Multi-asset income ETFs are here to stay, writes Paul Britt, as Guggenheim's CVY crosses $1B in AUM. It's been around since 2006, but a new entrant, MDIV has pulled in $440M in less than a year. These income funds have no mandate in their search for yield and roam across dividends (DVY), high-yield (HYG), REITs (IYR, VNQ), and MLPs (AMJ) as necessary. One drawback is their somewhat high expense ratios - in the 60-80 bp range, compared, for example, to DVY at 40 bps. Other M-A ETFs: INKM, IYLD, GYLD, HGI.