Arbeitspapier
Weighted Sums of Subexponential Random Variables and Asymptotic Dependence between Returns on Reinsurance Equities
Suppose are independent subexponential random variables with partial sums. We show that if the pairwise sums of the ’s are subexponential, then is subexponential and . The result is applied to give conditions under which as , where are constants such that is a.s. convergent. Asymptotic tail probabilities for bivariate linear combinations of subexponential random variables are given. These results are applied to explain the joint movements of the stocks of reinsurers. Portfolio investment and retrocession practices in the reinsurance industry expose different reinsurers to the same subexponential risks on both sides of their balance sheets. This implies that reinsurer’s equity returns can be asymptotically dependent, exposing the industry to systemic risk.
- Sprache
-
Englisch
- Erschienen in
-
Series: Tinbergen Institute Discussion Paper ; No. 04-102/2
- Klassifikation
-
Wirtschaft
- Thema
-
Subexponentiality
regular variation
systemic risk
asymptotic dependence
Rückversicherung
Risikomodell
Versicherungsmathematik
- Ereignis
-
Geistige Schöpfung
- (wer)
-
Geluk, J.L.
de Vries, C.G.
- Ereignis
-
Veröffentlichung
- (wer)
-
Tinbergen Institute
- (wo)
-
Amsterdam and Rotterdam
- (wann)
-
2004
- Handle
- Letzte Aktualisierung
-
10.03.2025, 11:42 MEZ
Datenpartner
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Objekttyp
- Arbeitspapier
Beteiligte
- Geluk, J.L.
- de Vries, C.G.
- Tinbergen Institute
Entstanden
- 2004
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