AGNC Investment Corp. is a U.S. mortgage REIT that invests primarily in Agency residential mortgage-backed securities (Agency RMBS) financed with leverage, aiming to generate stockholder returns with a substantial yield component. Its portfolio is concentrated in mortgage pass-through securities and collateralized mortgage obligations whose principal and interest are guaranteed by Fannie Mae, Freddie Mac, or Ginnie Mae, which shifts the core risk profile away from credit and toward interest-rate, spread, and prepayment dynamics. The company funds positions mainly through repurchase agreements and actively uses hedging and TBA (to-be-announced) positions to manage interest-rate exposure and portfolio liquidity. AGNC is internally managed and operates to maintain REIT tax status, which drives a high distribution requirement and makes capital markets access and balance sheet management central to the business model.