Merrill Edge also is supposed to help build loyalty with younger investors, who mightn't be ready for a financial adviser.

WSJ: FUND TRACK: Merrill Is Launching

But valuation concerns mightn't prove a deterrent as investors chase distributions and growth that have yielded far more than other investment options.

WSJ: Rise of Energy Master Limited Partnerships Has Some Concerned

Mightn't they want the work?

CNN: STORY HIGHLIGHTS