This document summarizes a survey of US Fortune 500 company managers conducted in 1987 regarding their views on capital structure theory. The survey found that managers generally follow a financing hierarchy preferring internal equity, straight debt, convertible debt, and then external equity. Managers evaluated investment and financing decisions simultaneously and felt the most important inputs were projected cash flows from assets and avoiding dilution of shareholders. Static tradeoff models were found to be the least supported by managers. Tax factors were also not the primary determinants of capital structure decisions. Financial flexibility and long-term survivability were the most important planning principles for managers.