If you like ultra-high-yield stocks, then AGNC Investment (AGNC 0.20%) and its over 14% dividend yield will probably be on your radar screen. However, when yields get this high you need to step back and make sure you really understand the story behind the company before you buy it. AGNC's story isn't all bad, but it probably isn't the right tale for investors trying to live off of their dividends. Here's what you need to know. AGNC is not your typical REIT Real estate is in the name real estate investment t ...