Prior research documents that information asymmetry increases the sensitivity of investment to internal funds and thus affects a firm’s investment or financing decisions. Therefore, firms with higher investment-cash flow sensitivity are more likely to voluntarily disclose in order to reduce information asymmetry and cost of capital. This study views conference calls as a voluntary disclosure mechanism and examines how investment-cash flow sensitivity influences the likelihood and frequency of conference calls. The results show that, due to higher information risk and financing cost, firms with higher investment-cash flow sensitivity are more likely to hold conference calls than those with lower investment-cash flow insensitivity firms.