A Collateralized Debt Obligation (CDO) is structured with fi…
A Collateralized Debt Obligation (CDO) is structured with five underlying bonds in its reference portfolio. The portfolio supports a senior Tranche A (rated AAA) and an Equity Tranche (first-loss piece). The CDO holds the following bonds: Bond Rating Notional (MM) Spread (bps) Bond 1 AAA [na] [spa] Bond 2 AA [nb] [spb] Bond 3 A [nc] [spc] Bond 4 BBB [nd] [spd] Bond 5 BB Remaining [spe] CDO Structure Tranche A (AAA): Senior, [tranchea]% of the notional, rated AAA. Equity Tranche: First-loss position, remaining percentage of the notional. Tasks Portfolio Expected Spread:Calculate the weighted average spread of the portfolio based on the five bonds. Tranche A Spread:Suppose the senior Tranche A is issued at [aaabps] bps spread to AAA investors. Equity Tranche Spread:Given the pooled portfolio spread you computed in part (1), and the spread promised to Tranche A investors in part (2), determine the implied spread that accrues to the Equity Tranche investors. Do not type % symbol. The spread should be stated in bps. Round to the nearest two decimals. (Hint: Think of the CDO structure as redistributing the portfolio spread between Tranche A and Equity investors in proportion to their notional weights. Disregard defaults and recovery risk for simplicity. Focus only on spread allocation.)
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