) |
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97 | (4) |
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100 | (1) |
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101 | (1) |
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7.7.3 Interest due but not paid current (interest waterfall) |
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101 | (1) |
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7.8 Interest Waterfall (Available Funds after Payment) |
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101 | (1) |
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7.9 Interest Waterfall Calculations |
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101 | (2) |
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7.9.1 Summary of the principal outstanding of the notes |
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103 | (1) |
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103 | (2) |
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104 | (1) |
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105 | (1) |
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7.11 Principal Waterfall (Available Funds after Payment) |
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105 | (1) |
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7.12 Principal Waterfall Calculations |
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106 | (2) |
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7.12.1 Available for reinvestment |
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106 | (1) |
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107 | (1) |
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7.12.3 A note on deferred interest |
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107 | (1) |
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7.12.4 Trustee/admin fees |
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107 | (1) |
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7.12.5 Incentive fee and equity due |
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108 | (1) |
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7.13 Adding Over-Collateralization Tests |
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108 | (8) |
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7.13.1 Using interest to cure breaches vs. using principal to cure breaches |
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108 | (3) |
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7.13.2 Class A/B OC coverage |
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111 | (3) |
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114 | (1) |
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7.13.4 Class D OC and class E OC tests |
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115 | (1) |
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7.14 Adding Interest Coverage Tests |
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116 | (3) |
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117 | (1) |
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118 | (1) |
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7.14.3 Class D and class E IC tests |
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119 | (1) |
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7.15 Technical Issues with Coverage Tests |
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119 | (4) |
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7.15.1 Notes on setting ratios |
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119 | (1) |
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7.15.2 Collateral par tests |
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120 | (1) |
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7.15.3 Curing OC breaches in the principal waterfall |
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120 | (3) |
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123 | (10) |
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8.1 Purpose of the Outputs Sheet |
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123 | (1) |
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8.2 Collating Waterfall Outputs |
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123 | (3) |
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126 | (1) |
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8.3.1 Par Spread and Discount Margin |
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126 | (1) |
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127 | (1) |
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127 | (1) |
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127 | (1) |
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127 | (2) |
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128 | (1) |
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128 | (1) |
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128 | (1) |
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128 | (1) |
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129 | (1) |
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129 | (1) |
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8.5 Weighted Average Life and Internal Rate of Return |
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129 | (1) |
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8.5.1 Internal Rate of Return |
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129 | (1) |
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8.5.2 Weighted average life |
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130 | (1) |
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130 | (1) |
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131 | (2) |
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8.7.1 Conditional formatting |
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131 | (2) |
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9 Moody's Rating Agency Methodology |
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133 | (38) |
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9.1 Introduction to Agency Methodologies |
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133 | (1) |
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9.1.1 Two-stage modelling process |
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133 | (1) |
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133 | (1) |
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134 | (1) |
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9.3 Evaluating the Collateral |
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135 | (17) |
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9.3.1 The Portfolio Sheet |
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136 | (1) |
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9.3.2 The Reference Sheet |
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136 | (5) |
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141 | (5) |
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9.3.4 Step 1: Calculating the diversity score |
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146 | (3) |
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9.3.5 Step 2: Assessing the weighted average rating factor |
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149 | (1) |
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9.3.6 Step 3: Determining the weighted average life |
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150 | (1) |
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9.3.7 Step 4: Calculating the default rate |
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150 | (1) |
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9.3.8 Step 5: Determining the binomial probabilities |
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151 | (1) |
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9.4 Creating the Moody's Sheet and Related References in the Cash Flow Model |
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152 | (7) |
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153 | (2) |
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155 | (2) |
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9.4.3 Interest rate curves and default rate curves |
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157 | (1) |
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157 | (2) |
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159 | (1) |
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9.6 Interest Rate Profiles |
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160 | (1) |
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161 | (5) |
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162 | (1) |
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9.7.2 Saving time using the CRITBINOM() function |
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162 | (1) |
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9.7.3 Saving time through VBA |
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163 | (3) |
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9.7.4 Achieving targeted ratings |
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166 | (1) |
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9.8 Variations on the BET |
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166 | (2) |
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9.8.1 Alternatives to BET analysis |
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168 | (1) |
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9.9 2009 Methodology Update |
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168 | (3) |
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10 Standard & Poor's Rating Methodology |
