This paper examines the hypothesis that both stock returns and volatility are asymmetrical functions of past information derived from domestic and US stock-market news. By employing a double-threshold regression GARCH model to investigate four major index-return series, we find significant evidence to sustain the asymmetrical hypothesis of stock returns. Specifically, evidence strongly supports...

This paper investigates the relationship between aggregate stock market trading volume and the serial correlation of daily stock returns. For both stock indexes and individual large stocks, the first-order daily return autocorrelation tends to decline with volume. The paper explains this phenomenon using a model in which risk-averse "market makers" accommodate buying or selling pressure from "l...

this paper investigates asset growth pricing in firm-level cross section stock return in tehran stock exchange for the period from 1379 to 1389. in order to test cross section stock return predictability by the firm's asset growth, the relation between asset growth rate and subsequent stock return is examined in a sample of 280 firms using portfolio analysis approach and fama-macbeth (1973...

Objective: Market anomalieschange with economic conditions, stock markets, selected samples, time periods and differences between industries. Revision of past forecasts leads to forecast error. The revisions result from new information. On the other hand, some managers slowly revise their forecasts in responding to new information. Therefore, the purpose of this research is to investigate the r...

Modelling stock return generating process as a single factor model, we show analytically that the relation between idiosyncratic volatility measured as variance of the residuals and expected stock return in the cross-section may be represented by a parabola that opens to the left and has horizontal axis. This relation is uncovered for stocks of similar volatility and no abnormal return. The sen...