Enkhzul, Mendee; Jun, Sang-Gyung - In: Global business and finance review 26 (2021) 3, pp. 1-13
stock price randomness in Korean stock market. Design/methodology/approach: The random walk hypothesis has been tested for … many equity markets since Lo and MacKinley (1988) work, which proposes the variance ratio test for the random walk … random walk. Findings: Our main findings are as follows. Short selling increases variance ratios, suggesting that short …