I examine the return predictability of the Indonesian stock-market during 1984–2016, in rolling windows, using an automatic portmanteau test and an automatic variance ratio. I find that the market's efficiency and predictability vary over time — consistent with the adaptive market hypothesis...

We investigate the degree of return predictability of lodging/resort real estate investment trusts (REITs) from January 1994 to May 2016. We test the Martingale hypothesis by using linear (automatic portmanteau and automatic variance ratio with rolling windows) and nonlinear tests (generalized...

This paper tests weak-form market efficiency of CIVETS (Colombia, Indonesia, Vietnam, Egypt, Turkey and South Africa) over the period 2002-2012. We apply unit root tests and variance ratio tests to investigate if these equity markets follow a random walk. The empirical results indicate that our...