What is it about?
Allocating risk properly to subunits is crucial for performance evaluation and internal capital allocation of portfolios held by banks, insurance companies, investment funds and other entities subject to financial risk. Using coherent measures of risk (Expected Shortfall being a prominent example) there is a diversification effect that should be allocated in a fair way. We show a way to extend risk allocation for illiquid portfolios.
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Why is it important?
We show that there is always a stable way to allocate the risk of illiquid portfolios, where no subset (coalition) of the subunits can complain about the allocation.
Perspectives
The paper is part of a bigger project. We have analyzed stability and incentive compatibility in the paper "On the impossibility of fair risk allocation", whereas to help in applications, we have compared 7 methods in terms of 10 properties in "Properties and comparison of risk capital allocation methods". We have also considered illiquid portfolios in "Fair risk allocation in illiquid markets".
Dr Péter Csóka
Read the Original
This page is a summary of: Risk allocation under liquidity constraints, Journal of Banking & Finance, December 2014, Elsevier,
DOI: 10.1016/j.jbankfin.2014.08.017.
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