本文主旨在探討資本支出與公司股票報酬間之關係,利用學者Jensen(1986)提出的自由現金流量假說和學者Miller and Rock(1985)資訊不對稱假說來研究股票報酬之關聯。 本文以台灣上市公司為研究對象,蒐集從2001至2011年公司財務報表中所認列研究發展費用,其符合資本支出異常增加之樣本資料,並將樣本分為電子業與非電子業,資料來源為台灣經濟新報資料庫系統(TEJ)。模型藉由Fama and French三因子模型以Carhart(1997)四因子模型來加以探討,最後再以Panel Data之方式作穩固性檢定,檢驗資本支出異常增加和未來股票報酬間的關係。
This paper applies Free Cash Flow and Information Asymmetry Hypotheses to investigate whether managers pursuit their private benefits by using capital investment expenditure (hereafter CI) increases or not, and explore whether managers drecrease CI as asymmetric information in order to pay more dividends. Cnsequently, the present study investigate the effect of CI increases on abnormal stock returns of Taiwanese listed firms. The empirical results show that full samples with the whole study period and the financial crisis period, regardless of the three-factor model, four-factor model or panel data approach, the effects of increase in CI on stocks returns is positive, and the CI-spread is negative. This reveals that samples are in favor of the hypothesis of asymmetric information. However, the electronics industry in the entire study period and the financial crisis period, the expenditure of low CI tends to be free cash flow hypothesis, that of high CI are more in favor of the hypothesis of asymmetric information.