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Is the Hong Kong Dollar Exchange Rate "Bounded" in the Convertibility Zone?


  • Cho-Hoi Hui

    (Research Department, Hong Kong Monetary Authority)

  • Tom Fong

    (Research Department, Hong Kong Monetary Authority)


The empirical results show that after the introduction of the three refinements to the Linked Exchange Rate system in May 2005 the Hong Kong dollar follows a bounded process that is consistent with a fully credible exchange rate band. The bounded process will limit the movements of the exchange rate to between the strong- and weak-side limits because its variance vanishes at the Convertibility Undertakings making it inaccessible to the limits. The Hong Kong dollar does not show any strong tendency to revert towards the centre of the Convertibility Zone. This is perhaps not surprising as there have been no interventions in the foreign exchange market since May 2005. There may be few forces or incentives for market participants to drive the exchange rate towards 7.80.

Suggested Citation

  • Cho-Hoi Hui & Tom Fong, 2007. "Is the Hong Kong Dollar Exchange Rate "Bounded" in the Convertibility Zone?," Working Papers 0713, Hong Kong Monetary Authority.
  • Handle: RePEc:hkg:wpaper:0713

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    References listed on IDEAS

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    Cited by:

    1. Chen Yu-Fu & Funke Michael & Glanemann Nicole, 2013. "Off-the-record target zones: theory with an application to Hong Kong’s currency board," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 17(4), pages 373-393, September.
    2. Lera, Sandro Claudio & Sornette, Didier, 2016. "Quantitative modelling of the EUR/CHF exchange rate during the target zone regime of September 2011 to January 2015," Journal of International Money and Finance, Elsevier, vol. 63(C), pages 28-47.
    3. Ledenyov, Dimitri O. & Ledenyov, Viktor O., 2015. "Wave function method to forecast foreign currencies exchange rates at ultra high frequency electronic trading in foreign currencies exchange markets," MPRA Paper 67470, University Library of Munich, Germany.
    4. Laurence Fung & Ip-wing Yu, 2007. "Assessing the Credibility of The Convertibility Zone of The Hong Kong Dollar," Working Papers 0719, Hong Kong Monetary Authority.
    5. Dong He & Frank Leung & Philip Ng, 2007. "How Do Macroeconomic Developments in Mainland China Affect Hong Kong's Short-term Interest Rates?," Working Papers 0717, Hong Kong Monetary Authority.

    More about this item


    Linked Exchange Rate system; target zone; mean reversion; bounded process;

    JEL classification:

    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing

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