Ball and Shivakumar (2006) and Anderson et al. (2009) suggest that the valuation parameters are affected from signs of fi rm operating performance. Therefore, we also estimate the valuation model for a profi t-fi rm subsample. The results show that the valuation and forecasting parameters of the accrual component are not signifi cantly different while the valuation parameter of the cash fl ow component is signifi cantly smaller than its forecasting parameter, suggesting that stock prices accurately refl ect the persistence of the accrual component but inaccurately the higher persistence of the cash fl ow component. The results also suggest that Thai stock markets perceive that the cash fl ow component is less persistent than the accrual component