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...

Using data from multiple card issuers, we show that the most common penalty fee type incurred by credit card holders – late payment fees – declines sharply over the first few months of card life. This phenomenon is wholly due to some consumers adopting automatic payments after a late payment...

We provide the first tests to distinguish whether individual investors equally balance their overall portfolios (naïve portfolio diversification—NPD) or engage in naïve buying diversification (NBD)—equally balancing values in same-day purchases of multiple assets. We find NBD in purchases...

We provide the first tests to distinguish whether individual investors equally balance their overall portfolios (naïve portfolio diversification—NPD) or engage in naïve buying diversification (NBD)—equally balancing values in same-day purchases of multiple assets. We find NBD in purchases...

We provide the first tests to distinguish whether individual investors equally balance their overall portfolios (naïve portfolio diversification--NPD) or engage in naïve buying diversification (NBD)--equally balancing values in same-day purchases of multiple assets. We find NBD in purchases of...

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...