According to the findings of Elton et al. (1999) study, the stock return consists of several components which among them is the cash flow shock return. This means that in prior research, stock return variable were investigated regardless of cash flow shocks. This study investigated the influence of cash flow uncertainty and working capital on non-cash flow shock returns. In this regard, data were gathered from a sample of companies listed on Tehran Stock Exchange from 2004 to 2013. The research hypotheses were examined by multiple regressions. The research results showed that there is a significant relationship between working capital and non-cash flow shock returns. In addition, there is no significant relationship between cash flow uncertainty and non-cash flow shock returns.