Nyse jan22
Traders work on the floor of the New York Stock Exchange on Jan. 22, 2013 in New York City. - 

This final note today -- a little bit existential, I'll grant you, but somehow appropriate on a day when two of the three major stock indices closed at five-year highs.

There's another index we might want to pay heed to today. It's called the VIX, also known as the volatility index, or the fear index -- a measure of how worried Wall Street is about what's coming down the pike.

Not at all worried, it seems. The VIX is at five-year lows this week.

And I just wonder if maybe we don't want Wall Street to be just a little bit afraid.

Follow Kai Ryssdal at @kairyssdal