I review the recent literature that applies search-and-matching theory to the study of over-the-counter financial markets. I formulate and solve a simple model to illustrate the typical assumptions and economic forces at play in existing work. I then offer thematic tours of the literature and,...

In a tractable model of over-the-counter markets where each investor can arbitrarily distribute her search capacity across other investors, the holdings of an asset are endogenously concentrated among a subgroup of investors. Investors who are more likely to hold the asset search among those...