This paper presents and compares several time-series models for returns of broadbased stock indices. These models nest a nonlinear asymmetric GARCH (NGARCH) model as a special case. Some of these models are empirically motivated ad-hoc specifications others are derived from a representative...

This paper examines unique cultural features associated with the Japanese calendar known as rokuyo, which classifies days into six categories of varying levels of favorable/unfavorable sentiment days. Prior to the internationalization of Japanese financial markets in the early 1980s, rokuyo has...

A growing body of literature suggests that investor sentiment affects stock prices both at the firm level and at the market level. This study examines the relationship between investor behavior and stock returns focusing on Japanese margin transactions using weekly data from 1994 to 2003. Margin...

Building on prior literature which suggests that investors in most countries, but not Japan, are subject to behavioural biases that cause momentum, and informed by the shared cultural values in Japan which leans heavily in favour of collective action, this paper asks whether stock return...