Variance ratios, structural breaks and nonrandom walk behaviour in the Indian stock returns
The paper investigates the issue of behaviour of stock returns in India. A non-parametric variance ratio test is used to examine the issue. Largely the results indicate non-random walk behaviour of Indian stock market. However, the sub-sample analysis of stock returns based on structural breaks show an increasing mean-reverting tendency after occurrence of structural breaks in the series. The events associated with break dates mainly are volatile exchange rate movements, oil shocks, internet bubble burst, sub-prime crisis, global economic meltdown and political uncertainties. Rejection of random walk is relatively stronger for smaller and medium indices than larger indices implying that market capitalization and liquidity play a greater role in improving efficiency of the market.
|Date of creation:||2012|
|Date of revision:|
|Publication status:||Published in Journal of Business & Economic Studies 18.2(2012): pp. 62-81|
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