For many years IO economists devoted attention to the size distributions' of firms in a given industry. Most studies showed that the size distribution of firms in oligopolistic markets is highly skewed. There are many small firms and a few large firms. There is also a consensus that relative...

This paper explains why payment card companies charge consumers and merchants fees which are proportional to the transaction values instead of charging a fixed per-transaction fee. Our theory shows that, even in the absence of any cost considerations, card companies earn much higher profit when...

This paper investigates the market consequences of alliance formation among stock exchanges. These alliances enable brokers to match investors internationally at their local market, thereby eliminating the need for brokers to maintain memberships in foreign stock exchanges. We sort out the...

Recent legislation and court settlements in the United States allow merchants to use price discounts to steer customers to pay with means of payment that are less costly to merchants. We use transaction data to compute rough estimates of the expected net cost reduction by merchant type of giving...

Deposit insurance schemes in many countries place a limit on the coverage of deposits in each bank. However, no limits are placed on the number of accounts held with different banks. Therefore, under limited deposit insurance, some consumers open accounts with different banks to achieve higher...

Exclusion of borrowers from credit markets became a primary concern for regulators during the recovery from the recent recession. The paper analyzes loan-making institutions that set both interest rates and minimum credit requirements. We propose analytical measures of the degree of borrower...

This paper seeks to discover whether U.S. merchants are using their recently granted freedom to offer price discounts and other incentives to steer customers to pay with methods that are less costly to merchants. Using evidence of merchant steering based on the 2012 Diary of Consumer Payment...

What services do bank depositors seek? Oz Shy and Rune Stenbacka argue that they often seek money storage and payment services, but they get much more than they bargain for.