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Do Stock Prices Impact Consumption and Interest Rate in South Africa? Evidence from a Time-Varying Vector Autoregressive Model

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  • Goodness C. Aye

    () (Department of Economics, University of Pretoria, South Africa)

  • Rangan Gupta

    () (Department of Economics, University of Pretoria)

  • Mampho P. Modise

    () (Department of Economics, University of Pretoria)

Abstract

This paper investigates the existence of spillovers from stock prices onto consumption and the interest rate for South Africa using a time-varying vector autoregressive (TVP-VAR) model with stochastic volatility. In this regard, we estimate a three-variable TVP-VAR model comprising of real consumption growth rate, the nominal three-months Treasury bill rate and the growth rate of real stock prices. We find that the impact of a real stock price shocks on consumption is in general positive, with large and significant effects observed at the one-quarter ahead horizon. However, there is also evidence of significant negative spillovers from the stock market to consumption during the financial crisis, at both short and long-horizons. Monetary policy response to stock price shocks has been persistent, and strong especially post-the financial liberalization in 1985, but became weaker during the financial crisis. Overall, we provide evidence of significant time-varying spillovers on consumption and interest rate from the stock market.

Suggested Citation

  • Goodness C. Aye & Rangan Gupta & Mampho P. Modise, 2012. "Do Stock Prices Impact Consumption and Interest Rate in South Africa? Evidence from a Time-Varying Vector Autoregressive Model," Working Papers 201224, University of Pretoria, Department of Economics.
  • Handle: RePEc:pre:wpaper:201224
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    Cited by:

    1. Rangan Gupta & Charl Jooste & Kanyane Matlou, 2014. "A time-varying approach to analysing fiscal policy and asset prices in South Africa," Journal of Financial Economic Policy, Emerald Group Publishing, vol. 6(1), pages 46-63, April.
    2. Beatrice D. Simo-Kengne & Stephen M. Miller & Rangan Gupta & Mehmet Balcilar, 2016. "Evolution of the Monetary Transmission Mechanism in the US: the Role of Asset Returns," The Journal of Real Estate Finance and Economics, Springer, vol. 52(3), pages 226-243, April.
    3. Paetz, Michael & Gupta, Rangan, 2016. "Stock price dynamics and the business cycle in an estimated DSGE model for South Africa," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 44(C), pages 166-182.
    4. Alexander Zimper, 2014. "The minimal confidence levels of Basel capital regulation," Journal of Banking Regulation, Palgrave Macmillan, vol. 15(2), pages 129-143, April.
    5. Emmanuel Owusu-Sekyere, 2016. "The impact of monetary policy on household consumption in South Africa. Evidence from Vector Autoregressive Techniques," Working Papers 598, Economic Research Southern Africa.
    6. Chance Ngamanya Mwabutwa & Nicola Viegi & Manoel Bittencourt, 2016. "Evolution Of Monetary Policy Transmission Mechanism In Malawi: A Tvp-Var Approach," Journal of Economic Development, Chung-Ang Unviersity, Department of Economics, vol. 41(1), pages 33-55, March.
    7. Goodness C. Aye & Mehmet Balcilar & Rangan Gupta & Charl Jooste & Stephen M. Miller & Zeynel Abidin Ozdemir, 2012. "Fiscal Policy Shocks and the Dynamics of Asset Prices: The South African Experience," Working Papers 1211, University of Nevada, Las Vegas , Department of Economics.
    8. Gupta, Rangan & Modise, Mampho P., 2013. "Does the source of oil price shocks matter for South African stock returns? A structural VAR approach," Energy Economics, Elsevier, vol. 40(C), pages 825-831.
    9. Nikolaos Antonakakis & Mehmet Balcilar & Rangan Gupta & Clement Kyei, 2016. "Components of Economic Policy Uncertainty and Predictability of US Stock Returns and Volatility: Evidence from a Nonparametric Causality-in-Quantile Approach," Working Papers 201639, University of Pretoria, Department of Economics.
    10. Rangan Gupta & Xiaojin Sun, 2016. "Housing Market Spillovers in South Africa: Evidence from an Estimated Small Open Economy DSGE Model," Working Papers 201641, University of Pretoria, Department of Economics.
    11. Goodness C. Aye & Rangan Gupta & Alain Kaninda & Wendy Nyakabawo & Aarifah Razak, 2013. "House Price, Stock Price and Consumption in South Africa: A Structural VAR Approach," Working Papers 201309, University of Pretoria, Department of Economics.

    More about this item

    Keywords

    Bayesian Inference; Consumption; Stock Price; Markov Chain Monte Carlo; Monetary Policy; Structural Vector Autoregression; Stochastic Volatility; Time-Varying Paremeter;

    JEL classification:

    • C11 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Bayesian Analysis: General
    • C15 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Statistical Simulation Methods: General
    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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