Nordine Abidi, Leonardo Gambacorta, Christoffer Kok, Leonardo Madio, Ixart Miquel-Flores, and Alberto Partida, “Disciplining digital risk: evidence from cyber stress tests”
Bank for International Settlements, Working Papers n° 1351

Mag 29 2026
Nordine Abidi, Leonardo Gambacorta, Christoffer Kok, Leonardo Madio, Ixart Miquel-Flores, and Alberto Partida, “Disciplining digital risk: evidence from cyber stress tests”Bank for International Settlements, Working Papers n° 1351

Abstract: Investment in cybersecurity in an interconnected banking system has public-good proper-ties: positive externalities can generate systemic underinvestment. Using confidential supervi-sory data from the European Central Bank, we first identify “laggard” European banks that underinvest relative to their cyber-risk profiles, and then examine how supervisory scrutiny affects their incentives to invest. We exploit the 2024 ECB Cyber Resilience Stress Test (CyRST) as a quasi-natural experiment. In a difference-in-differences design, we find that following the CyRST announcement, laggard banks increased cybersecurity investment by about 80% relative to their peers. The response is stronger among laggards subject to high-intensity supervisory oversight, consistent with scrutiny exerting a disciplining effect. Overall, the results suggest that targeted supervisory scrutiny may help mitigate underinvestment incentives and strengthen banks’ operational risk management.

https://www.bis.org/publ/work1351.htm

Yevheniia Bondarenko, Nayeon Kang, Vivien Lewis, Matthias Rottner, and Yves S. Schüler “Geopolitical Risk in the Euro Area: Measurement and Transmission”
Deutsche Bundesbank, Working Paper n° 5/2026

Mag 29 2026
Yevheniia Bondarenko, Nayeon Kang, Vivien Lewis, Matthias Rottner, and Yves S. Schüler “Geopolitical Risk in the Euro Area: Measurement and Transmission” Deutsche Bundesbank, Working Paper n° 5/2026

Abstract: Geopolitical risk is a major concern for the euro area, yet widely used measures largely reflect a US perspective. We introduce a geopolitical risk indicator tailored to the euro area using local European news sources. Shocks to this index have significant recessionary and inflationary consequences in the euro area, effects that would be missed when relying on the corresponding US-based measure. We estimate that the Russo Ukrainian War imposed substantial output losses and inflationary pressures on the euro area in 2022. Combining structural scenario analysis with end-of-sample now casting, we show that euro area prospects are highly sensitive to future developments in geopolitical risk. We complement these analyses with two news-based measures of sanctions intensity and shortages for the euro area.

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=6764858

Cara Bordier, Lukas Frei, and Simon Stalder “Dollar Dominance: A Source of Dollar Volatility?”
Swiss National Bank, Working Paper n° 5/2026

Mag 29 2026
Cara Bordier, Lukas Frei, and Simon Stalder “Dollar Dominance: A Source of Dollar Volatility?” Swiss National Bank, Working Paper n° 5/2026

Abstract: The US dollar (USD) is involved in 88% of global foreign exchange transactions, partly due to its role as a vehicle currency. Using high-frequency data from primary interdealer platforms, we develop a novel methodology to identify USD cross-trades. We show both theoretically and empirically that such trades can generate price fluctuations in USD exchange rates. Employing an instrumental variables approach, we find that increased cross-trading activity amplifies aggregate USD volatility. These results highlight a fundamental trade-off: while dollar dominance enhances market liquidity, it also increases the currency’s exposure to shocks originating in other currency pairs.

https://www.snb.ch/en/publications/research/working-papers/2026/working_paper_2026_05

Matthew Read “Shock-percentile Restrictions for SVARs”
Reserve Bank of Australia, Working Paper n° 2026-01

Mag 29 2026
Matthew Read “Shock-percentile Restrictions for SVARs”Reserve Bank of Australia, Working Paper n° 2026-01

