After an initial private launch to only Apple employees, Pirq will be rolling out its app to the rest of the public in the Bay Area within the next 12 months.

FORBES: Apple Employees Get A New "Pirq"

At a time when initial public offerings and other investment-banking business is scarce, Wall Street is all too happy to assist in rolling out a steady stream of ever narrower ETFs, notes Reilly, who formerly headed up equity compliance for Goldman Sachs.

FORBES: How To Avoid ETF Pitfalls