Shorting volatility has gotten so crowded that it's not going to end well when everyone starts to sell.

At first only two stocks will trade on the new Sigma X-Squared platform.

The brokerage is rolling out a commission-based retirement account on its advisory platform for investors who do not need ongoing, annual management.

Gains could fall to 5.3 percent from 9.3 percent "unless portfolios are repositioned for the environment we think that we are entering."

Theories as to whey assets are unmoved.

Growth, not value stocks are leading the rally.

The decline in volatility is “encouraging people to take a lot more risk than they should, and understandably so,” El-Erian said.

Investors aren’t that enthused, according to some metrics.

Traders are already mostly on board with the central bank raising rates at its June meeting, pricing in odds of a hike at almost 80 percent.