We study the optimal dynamic portfolio exposure to predictable default risk, taking inspiration from the search for yield by means of defaultable assets observed before the 2007-2008 crisis and in its aftermath. Under no arbitrage, default risk is compensated by an yield pickup that can strongly attract aggressive investors via an investment-horizon effect in their optimal non-myopic portfolios. We show it by stating the optimal dynamic portfolio problem of Kim and Omberg (1996) for a defaultable risky asset and by rigorously proving the existence of nirvana-type solutions. We achieve such a contribution to the portfolio optimization literature by means of a careful, closed form-yielding adaptation to our defaultable-asset setting of the general convex duality approach of Kramkov and Schachermayer (1999, 2003).

Reaching Nirvana with a defaultable asset? / Battauz, Anna; DE DONNO, Marzia; Sbuelz, Alessandro. - In: DECISIONS IN ECONOMICS AND FINANCE. - ISSN 1129-6569. - 40:(2017), pp. 31-52. [10.1007/s10203-017-0192-x]

Reaching Nirvana with a defaultable asset?

DE DONNO, Marzia;
2017-01-01

Abstract

We study the optimal dynamic portfolio exposure to predictable default risk, taking inspiration from the search for yield by means of defaultable assets observed before the 2007-2008 crisis and in its aftermath. Under no arbitrage, default risk is compensated by an yield pickup that can strongly attract aggressive investors via an investment-horizon effect in their optimal non-myopic portfolios. We show it by stating the optimal dynamic portfolio problem of Kim and Omberg (1996) for a defaultable risky asset and by rigorously proving the existence of nirvana-type solutions. We achieve such a contribution to the portfolio optimization literature by means of a careful, closed form-yielding adaptation to our defaultable-asset setting of the general convex duality approach of Kramkov and Schachermayer (1999, 2003).
2017
Reaching Nirvana with a defaultable asset? / Battauz, Anna; DE DONNO, Marzia; Sbuelz, Alessandro. - In: DECISIONS IN ECONOMICS AND FINANCE. - ISSN 1129-6569. - 40:(2017), pp. 31-52. [10.1007/s10203-017-0192-x]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2825920
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