AGNC Investment has been rising over the past year, but it seems to be bouncing off the $10 price level. Is a breakout on the way?Shares of AGNC Investment (AGNC) have risen nearly 40% over the past year. But when you add the mortgage real estate investment trust's (REIT's) huge 14.5% dividend yield to the mix, its total return (which assumes dividend reinvestment) was an even more impressive 60% or so.That's a huge total return and easily beats the 42% total return of the S&P 500 index. Is there more to co ...