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Uncertain risk parity

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  • Anish R. Shah

Abstract

Risk parity is a portfolio construction technique that scales sections of a portfolio (eg, stocks, bonds, currencies, commodities) so that forecasted contributions to net portfolio risk match the budget. Because risks are measured from a point estimate of covariance, the method is subject to problems of estimation error. This paper treats covariance as uncertain in order to find a risk parity weighting that does not count on perfectly optimized hedges and is robust to changes in regime. Separately, of general interest are the uncertain risk contributions calculated en route. Reporting a portfolio’s uncertain risk decomposition puts a band around numbers and reveals fragility. For example, a market could seem hedged in a long–short portfolio but surface as the biggest risk when parameters are considered across their error range.

Suggested Citation

  • Anish R. Shah, . "Uncertain risk parity," Journal of Investment Strategies, Journal of Investment Strategies.
    • Handle: RePEc:rsk:journ6:7827951
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