It's mostly just inflation. Money supply increased by a factor of what, 3 or 4? The stock market goes up almost 1/3 in one year? That seems about right. Will it keep going up? As long as they keep printing money, yeah it will keep going up, unless the fed loses control of the bond market, which they have.
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This year's "best" stock market was Venezuela's. It's up a little less than 500% due to massive inflation. Guys like Krugman think it's a stunning success.
This is exactly the problem, or part of it.
Greenspan's solution to the .com / market bubble crash of 2000-2001 was to lower rates.
That led to the housing boom and bust which, if not for massive federal debt driven bailouts, would have taken into another depression.
Bernanke's solution to the housing crash was QE.
If you read the following, the other shoe has yet to fall for QE. Inflation.
http://useconomy.about.com/od/glossary/g/Quantitative-Easing.htm
"However, it didn't achieve the Fed's goal of making more credit available.
It gave the money to banks, which basically sat on the funds instead of lending it out. Banks used the funds to triple their stock prices through dividends and stock buy-backs. The large banks also consolidated their holdings, so that the largest .2% of banks control more than 70% of bank assets. Since banks didn't lend out the money, inflation wasn't created in consumer goods. As a result, the Fed's measurement of inflation, the CPI, stayed within the Fed's target. (Source: WSJ, Confessions of a Quantitative Easer, November 12, 2013)"
"However, QE did create asset inflation, first in gold and other commodities, and then in stocks, as investors were forced out of bonds.
An ounce of gold more than doubled, rising from $869.75 to $1,895 between 2008 and 2011. After that, investors shifted to stocks. The Dow rose 24% in 2013 as corporations followed the banks' example and boosted stock prices with buybacks and dividends."