|(Millions, except per common share data)|
|For the Year Ended||2017||2016||Change|
|Total Company Expense Ratio||19.9%||19.1%||80 bps|
|After-tax Net Income Margin||3.1%||3.6%||(50) bps|
|At Year End|
|Total Aetna Shareholders’ Equity||$15,580||$17,881||(13)%|
|Common Shares Outstanding||326.8||351.7||(7)%|
|Per Common Share|
Additional information on our 2018 financial performance is available in our Annual Report on Form 10-K, which is available from the SEC here.
1 Net income refers to net income attributable to Aetna reported in Aetna’s Consolidated Statements of Income in accordance with U.S. generally accepted accounting principles. Unless otherwise indicated, all references in this document to net income and net income per share exclude amounts attributable to non-controlling interests.