This paper finds that marketmaking practices of dual traders are pit-specific. In the S&P 500 futures pit, the authors estimate that, because of a lower price impact, customers of dual traders pay eighteen cents less per contract on their trades, compared with customers of pure brokers....

We investigate, both theoretically and empirically, the relation between the adverse selection and fixed costs of trading and the number of informed traders in a financial asset. As a proxy for informed traders, we use dual traders -- i.e., futures floor traders who execute trades both for their...

We study the effect of restrictions on dual trading in futures contracts. Previous studies have found that dual trading restrictions can have a positive, negative, or neutral effect on market liquidity. In this paper, we propose that trader heterogeneity may explain these conflicting results. We...

We investigate the relation between the number of informed traders in a financial asset and the estimated adverse selection cost of trading in that asset, lambda, after controlling for the effects of previously identified determinants of market liquidity. As a proxy for informed traders, we use...

Dual trading is the practice whereby futures floor traders execute trades both for their own and customers' accounts on the same day. We provide evidence, in the context of restrictions on dual trading, that aggregate liquidity measures, such as the average bid-ask spread, may be misleading...