The market is also being propped up by federal spending. The federal deficit will be $4 trillion by they end of the year, according to the CBO. This is 5 times more than the year before. With the first stimulus package, the possible next ones, and such a drastic increase in federal spending, it seems the economy is largely being fueled by increasing the national debt. At some point, the can gets too large to keep kicking down the road.