A crucial question for security markets concerns the impact on liquidity of public display of investors’ latent demands. This topic is central to on-going debates about floor versus automated trading systems, the informational advantages of market makers, and inter-market competition between...

We examine the introduction of the Actual Size Rule (ASR) on Nasdaq during a control period and a period of market stress. We find that market makers in both ASR and Non-ASR stocks reduce quotation sizes and widen spreads when under stress but the reduction of quotation size and increase in...