We study the optimal (i.e. revenue maximizing) auction of multiple products. We make three major points. First, we extend the relationship between price discrimination and optimal auctions from the single-product case to the multiple-product case. A monopolist setting prices for multiple...

All option trades must occur on exchanges, which typically offer auctions that improve prices over existing quotes. Wholesalers, that purchase orders from brokers, initiating auctions must be willing to trade at the existing best quote or better. For S&P500 stocks, auctions are 23% of options...

We study the order exposure choice of various trader types in high-speed markets. Using message-level data to identify algorithmic (ATs) and non-algorithmic traders (NATs) we examine how technological differences affect order exposure. While both ATs and NATs hide orders, superior technology...

Using data on indicative quotes dealers provide to clients, we establish empirical relationships regarding quote competition in the corporate bond market. Market-wide higher quoting activity is associated with greater trading volume and lower trading costs. At the dealer level, quoting dealers...