We model intermediaries trading economically coupled assets, each asset in its own over-the-counter market--e.g., secured debt and the underlying collateral. Incentives to provide liquidity in one market are increasing in counterparties' activity in both markets. The intermediaries' activity is...

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,...