Which is the most important to monitor; cost center, profit center or investment center and why?

If you were the Chief Executive Officer of a multi-branch or multi-departmental company, your company may have cost centers, profit centers, and investment centers. What kind of reports and data would be most important for you to review and analyze on a daily, weekly, and monthly basis, and why? Which center is the most important to you, from a managerial standpoint?