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П UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( D ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the year ended December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( D ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 001-34057 Delaware ( State or Other Jurisdiction of Incorporation or Organization ) AGNC INVESTMENT CORP AGNC INVESTMENT CORP . ( Exact name of registrant as specified in its charter ) 2 Bethesda Metro Center , 12th Floor thes Maryland 20814 ( Address of principal executive offices ) ( 301 ) 968-9315 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of Each Class Common Stock , par value $ 0.01 per share Depositary shares of 7.000 % Series C Fixed - to - Floating Rate Cumulative Redeemable Preferred Stock Depositary shares of 6.875 % Series D Fixed - to - Floating Rate Cumulative Redeemable Preferred Stock Depositary shares of 6.50 % Series E Fixed - to - Floating Rate Cumulative Redeemable Preferred Stock Depositary shares of 6.125 % Series F Fixed - to - Floating Rate Cumulative Redeemable Preferred Stock Large accelerated filer Non - accelerated filer Emerging growth company Trading Symbol ( s ) AGNC AGNCN AGNCM AGNCO AGNCP 26-1701984 ( I.R.S. Employer Identification No. ) Securities Registered Pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes ý No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes No ý Indicate by check mark whether the registrant ( 1 ) has filed all reports to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes x No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes x No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Smaller Reporting Company Name of Exchange on Which Registered The Nasdaq Global Select Market The Nasdaq Global Select Market The Nasdaq Global Select Market The Nasdaq Global Select Market The Nasdaq Global Select Market If an emerging growth company , indicate by check mark if registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . ý Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No x As of June 30 , 2020 , the aggregate market value of the Registrant's common stock held by non - affiliates of the Registrant was approximately $ 5.7 billion based upon the closing price of the Registrant's common stock of $ 12.90 per share as reported on The Nasdaq Global Select Market on that date . ( For this computation , the Registrant has excluded the market value of all shares of its common stock reported as beneficially owned by executive officers and directors of the Registrant and certain other stockholders ; such an exclusion shall not be deemed to constitute an admission that any such person is an " affiliate " of the Registrant . ) The number of shares of the issuer's common stock , $ 0.01 par value , outstanding as of January 31 , 2021 was 537,899,803 . DOCUMENTS INCORPORATED BY REFERENCE . The information required by Part III will be incorporated by reference from the Registrant's definitive proxy statement for the 2021 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission pursuant to Regulation 14A . Certain exhibits previously filed with the Securities and Exchange Commission are incorporated by reference into Part IV of this report .