1. One might ask whether the independence in market clearing across securities, and thus nonredundancy, are relevant with multiple trading rounds, possibly continuous trading. Conditioning on past outcomes allows information from past shocks to be (at least partially) incorporated into traders' demands-contingent or not. Our paper investigates how independence in market clearing affects the way current-round shocks impact behavior and outcomes. 42 completeness: With K securities (in addition to a riskless assets), any additional security in the span of K state variables can be priced linearly by the price processes of these K securities;Dynamic Trading In dynamic markets, traders can often condition their demands on past outcomes-from any exchange
2. Our analysis points to new effects to this discussion;Cramton Budish;There is renewed interest in understanding the impact of changes in trading technology on efficiency and competition among platforms,1989
3. if demands are contingent and traders are price-takers (I ? ?), the outcome will be efficient in every round. In a dynamic model with imperfectly competitive traders (I < ?), multiple rounds are needed to realize the gains from trade from a given round's shock. The effects of limited conditioning we identify will be present in all rounds;S;With the gains from trade renewed by shocks,2019
4. Trading and Information Diffusion in Over-the-Counter Markets;A Babus;Econometrica,2018
5. Strategic Fragmented Markets