Home

>

Modelling exchange rate volatility dynamics: Empirical evidence from South Africa

In this paper, we extend the literature on modelling exchange rate volatility in South Africa by estimating a range of models, including some that attempt to account for structural breaks and long memory. We examine the key nominal exchange rates of the South African rand and replicate common findings in the literature; particularly that volatility is ‘persistent’. We investigate whether this ‘persistence’ is due to structural breaks or long memory, and the extent of asymmetric responses of the rand to ‘good news’ and ‘bad news’. Our results show that while long memory is evident in the actual processes, a structural break analysis reveals that this feature is partially explained by unaccounted shifts in volatility regime; the most striking finding is the remarkable fall in the estimates of volatility persistence when considerably more structural breaks than those identified in recent studies are detected and integrated into the generalised autoregressive conditional heteroscedasticity (GARCH) framework. Furthermore, the asymmetrical GARCH model results provide evidence of leverage effects, indicating that negative shocks imply a higher next period volatility than positive shocks. The empirical results also shed light on the timing and likely triggers of volatility regime switching.

Working paper 705
1 August 2017
SHARE THIS Working Paper PUBLICATION:

Related South Africa’s Cities and Growth Spatial Challenges and Policy Interventions Content

Request for Proposals: The role of cities as drivers of growth and employment
Background Urbanization in South Africa is expected to reach 80% by...
Call for Work
South Africa’s future will be decided in our cities
Discussion Document 14 South Africa’s cities face multiple, overlap...
Dieter von Fintel, Justin Visagie, Ivan Turok, Takwanisa Machemedze, Claus Rabe, Sebastian Galiani, Edward Glaeser
Discussion Document
Monitoring South Africa’s metropolitan economies: A survey of the data landscape
Discussion Document 13 Disparities in data across different metropo...
Dieter von Fintel
Discussion Document
Cities, productivity and Jobs in SA: Problems and potential
Discussion Document 12 Cities contribute to national prosperity bec...
Ivan Turok, Justin Visagie
Discussion Document
Place-based economic policies: international lessons for South Africa
Discussion Document 11 Place-based policies are designed to support...
Harris Selod, Claus Rabe
Discussion Document
What luminosity data can and cannot reveal about South Africa’s urban economies
Discussion Document 10 As novel types of data are becoming availabl...
Takwanisa Machemedze
Discussion Document
Crime: A policy-oriented survey
Discussion Document 9 South Africa has a reputation for having high...
Sebastian Galiani
Discussion Document
Virtual CDE Workshop on SA Cities and Growth
Urban economics has provided powerful insights into how the charact...
Workshop

Search Resources

Ground Floor Brookside Building
11 Imam Haron Road
Claremont, 7700
Cape Town

PostNet Suite # 109
Private Bag X1005
Claremont 7735
Cape Town

Get Social