Abstract: I propose identifying structural vector autoregressions using ‘shock-percentile’ restrictions. These restrictions require the realisation of a structural shock in a selected episode to lie in the tail of the shock’s historical distribution, representing the belief that a relatively large shock has occurred. I argue that shock-percentile restrictions are an attractive alternative to imposing numeric bounds on shock magnitudes, which are difficult to credibly elicit. Simulations demonstrate the potential for shock-percentile restrictions to provide identifying information. In two empirical applications, I exploit shock-percentile restrictions to disentangle the relationship between uncertainty and real activity, and to sharpen identification of the macroeconomic effects of US monetary policy.

https://www.rba.gov.au/publications/rdp/2026/2026-01/full.html

Christian Friedrich and Laura Zhao “Patterns and Determinants of Global Cryptocurrency Flows”
Bank of Canada, Working paper 2026-15

Mag 29 2026
Christian Friedrich and Laura Zhao “Patterns and Determinants of Global Cryptocurrency Flows”Bank of Canada, Working paper 2026-15

Abstract: In this paper, we examine the patterns and determinants of cross-border cryptocurrency flows. While our analysis focuses primarily on Bitcoin flows, the cryptocurrency with the largest market capitalization, we show that our key results also extend to four major stablecoins. After documenting global patterns of cross-border Bitcoin flows and contrasting them with those of traditional capital flows, we employ a cross-country panel approach to identify the key drivers of cross-border crypto flows for up to 162 countries. Our results provide evidence for the presence of multiple coexisting motives. The most significant motives comprise strategies to adjust to unfavorable macro and financial developments, as well as the need to conduct international payment and remittance transfers. Moreover, by conducting a case study of cross-border Bitcoin flows after the COVID-19 shock, we find that these motives were particularly relevant at a time when economic conditions were weak and the need for remittances appeared high. Gaining a better understanding of the motives behind cross-border cryptocurrency transactions is crucial for informing the public debate on cryptocurrencies and their potential use cases.

https://www.bankofcanada.ca/2026/05/staff-working-paper-2026-15

Mattia Bevilacqua, Jon Danielsson, Lerby Ergun, Andreas Uthemann, and Jean-Pierre Zigrand “Central Bank Crisis Interventions and the Term Structure of Market Fear”
Bank of Canada, Working paper 2026-17

Mag 29 2026
Mattia Bevilacqua, Jon Danielsson, Lerby Ergun, Andreas Uthemann, and Jean-Pierre Zigrand “Central Bank Crisis Interventions and the Term Structure of Market Fear”Bank of Canada, Working paper 2026-17

Abstract: We study the impact of Fed crisis interventions on market fears — the perceived risk of large asset price drops. To do so, we develop a methodological framework that allows us to evaluate the causal effect of unexpected Fed actions on changes in market fears. We extract daily fear term structures from options markets with event horizons ranging from two weeks to ten years. We then use high-frequency price movements around crisis announcements for a wide range of financial assets, including FX, equity, and fixed income markets, to isolate the shock component of Fed interventions. We can measure the heterogeneous effects of various crisis tools by classifying Fed announcement shocks into five different policy groups. Applying this to the market turmoil of 2020, we find that the Fed impacts market fear via risk and information effects. The risk channel dominates at short to medium terms and works via asset purchases, whereas the information channel dominates at longer terms and operates via interest rate policies.

https://www.bankofcanada.ca/2026/05/staff-working-paper-2026-17

Brooke E. Hathhorn, Laura E. Jackson, and Michael T. Owyang “Does Uncertainty Really Predict Recessions?”
FEDERAL RESERVE BANK OF ST. LOUIS, Working Paper n° 2026-010A

Mag 29 2026
Brooke E. Hathhorn, Laura E. Jackson, and Michael T. Owyang “Does Uncertainty Really Predict Recessions?” FEDERAL RESERVE BANK OF ST. LOUIS, Working Paper n° 2026-010A

