This paper studies the impact of market consolidation or fragmentation on its performance, examining four alternative models of exchange: a consolidated clearing house, fragmented clearing houses, a monopoly dealer market, and an interdealer market. The effects of the market mechanism on the...

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...