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171 | (38) |
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171 | (2) |
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10.2 Evaluating the Collateral |
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173 | (3) |
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10.2.1 The Portfolio Sheet |
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173 | (1) |
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174 | (1) |
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10.2.3 Asset Class (industry) Concentrations |
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175 | (1) |
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10.3 Modelling Recovery Rates |
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176 | (10) |
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10.3.1 General tiered asset-class recovery rates |
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177 | (2) |
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10.3.2 Asset-specific corporate recovery rates |
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179 | (5) |
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10.3.3 Covenant-lite loan recoveries |
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184 | (1) |
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10.3.4 Applying the recovery rates |
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185 | (1) |
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186 | (2) |
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188 | (4) |
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10.5.1 Standard default patterns |
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188 | (1) |
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10.5.2 Saw tooth default patterns |
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188 | (1) |
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10.5.3 Potential additional default patterns |
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189 | (1) |
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10.5.4 Timing of defaults based on WAL |
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190 | (1) |
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10.5.5 Timing of defaults based on rating |
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190 | (1) |
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10.5.6 Smoothing of defaults patterns |
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190 | (2) |
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10.6 Interest Rate Stresses |
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192 | (1) |
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193 | (1) |
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10.8 Additional S&P Modelling Criteria |
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194 | (2) |
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10.8.1 Fixed/floating rate asset mix |
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194 | (1) |
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10.8.2 Biased asset default |
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194 | (1) |
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10.8.3 Payment in kind assets |
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194 | (1) |
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10.8.4 Long-dated corporate assets |
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195 | (1) |
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10.8.5 Interest on assets |
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195 | (1) |
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10.8.6 Interest on interest |
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195 | (1) |
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10.8.7 Administration, trustee and collateral management fees |
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195 | (1) |
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10.9 Building the S&P Sheet and Related References |
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196 | (4) |
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196 | (2) |
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10.9.2 Rated CDO Tranches |
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198 | (1) |
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199 | (1) |
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199 | (1) |
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10.9.5 Scenario Default Rates |
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200 | (1) |
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10.9.6 Break-even Results |
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200 | (1) |
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10.10 Running the Stress Scenarios |
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200 | (9) |
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10.10.1 Break-even default rate percentiles |
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201 | (1) |
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10.10.2 Automating the stress scenario runs |
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201 | (5) |
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10.10.3 Achieving targeted ratings |
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206 | (1) |
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10.10.4 Recent changes in methodolgy |
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207 | (2) |
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11 Advanced Waterfall Modelling |
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209 | (26) |
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209 | (10) |
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11.1.1 Why are interest rate swaps necessary? |
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209 | (1) |
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11.1.2 What is an interest rate swap? |
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210 | (1) |
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11.1.3 Modelling interest rate swaps |
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211 | (1) |
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211 | (3) |
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214 | (1) |
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214 | (1) |
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215 | (1) |
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11.1.8 Payment under Hedge Agreements |
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216 | (1) |
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11.1.9 Uses and misuses of interest rate derivatives |
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216 | (3) |
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219 | (1) |
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11.3 Variable Funding Notes |
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219 | (2) |
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11.4 Liquidity Facilities |
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221 | (1) |
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11.5 Interest Reserve Accounts |
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221 | (1) |
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11.6 Other Structural Features |
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222 | (2) |
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11.6.1 Pro-rata payment of CDO liabilities |
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222 | (1) |
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222 | (1) |
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223 | (1) |
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11.6.4 Revolver facilities |
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223 | (1) |
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11.6.5 Enforcement waterfalls |
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224 | (1) |
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224 | (8) |
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11.7.1 Modelling combination notes |
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224 | (2) |
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11.7.2 Moody's approach to rating combo notes |
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226 | (5) |
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11.7.3 S&P approach to rating combo notes |
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231 | (1) |
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11.8 Collateral Manager Equity Analysis |
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232 | (3) |
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12 Maintaining the Cash Flow Model |
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235 | (12) |
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12.1 Adapting Your Model for Different Capital Structures |
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235 | (4) |
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12.1.1 Manually changing the model |
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235 | (1) |
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12.1.2 Manually removing tranches or steps |
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236 | (1) |
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12.1.3 Dynamic cell linking |
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237 | (1) |
