We study performance and competition among high-frequency traders (HFTs). We construct measures of latency and find that differences in relative latency account for large differences in HFTs' trading performance. HFTs that improve their latency rank due to colocation upgrades see improved...

We construct the network of U.S. firms implied by social media. We identify connections between firms and use these to construct a network that we call The Social Internetwork. The Social Internetwork describes deep, non-obvious links between firms that subsume product-supplier, industry, or...

We solve a multi-period model of strategic trading with long-lived information in multiple assets with correlated innovations in fundamental values. Market makers in each asset can only condition their price functions on trading in the that asset (but not on trading in the other asset). Using...