Abstract: We evaluate the ability of economic uncertainty measures to forecast recessions in real time. We find that including uncertainty increases the predictive power of both in sample and out-of-sample forecast models relative to a baseline set of financial variables. A nonlinear maximum transformation of uncertainty, which captures whether a measure exceeds its maximum over the past year, improves forecast performance for some measures. Adding a contemporaneous indicator like GDP growth alongside uncertainty yields additional predictive gains. Lastly, ex post Bayesian model averaging outperforms individual uncertainty models and ex ante factors of uncertainty generated using principal component analysis.

https://fedinprint.org/item/fedlwp/103289/original

Celso Brunetti and Christoph Frei “Bank Regulation and the Rise of Nonbank Intermediation”
Federal Reserve Board (Board of Governors), Working Paper n° 2026-030

Mag 29 2026
Celso Brunetti and Christoph Frei “Bank Regulation and the Rise of Nonbank Intermediation” Federal Reserve Board (Board of Governors), Working Paper n° 2026-030

Abstract: We study the rise of nonbank financial intermediation and its implications for systemic risk. We develop a structural network model of banks and nonbank financial institutions (NBFIs) that decomposes intermediation into a capacity channel, driven by bank balance-sheet constraints, and a reliance channel, reflecting NBFI funding reliance. Using U.S. banking confidential supervisory data, we estimate key structural parameters and quantify both channels. We find that fluctuations in bank-NBFI intermediation are primarily explained by the reliance channel, with variation in NBFI fragility emerging as the dominant driver. We show that NBFI intermediation can amplify shocks through funding interconnectedness.

https://www.federalreserve.gov/econres/feds/bank-regulation-and-the-rise-of-nonbank-intermediation.htm

Alessandro Calvia, Marzia De Donno, Chiara Guardasoni, Simona Sanfelici “Short-rate models with stochastic discontinuities: A PDE approach”

Mag 21 2026
Alessandro Calvia, Marzia De Donno, Chiara Guardasoni, Simona Sanfelici “Short-rate models with stochastic discontinuities: A PDE approach”

Abstract: With the reform of interest rate benchmarks, interbank offered rates (IBORs) like LIBOR have been replaced by risk-free rates (RFRs), such as the Secured Overnight Financing Rate (SOFR) in the U.S. and the Euro Short-Term Rate (€STR) in Europe. These rates exhibit characteristics like jumps and spikes which correspond to specific market events, driven by regulatory and liquidity constraints. To capture these characteristics, this paper considers a general short-rate model that incorporates discontinuities at fixed times with random sizes. Within this framework, we introduce a PDE-based approach for pricing interest rate derivatives and establish, under suitable assumptions, a Feynman-Kač representation for the solution. For affine models, we derive (quasi) closed-form solutions, while for the general case, we develop numerical methods to solve the resulting PDEs.

https://doi.org/10.1016/j.matcom.2026.04.034

Roberto Baviera and Michele Domenico Massaria, “The additive Bachelier model with an application to the oil option market in the Covid period”

Apr 30 2026

Abstract: In April 2020, the Chicago Mercantile Exchange temporarily switched the pricing formula for West Texas Intermediate oil market options from the Black model to the Bachelier model. In this context, we introduce an additive Bachelier model that provides a simple closed-form solution and a good description of the implied volatility surface. This new additive model exhibits several notable mathematical and financial properties. It ensures the no-arbitrage condition, a critical requirement in highly volatile markets, while also enabling a parsimonious synthesis of the volatility surface. The model features only three parameters, each with a clear financial interpretation: the volatility term structure, the vol-of-vol, and a parameter for modelling skew. Model calibration can follow a cascade procedure: first, it accurately replicates the term structures of forwards and At-The-Money volatilities observed in the market; second, it fits the smile of the volatility surface. The proposed model also supports efficient pricing of path-dependent exotic options via Monte Carlo simulation, using a straightforward and computationally efficient approach. Overall, this model provides a robust and parsimonious description of the oil option market during the exceptionally volatile first period of the Covid-19 pandemic.

https://doi.org/10.1016/j.cam.2026.117741