Fidelity Fundamental Emerging Markets ETF (NYSEARCA:FFEM) has delivered a strong 34% gain over the past year, attracting investors who want active, fundamentals-driven exposure to high-growth economies across Asia, Latin America, Eastern Europe, and Africa. The fund targets companies in markets growing faster than the developed world, selected by Fidelity's analysts on business quality and valuation rather than passive index weights. But that mandate carries a specific and pressing risk right now that inves ...