Automatic payments are increasingly common. The psychologies of the prominent of number, defaults and inattention combine to create an unexpected side effect of automatic payments. We see that credit card holders set a default automatic payment to match their modal repayment behavior. For those...

The disposition effect is regarded as a property of an individual stock: If an investor has made a loss on a stock, he or she is less likely to sell it, whereas if an investor has made a gain on a stock, he or she is more likely to sell it. This means that the more stocks in a portfolio are in...

We explore the effects of round number preferences in credit card payments. Payments at round numbers are very common: 70% of manual non-full credit card payments are at round numbers. Using minimum payment amounts as a natural experiment for the lower bound on payments, we show stickiness in...