Bill Gross, a fund manager at Janus Henderson, says it's getting much harder to generate alpha and the Fed can't raise rates much further before it hurts the economy. Prior to that, Adam Posen, president of the Peterson Institute for International Economics, says there's an 85 percent chance that the GOP tax proposal will go through. Finally, Joachim Fels, a global economic advisor at PIMCO, says we're stuck in the new neutral and there's no escape from the savings glut.