I am a little bit skeptical about the U.S. stock market and most stock markets mainly because what is happening is that we for the first time in recorded history we have all major central banks around the world printing huge amounts of money. (...) So we are all living in an artificial ocean of liquidity which has been rising pretty dramatically for several years. I know its artificial and in my view it is a terrible mistake. But when this ocean dries up we are all going to suffer and suffer badly.
Related: SPDR S&P 500 ETF Trust (SPY)