By exploiting the uneven consolidation in the retail sector over the past few years we find that Chinese and other LDC imports are disproportionately sold by the largest retail firms. Smaller retailers sell almost as many imports but they are more likely to import from high-cost source...

We analyze the effect of Wal-Mart's entry into the grocery market using a unique store-level price panel data set. We use OLS and two IV specifications to estimate the effect of Wal-Mart's entry on competitors' prices of 24 grocery items across several categories. Wal-Mart's price advantage over...