N@N

NEW YORK--([ BUSINESS WIRE ])--CYS Investments, Inc. (NYSE: CYS) (the "Company") announced that it closed a public offering of 28,750,000 shares of its common stock, including 3,750,000 shares pursuant to an option that was fully exercised by the underwriters, at a public offering price of $13.28 per share for total net proceeds of approximately $377,287,500, after deduction of underwriting discounts and commissions and estimated expenses.

The Company intends to invest the net proceeds of the offering in Agency RMBS and for general corporate purposes.

Credit Suisse Securities (USA) LLC, Barclays Capital Inc., Deutsche Bank Securities Inc., UBS Securities LLC, and BofA Merrill Lynch are joint bookrunners for the offering.

About CYS Investments, Inc.

CYS Investments, Inc. is a specialty finance company that invests on a leveraged basis in residential mortgage pass-through securities for which the principal and interest payments are guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae. CYS Investments has elected to be taxed as a real estate investment trust for federal income tax purposes.

Forward Looking Statements Disclaimer

This press release contains "forward-looking statements" made pursuant to the safe harbor provisions of the Private Securities Reform Act of 1995, including with regard to the anticipated use of proceeds. Forward-looking statements typically are identified by use of the terms such as "believe," "expect," "anticipate," "estimate," "plan," "continue," "intend," "should," "may" or similar expressions. Forward-looking statements are based on our beliefs, assumptions and expectations of our future performance, taking into account all information currently available to us. No assurance can be given that the net proceeds of the offering will be used as indicated. Consummation and the terms of the offering, and the application of the net proceeds of the offering, are subject to numerous possible events, factors and conditions, many of which are beyond the control of the Company and not all of which are known to us, including, without limitation, market conditions and those described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2010 and our Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, which have been filed with the Securities and Exchange Commission. All forward-looking statements speak only as of the date on which they are made. New risks and uncertainties arise over time, and it is not possible to predict those events or how they may affect us. Except as required by law, we are not obligated to, and do not intend to, update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.