We obtained firm level financial and ownership data from "Worldscope" database over the period of 1995-2005 for all the non-financial listed Australian firms. Consistent with the previous empirical studies, we excluded the financial firms. Previous studies suggest that liquidity of financial firms is hard to assess, and furthermore financial firms are constrained by regulations to maintain a specific cash reserves all the time. The final sample that met the data requirement of at least three years of consecutive financial and ownership data consisted of an unbalanced panel dataset of 389 firms from 1995 to 2005. We argue that liquidity concerns and optimal cash holdings decisions affect firms' solvency which influence firms' capital structure choices ([25] Gryglewicz, 2011). Therefore, we also examined the changes in the sources of cash over the years. We obtained the New Equity, New Long Term Debt, Repurchase of Common/Preferred Equity, Common Dividends, Research & Development, and Capital Expenditure data from Worldscope. We calculated New Equity Issuance as the total new common shares issued by a firm i in year t divided by net assets in year t -1; New Long Term Debt as the total new long-term debt issuance issued by a firm i in year t divided by net assets in year t -1, and Repurchase of Common/Preferred Equity as the purchase of total common/preferred equity by a firm i in year t divided by net assets in year t -1.