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12.1.4 Dynamically linked structures |
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238 | (1) |
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239 | (4) |
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239 | (1) |
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12.2.2 Interest Waterfall |
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240 | (1) |
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12.2.3 Principal Waterfall |
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241 | (1) |
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241 | (2) |
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243 | (4) |
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12.3.1 Back of the envelope equity IRR calculations |
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243 | (1) |
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244 | (3) |
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13 Advanced Structuring Issues |
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247 | (6) |
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13.1 Projecting Accrued Interest |
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247 | (3) |
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13.1.1 Simple estimation of accrued interest |
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247 | (1) |
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13.1.2 Estimating accrued interest |
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248 | (2) |
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13.2 Collating Collateral Cash Flows |
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250 | (3) |
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14 Sourcing and Integrating Data From External Systems |
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253 | (4) |
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253 | (1) |
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253 | (2) |
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255 | (1) |
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14.4 Loan Level Information Sources |
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256 | (1) |
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15 Regulatory Applications of CDO Technology |
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257 | (20) |
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257 | (3) |
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257 | (1) |
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258 | (2) |
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15.2 Regulatory Capital Requirements for CDO Notes |
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260 | (3) |
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15.3 The Standardized Approach for CDOs |
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263 | (5) |
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15.3.1 Liquidity facilities |
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264 | (1) |
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15.3.2 Early amortization |
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265 | (2) |
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15.3.3 Credit risk mitigation |
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267 | (1) |
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15.4 The Internal Ratings-Based Approach for CDOs |
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268 | (1) |
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15.5 The Internal Ratings-Based Approach for CDOs: The Ratings-Based Approach |
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269 | (1) |
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15.6 The Internal Ratings-Based Approach for CDOs: The Supervisory Formula Approach |
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270 | (2) |
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15.7 The Internal Ratings-Based Approach: Liquidity Facilities, Overlapping Exposures, Credit Risk Mitigation and Early Amortization Features |
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272 | (2) |
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15.7.1 Liquidity facilities and overlapping exposures |
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272 | (1) |
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15.7.2 Credit risk mitigation |
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273 | (1) |
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15.7.3 Early amortization features |
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273 | (1) |
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15.8 Supervisory Provisions |
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274 | (1) |
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274 | (3) |
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277 | (50) |
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277 | (5) |
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278 | (1) |
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16.1.2 Default correlation risk |
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278 | (1) |
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16.1.3 Loss given default/recovery risk |
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278 | (1) |
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16.1.4 Interest rate risk |
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279 | (1) |
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279 | (1) |
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279 | (1) |
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16.1.7 Replacement/reinvestment risk |
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279 | (1) |
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280 | (1) |
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16.1.9 Termination: optional and event of default (EOD) |
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280 | (1) |
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16.1.10 CDO2 and structured finance issues |
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280 | (1) |
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16.1.11 Manager expertise and experience |
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281 | (1) |
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281 | (1) |
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16.2 Basic Valuation Approaches |
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282 | (1) |
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16.2.1 Traditional underwriter viewpoint |
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282 | (1) |
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16.2.2 Fundamental cash flow analysis |
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282 | (1) |
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282 | (1) |
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282 | (1) |
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16.3 Traditional Underwriter Analysis |
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283 | (9) |
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16.3.1 Modelling requirements |
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284 | (8) |
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16.3.2 Extending the number scenarios |
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292 | (1) |
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16.4 Fundamental Cash Flow Analysis |
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292 | (5) |
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295 | (1) |
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295 | (1) |
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295 | (1) |
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16.4.4 Cohorts/transition matrices |
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296 | (1) |
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16.5 Using Rating Agency Models |
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297 | (18) |
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297 | (1) |
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16.5.2 Using S&P CDO Evaluator™ |
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298 | (1) |
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299 | (1) |
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300 | (1) |
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16.5.5 CDO Evaluator™ Template |
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300 | (1) |
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301 | (1) |
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16.5.7 Detailed cash flow generation sheet |
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302 | (4) |
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306 | (1) |
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306 | (3) |
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16.5.10 Agency Simulations Sheet |
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309 | (5) |
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314 | (1) |
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16.5.12 Modifications to the Cash Flow Model |
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|
315 | (1) |
|
|
|
315 | (10) |
|
|
|
315 | (1) |
|
16.6.2 Generating defaults |
|
|
316 | (1) |
|
|
|
317 | (1) |
|
|
|
317 | (1) |
|
16.6.5 Sources of transition matrices |
|
|
318 | (1) |
|
16.6.6 Scaling the transition matrix |
|
|
319 | (2) |
|
|
|
321 | (4) |
|
|
|
325 | (1) |
|
|
|
325 | (2) |
|
|
|
327 | (2) |
| Index |
|
329 | |