Mobile wallets replicate physical wallets on a mobile device, in which users can store different payment instruments to make mobile payments. As the mobile wallet is adopted, a mobile payment system emerges. I study the mobile payment system of Movii-the first fintech firm in Colombia operating...

Anomaly-detection methods are aimed at identifying observations that deviate manifestly from what is expected. Such methods are usually run on low-dimensional data, such as time series data. However, the increasing importance of high-dimensional payments and exposure data for financial oversight...

Purpose: From a financial stability viewpoint, this paper aims to study cyclical interdependencies arising from the cross-holding of securities in the Colombian financial system. Design/methodology/approach: Cross-holding of securities in financial systems occurs when two financial institutions...