Dave Nadig

Dave Nadig is one of the most knowledgeable practitioners in the ETF industry. He previously served as CEO of ETF.com and head of research at FactSet before joining VettaFi as chief investment officer. Nadig is well known for his deep expertise in ETF mechanics — particularly the creation/redemption process, liquidity dynamics, and arbitrage mechanisms that keep ETF prices aligned with NAV. He has been educating institutional and retail investors on ETF structure through conference speaking, writing, and media for over two decades. His analysis of how ETF liquidity layers interact — the on-screen liquidity of the ETF shares themselves, the liquidity of the underlying securities portfolio, and the arbitrage capital available from authorized participants to bridge temporary price dislocations — has given investors a sophisticated framework for selecting ETFs in less liquid segments of fixed income and international equity markets where NAV tracking can diverge significantly during stress periods.