Bubble? What bubble? It's hard to find one yet

Bubble-spotting has been the most popular sport on Wall Street these days.

Whether it's a stock market bubble, bond bubble or even a bitcoin bubble, investors are worried that things are getting frothy across multiple asset classes.

For once, CNBC.com's Patti Domm and Jeff Cox agree, with both thinking that there's a distance to go yet before a real bubble takes root.