Effects of the International Regulatory Reforms over Market Liquidity of Mexican Sovereign Debt
with José Luis Lara, Fabrizio López-Gallo, and Alberto Romero
Journal of Financial Stability
October 2020
Abstract: In this paper we document empirical evidence regarding the unintended consequences of financial regulatory changes on market liquidity of Mexican sovereign debt. We find mixed impacts: in the context of Basel 2.5, Basel III and the Liquidity Coverage Ratio, we find negative effects, while in the case of the Dodd-Frank Act and the Volcker Rule we find positive effects. The difference in results can be explained by the fact that some of the regulatory changes mainly imposed additional constraints on government debt holdings, while others were designed to enhance transparency and thus reduce uncertainty as well as information asymmetries. Moreover, our estimates suggest that the aggregate effect of the regulatory changes decreased the weekly turnover ratio of Mexican sovereign debt securities by 18 percent. Our results hold under different liquidity measures and different econometric specifications.
[Paper]
Geopolitical Pressures and the Economic Costs of Sovereign Default: Evidence from Mexico
Job Market Paper
November 2025
Abstract: This paper examines how geopolitical pressures shape sovereign default risk and asset prices, exploiting Donald Trump’s rhetoric and actions toward Mexico as a natural experiment. I provide causal evidence that these geopolitical shocks produced sizable and persistent increases in Mexico’s perceived default probability. A textual analysis of President Trump’s social-media posts shows that trade-related threats—rather than migration-related comments—were the main drivers of this rise in sovereign risk. A one-basis-point Trump-induced increase in default risk led to a 5.3-cent nominal depreciation of the peso and a 0.11 percent decline in Mexican stock returns, with the tradable and services sectors most affected. At the macro level, the heightened risk perception reduced aggregate consumption by roughly 0.32 percent during 2017–2018, and filtering estimates imply that consumption falls by 0.02 percent within two weeks of a one-basis-point rise in default risk.
Presentations: Midwest Macroeconomics Conference at Texas Tech (2023), UMN-UWM Workshop (2024), JIE Summer School at Oxford (2024)
Awards: Juli Plant Grainger Institute Summer Fellowship (2023)
[Draft - coming soon!] [Slides - coming soon!] [Podcast - coming soon!]
FX Interventions in a Small Open Economy: The Case of Domestic Non-Deliverable Forwards
with Yeonggyu Yun
July 2025
Abstract: We study the effects of domestic non-deliverable forwards (DNDF) on the level and volatility of the USD/MXN nominal exchange rate. We focus on the introduction of this policy tool by the Central Bank of Mexico in 2017 and find that the announcements of this policy were successful in mitigating both depreciation pressures and volatility of the Mexican peso. We estimate an appreciation of the peso of approximately 33 cents after the first announcement of the policy and a reduction in the option-implied exchange rate volatilities for different maturities of 40 cents on average. We also document that the effect on option-implied volatilities is larger the shorter the maturity of the exchange rate options. Contrary to the announcement effect, we do not find an impact associated with the implementation of this instrument. We rationalize our findings using a model of a small open economy with collateral constraints and show that this policy tool can be used to prevent a self-fulfilling currency crisis or to mitigate the severity of the contraction should the crisis materialize.
Presentations: UMN-UWM Workshop (2024), Midwest Economics Association (2025), Midwest Macroeconomics Conference at Kansas City Fed (2025), 20th Annual Economics Graduate Student Conference in St. Louis (2025), 6th Biennial Conference in Financial Stability at Banco de México (2025)
Awards: Juli Plant Grainger Institute Summer Fellowship (2024)
Abstract: This paper uses firm-level data to test the so-called markup channel of uncertainty shocks. To that end, we measure markups based on a production function approach using quarterly data from US Compustat. We identify uncertainty shocks from macroeconomic data using a Bayesian VAR with Stochastic Volatility. Contrary to the predictions of DSGE models with nominal price rigidities, we find that markups are procyclical to uncertainty disturbances. Specifically, a one-standard-deviation shock to uncertainty decreases markups by approximately 0.30 percentage points. The effect is long-lived, lasting up to three years for most uncertainty measures. We find that the conditional procyclicality of uncertainty is robust to several sensitivity checks. Our results are consistent with previous findings in the literature that rely on aggregate measures of markups and alternative identification strategies of shocks to uncertainty.
