In this EM Lens & Look-Through edition, Alessio de Longis, Senior Portfolio Manager and Head of Global Tactical Asset Allocation for Invesco, joins Damian Sassower of Bloomberg Intelligence to discuss the smart-beta revolution, as factor-based investment expands from equities to fixed income and foreign exchange. De Longis shares his views on factor-based investment performance across different beta regimes, and highlights the growing importance of emerging market risk premia. The two focus on the importance of active management, portfolio diversification, market liquidity and tail risk when taking a factor-based approach to investment.