Takaishi, Tetsuya - In: Journal of risk and financial management : JRFM 15 (2022) 1, pp. 1-12
This study investigates the time evolution of market efficiency in the Japanese stock markets, considering three indices: Tokyo Stock Price Index (TOPIX), Tokyo Stock Exchange Second Section Index, and TOPIX-Small. The Hurst exponent reveals that the Japanese markets are inefficient in their...