Elementary economic forces — too much supply and not enough demand — have collided to create the worst stretch for U.S. government bonds since the Civil War. The government keeps borrowing to cover its budget deficits, while once-reliable buyers of that debt, both at home and abroad, have pulled back.
he result: Investors are demanding the steepest yields since 2007. Auctions of fresh bonds that were once routine are now going terribly. And bond portfolios are getting absolutely hammered. The longest-dated Treasury bonds are in a bear market worse than the dot-com bust and almost as bad as 2008.