1. Figure out the losses on underlying assets: in our case 10% 2. Allocate loss to original senior tranche: Senior: 0.80 x 0.10 = 8% 3. Allocate losses to mezzanine tranche: O The mezzanine tranche has an allocation of 15%, however, since it is subordinate (waterfall payment system), it only absorbs losses after the senior tranche has absorbed its 80% share. Calculation: 15% - 8% = 7% 4. Break down the mezzanine tranche into CDO tranches: The senior CDO tranche: 0.65 x 7% = 4.55 The mezzanine tranche: 0.25 x 7% = 1.75 The equity tranche: 7% - 4.55% -1.75% = 0.7% (or 0.1 x 7% = 0.7%) O Equity Tranche (5%) Not Rated O O

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Calculating losses in tranches
To the right is a graphic representation of a CDO.
Lets say there is a loss of 10% on the underlying
assets, in our case subprime mortgages, how do
you calculate losses in different tranches
1. Figure out the losses on underlying assets:
in our case 10%
2. Allocate loss to original senior tranche:
O Senior: 0.80 x 0.10 = 8%
3. Allocate losses to mezzanine tranche:
O
O
4. Break down the mezzanine tranche into CDO tranches:
The senior CDO tranche: 0.65 x 7% = 4.55
O
Assets
O
Senior Tranche (80%)
AAA
Ö
Mezzanine Tranche (15%)
BBB
The mezzanine tranche has an allocation of 15%, however, since it is subordinate
(waterfall payment system), it only absorbs losses after the senior tranche has
absorbed its 80% share. Calculation: 15% - 8% = 7%
20
Equity Tranche (5%)
Not Rated
The mezzanine tranche: 0.25 x 7% = 1.75
The equity tranche: 7% - 4.55% -1.75% = 0.7% (or 0.1 x 7% = 0.7%)
The mezzanine tranche is
repackaged with other
mezzanine tranches
Senior Tranche (65%)
AAA
Mezzanine Tranche
(25%) BBB
Equity Tranche (10%)
Transcribed Image Text:Calculating losses in tranches To the right is a graphic representation of a CDO. Lets say there is a loss of 10% on the underlying assets, in our case subprime mortgages, how do you calculate losses in different tranches 1. Figure out the losses on underlying assets: in our case 10% 2. Allocate loss to original senior tranche: O Senior: 0.80 x 0.10 = 8% 3. Allocate losses to mezzanine tranche: O O 4. Break down the mezzanine tranche into CDO tranches: The senior CDO tranche: 0.65 x 7% = 4.55 O Assets O Senior Tranche (80%) AAA Ö Mezzanine Tranche (15%) BBB The mezzanine tranche has an allocation of 15%, however, since it is subordinate (waterfall payment system), it only absorbs losses after the senior tranche has absorbed its 80% share. Calculation: 15% - 8% = 7% 20 Equity Tranche (5%) Not Rated The mezzanine tranche: 0.25 x 7% = 1.75 The equity tranche: 7% - 4.55% -1.75% = 0.7% (or 0.1 x 7% = 0.7%) The mezzanine tranche is repackaged with other mezzanine tranches Senior Tranche (65%) AAA Mezzanine Tranche (25%) BBB Equity Tranche (10%)
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