While algorithmic trading now dominates financial markets, some exchanges continue to use human floor traders. On March 23, 2020 the NYSE suspended floor trading because of COVID-19. Using a difference-in-differences analysis, we find that floor traders are important contributors to market...

We study the impact of index investing on firm performance by examining the link between commodity indices and firms that use index commodities. Around 2004, there was a dramatic increase in commodity index investing, an event referred to as the financialization of commodity markets. Following...