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Sovereign Debt Restructuring: risk management and financial innovation
Stavros A. ZENIOS
University of Cyprus
Senior Fellow, The Wharton School, USA
(With Andrea Consiglio and AshokaMody)
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The devil is in the tails
www.voxeu.org August 2015
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Outline
Tactical vs strategic debt sustainability
Risk management for debt restructuring
Case study of Greece
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Sovereign contingent debt
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The issues in sovereign debt crises
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Facts on sovereign debt
Reminders of Hyman Minsky (1919—1996):
Debt is fragile
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Tactical vs Strategic debt sustainability
Tactical: Short-term
End of an IMF program, under program conditions
Given projections (wishes) does debt decline?
Strategic: Long-term
Past IMF program
Under market uncertainties
Does debt decline with probability 95%?
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The issues in sovereign debt crises
Risk management has not been part of analysis
Operational models are missing
“Need for development of criteria for “optimal” debt restructuring process”
(Wright 2012, Harvard Business Law Review)
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Risk management for debt restructuring
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Debt dynamics
Re-finance debt of different maturities
Look at alternative debt stock flows
Risk management for debt restructuring
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Risk management for debt restructuring
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Scenario dependent debt dynamics
Using Debt-to-GDP ratio
Risk management for debt restructuring
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D is the term structure of debt (multiple issues)
r is the term structure of sovereign rates
NB (and GDP) can be state-dependent
SF can be state-contingent
Scenario tree integrates economic and financial risk factors
Objective and risk neutral probabilities(Consiglio, Carollo, Zenios, Quantitative Finance, in print)
Risk management for debt restructuring
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Risk management for debt restructuring
DeaR: Debt-at-Risk
At each terminal node:
Conservation of flow at each node:
xmj – nominal value of debt instrument j issued at node m
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Risk management for debt restructuring
(Rockafellar and Uryasev 2000)
Conditional Debt-at-Risk
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Risk management for debt restructuring
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The issues in sovereign debt crises
Key parameters (Das et al 2012)
Face and market value of bonds or loansInterest rate and coupon (fixed, flexible, step-up, linked)Amortization scheduleCurrency of denominationEnhancements such as embedded options or collateralLegal clauses (CAC, exit consents)
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Case study of Greece
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Case study of Greece
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Case study of Greece
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Case study of Greece
4.0
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7.0
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ates
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3m 6m 12m 24m 36m 60m 120m 180m 360m
Inte
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)
Maturities
Initial term structure
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Case study of Greece: current debt situation
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Case study of Greece: IMF projections
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Primary surplus 1.5% and improved country growth assuming fiscal multiplier 0.8
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Interest rate concessions
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Debt extension
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Sovereign CoCo:contingent convertible debt
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Sovereign CoCo
A sovereign debt instrument with (i) a built-in trigger to allow, but not require, a standstill of payments
for a fixed period of time (ii) that is activated when an indicator breaches a threshold (iii) becomes effective after the sovereign enters a program with IMF (iv)makes the triggered bond senior to subsequently issued debt
Our suggestion: 30-day average CDS spreads exceed 400bp.
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0
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Ex ante treatment of sovereign risk
Address creditor moral hazard
Deal with “neglected risks”
Contingent contracts
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Risk management for debt restructuring with CoCo
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Conclusions
The devil is in the tails
Ex post, risk management for sovereign debt
Ex ante, uncertainty part of contingent contract
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Conclusions
No matter how misguided the negotiating tactics of the Greek government might have been,
debt was unsustainable before they came to power.
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ReferencesConsiglio, A. and Zenios, S.A.Risk management optimization for sovereign debt restructuringhttp://papers.ssrn.com/sol3/papers.cfm?abstract_id=2478380Greek debt sustainability: the devils is in the tailshttp://www.voxeu.org/article/greek-‐debt-‐sustainability-‐devil-‐tails
Consiglio, A. and Mody, A. and Zenios, S.A. (in preparation)Contingent convertible bonds for sovereign debt risk management
Consiglio, Carollo and Zenios,A parsimonious model for generating arbitrage free scenario trees http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2362014