The WisdomTree Emerging Markets High Dividend Fund (NYSEARCA:DEM) offers income investors about 4% dividend yield sourced entirely from companies in developing economies, packaged in a single fund with $3.5 billion in net assets. For investors tired of domestic dividend stalwarts, the appeal is real. But the income mechanics here deserve a close look before treating ... DEM’s 500 holdings mask the real problem lurking in emerging market income