Presentations: ITAM Alumni Conference (2024), Midwest Macroeconomics Conference at Kansas City Fed (2025)
[Draft - coming soon!][Slides]
Abstract: Financial uncertainty generates pernicious effects over economic activity such as investment delay and capital outflows (i.e., flight-to-quality effect), thus it is important to measure it and to design strategies that might mitigate it. Based on recent work, we construct a daily financial uncertainty measure for the Mexican financial markets. Our two-step approach consists of extracting a common factor from 5 financial time series that account for global, currency, sovereign, equity, and corporate risk, afterwards we use an EGARCH model, which accounts for the asymmetric response to news of the financial variables, to extract the conditional variance of the residuals and average them to obtain our measure of financial uncertainty. The uncertainty measure captures relevant local and global events related to elections, crises, and major government decisions. We assess the impact of financial uncertainty on economic activity, the correlation between our measure and other indicators of uncertainty, the relationship between financial conditions and financial uncertainty, and the effect of uncertainty on holdings of government debt by foreign lenders.
[Draft]
Abstract: We produce a measure of the pre-COVID economic effect of the 2018 presidential election outcome in Mexico and the subsequent economic changes that the economy experienced. We use the Synthetic Control methodology to estimate a counterfactual for Mexico's GDP per capita in 2010 United States dollars. The result indicates a reduction of $332.00 US dollars by the fourth quarter of 2019. A placebo test indicates that the result is statistically significant at a level of 7.14%. The comparison between counterfactual and observed income shows that GDP had a positive trend until the second quarter of 2018. Starting in the third quarter of 2018, the Mexican economy fell below that trend and displayed a different path with a negative slope. Our results are robust to alternative specifications. Additionally, we show that, at least for the previous presidential term that started in 2012, there was no first-year-of-government effect that was discussed by economists in the media to explain the contraction in 2019. We also find that there was no immediate negative impact on the Mexican economy of the election of Donald J. Trump as president of the United States in 2016, considering that he had an anti-NAFTA rethoric in campaign.
[Draft]
Abstract: Mexico grew -0.1% in 2019. That rate is well below the average between 1980 and 2018, which is 2.4%. Our hypothesis is that the Mexican economy suffered a pre-COVID fall in its trend growth. To validate the hypothesis we proceed as follows: i) analyze the dynamics of some macroeconomic variables in the first year of the current (2018-2024) and the three previous presidential terms; ii) measure the change in the trend in economic activity and estimate the probability of the economy being in a low growth regime (in a statistical sense) using a three-state Markov switching model; iii) estimate a multivariate regime Markov switching model with the growth of five variables. We summarize our findings into two main results: i) there is a common pattern in macro variables in the first year of a new administration. The main distinguishing feature of the current administration is the reversal of the trade balance in 2019; ii) Mexico moved towards a low growth regime at the end of 2018. We propose, without establishing causality, that the source of the fall in trend growth comes from large changes in economic policy in 2018 and 2019. These changes translated into a negative shock to trend growth. We list four alternative hypotheses. We propose a test for theories explaining the change in 2019: to explain simultaneously the fall in growth and the change of sign of the trade balance. Our theory could account for both facts.
[Draft]
An Application of Fisher's Permutation Test for Anticipating Changes in Sovereign Ratings using High-Frequency Data
with Jorge de la Vega, Cutberto Frias Sarraf, and Alberto Romero
July 2021
Abstract: Sovereign credit ratings significantly influence economic decisions and activity, making their monitoring crucial. We propose an application of Fisher’s (1936) permutation test to assess the likelihood of Mexico belonging to specific credit rating categories at different time periods. By analyzing the dynamics of 5-year credit default swaps across 68 advanced and emerging market economies, we find evidence suggesting that Mexico’s CDS exhibits a dynamic similar to those associated with speculative grade ratings. To enhance the robustness of our findings, we conducted tests using credit ratings from other reputable agencies like Fitch and Moody’s. The results consistently indicate that Mexico’s CDS has exhibited a dynamic comparable to those economies with speculative grade ratings.
Domestic vs. Foreign Law: Portfolio Dynamics of Sovereign Debt
by Lucas Belmudes and Angelo Mendes
6th Biennial Conference on Financial Stability at Banco de México
November 2025
[Slides]