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Financial Technology Adoption: Network Externalities of Cashless Payments in Mexico

American Economic Review 2024 114(11), 3469-3512
Do coordination failures constrain financial technology adoption? Exploiting the Mexican government’s rollout of 1 million debit cards to poor households from 2009 to 2012, I examine responses on both sides of the market and find important spillovers and distributional impacts. On the supply side, small retail firms adopted point-of-sale terminals to accept card payments. On the demand side, this led to a 21 percent increase in other consumers’ card adoption. The supply-side technology adoption response had positive effects on both richer consumers and small retail firms: richer consumers shifted 13 percent of their supermarket consumption to small retailers, whose sales and profits increased

The End of Economic Growth? Unintended Consequences of a Declining Population

American Economic Review 2022 112(11), 3489-3527
Global digital transformation contributes to the realization of national interests, the improvement of financial management, and the development of financial technologies in the corporate sector of the economy. In the current extremely difficult conditions of a full-scale war, as part of the renewal of the strategy of the financial sector, the Ministry of Finance of Ukraine, the National Bank of Ukraine, together with IMF experts, are gradually developing the principles of assessing the quality of assets and conducting stress tests for business entities and financial institutions

Long-Run Growth of Financial Data Technology

American Economic Review 2020 110(8), 2485-2523 open access
“Big data” financial technology raises concerns about market inefficiency. A common concern is that the technology might induce traders to extract others’ information, rather than to produce information themselves. We allow agents to choose how much they learn about future asset values or about others’ demands, and we explore how improvements in data processing shape these information choices, trading strategies and market outcomes. Our main insight is that unbiased technological change can explain a market-wide shift in data collection and trading strategies. However, in the long run, as data processing technology becomes increasingly advanced, both types of data continue to be processed. Two competing forces keep the data economy in balance: data resolve investment risk, but future data create risk. The efficiency results that follow from these competing forces upend two pieces of common wisdom: our results offer a new take on what makes prices informative and whether trades typically deemed liquidity-providing actually make markets more resilient