We study endogenous liquidity trading in a market with long-lived asymmetric information. We distinguish between public information, tractable information that can be acquired, and intractable information that cannot be acquired. Besides information asymmetry and noise, the adverse-selection spread depends on the diffusion of intractable information and on the interest rate. With endogenous liquidity trading, efficiency is lower than that implied by noise-trading models. Liquidity traders benefit from the information released through the insider's trades in spite of their monetary losses. We study factors that affect the insider's information acquisition decision, including the amount of intractable information, observability, and information acquisition costs. Copyright 2004, Oxford University Press.

We study the effect of trading consolidation by examining the response of liquidity and stock price to the exercise of deep in-the-money corporate warrants. This enables a relatively clean test of the value of trading consolidation. The exercise at the warrant expiration is fully anticipated and has no information content. An effect can come from the value of trading consolidation that improves liquidity. Indeed, we find that liquidity and stock prices both increase significantly at warrant expiration. Further, the price increase is positively related to the pre-exercise extent of fragmentation, to post-exercise improvement in stock liquidity, and to the proportional increase in the number of shares following the warrant exercise.

This paper examines the value effects of improvements in the trading mechanism. Selected stocks on the Tel Aviv Stock Exchange were transferred gradually from a daily call auction to a mechanism where the call auction was followed by iterated continuous trading sessions. This event was associated with a positive and permanent price appreciation. The cumulative average market-adjusted return over a period that started five days prior to the announcement and ended 30 days after the stocks started trading by the new method was approximately 5.5%. In addition, we find positive liquidity externalities (spillovers) across related stocks, and improvements in the value discovery process due to the improved trading method. Finally, there was a positive association between liquidity gains and price appreciation.

This paper studies the interaction between dealer markets and a relatively new form of exchange, passive crossing networks, where buyers and sellers trade directly with one another. We find that the crossing network is characterized by both positive (‘liquidity’) and negative (‘crowding’) externalities, and we analyze the effects of its introduction on the dealer market. Traders who use the dealer market as a ‘market of last resort’ can induce dealers to widen their spread and can lead to more efficient subsequent prices, but traders who only use the crossing network can provide a counterbalancing effect by reducing adverse selection and inventory holding costs.