StockTiming.com posted this plot of the Russell 2000 Index, an index of smaller company (small-cap) stocks. Nominally, the best it has ever been, too.
Funny thing, that. If you look at how the market has been behaving over the last 19 years, it has been displaying a discomforting pattern: higher highs, yes, but lower lows, too.
If you don't get what this 19 year chart of the DOW is saying, do a search on "expanding wedge technical analysis".The short version is that it indicates a snap back is brewing - see points labeled 1 and 2. When it snapped back before, it snapped viciously, and the expanding wedge indicates a correction now would be to the range of Dow 6000. The most dangerous time in a market is when everyone is saying it's good. The old saying is that the time to buy is when there's blood in the streets and everyone else is selling desperately; the time to sell is when everyone thinks it's sunshine, lollipops and rainbows forever.
Dow 6000 would put blood in the streets.