Abstract: Using transaction-level data from a Nordic social-trading platform, we examine whether and how financial finfluencers (“finfluencers”) causally affect retail investors. Identification exploits a mechanical platform rule under which some platform employees are automatically added to the follow lists of investors active during their tenure. We find that following a finfluencer increases portfolio and purchase overlap, with weaker effects on sales. Influence is stronger for popular, central, and high-performing finfluencers and for investors who follow fewer others. Transmission is concentrated in index funds/ETFs and local securities. These findings identify finfluencers as important drivers of retail trading and portfolio choice.
Conferences: AFA 2026, FIRS 2025, AFA AFFECT Workshop 2025, MFA 2025, ABFER 2025, 10th Northeastern University Finance Conference, 7th Future of Financial Information Conference, CICF 2024
Abstract: Buyers and suppliers have diverging interests about trade-credit maturities: buyers desire long payment periods as a source of cheap funding, while suppliers prefer swift payments to avoid locking up scarce liquidity in idle assets. A fast-growing financial product innovation---supply-chain finance (SCF)---offers to resolve these diverging interests, but its net effect on suppliers is a priori unclear. We study the effects of SCF programs on suppliers using unique invoice-level data from a large Swedish bank. We find that SCF programs relax suppliers’ liquidity constraints and thereby enable them to grow their sales, employment, and investments.
Conferences: INFORMS 2024 (invited session), Banque de France Empirical Corporate Finance Workshop 2024, CICF 2023, FMA 2023
Abstract: We study whether contract form can be a binding determinant of credit market participation. Exploiting two institutional shocks in Denmark that altered the availability of a Sharia-compliant mortgage product, and using population-wide administrative registers with a difference-in-differences design, we estimate that product introduction raised the probability of a Muslim immigrant becoming a new mortgage borrower by 0.40 percentage points (25.6\%) while subsequent removal reduced take-up by 0.10 percentage points. Access to the religion-compatible mortgage also increased upward residential mobility and raised deposits, total assets, financial assets, and net wealth. Our results identify a demand-side friction in household finance: even when credit supply and underwriting standards are unchanged, participation may remain limited because available contracts do not align with borrowers' normative constraints. These findings imply that regulatory treatment of contract form can materially affect financial inclusion and that culturally compatible products may broaden access to credit without relaxing prudential standards.
Conferences: Boulder Summer Conference 2026
Abstract: We study how cross-selling of banks affects household credit using administrative register data on bank–household relationships in Denmark. Our identification strategy exploits plausibly exogenous changes in cross-selling resulting from bank mergers, comparing acquiring-bank borrowers who have pre-merger relationships with the target bank to those who do not. Borrowers whose cross-selling relationships strengthen receive loans that are 22% larger and face interest rates about 60 basis points lower after the merger. The effect is stronger in less-competitive local banking markets. Cross-selling also enables treated borrowers to reallocate balances from deposits toward securities following the merger. Overall, our findings suggest that cross-selling has an economically significant effect on household credit.
Conferences: 28th Annual Meeting of the Swiss Society for Financial Market Research 2026
Conferences: CEPR-ESSEC-Luxembourg conference on Sustainable Financial Intermediation 2025, World Finance Conference 2025
Summary: Within bank-firm relationships, profit from non-loan products cross-subsidizes loans and increases both credit supply and lenience in delinquency.
Conferences: AFA 2021, CICF 2021, EFA 2020, European Central Bank Young Economists’ Competition 2020
Awards: Peter Högfeldt Award for Outstanding PhD Thesis 2022, ECB Young Economists' Competition Finalist 2020, Handelsbanken Doctoral Award 2019, EFA Doctoral Tutorial Best Paper Prize 2019
Summary: Misconduct (mis-selling and hidden fees etc.) in traditional banking sector drives borrowers to online lenders.
Conferences: EFA 2018, CEPR Third European Workshop on Household Finance, 4th IWH-FIN-FIRE Workshop in Halle
2022 Evaluation: mean = 4.9/5, N = 130 (Bachelor Program in International Business and Politics)
2023 Evaluation: mean = 4.7/5, N = 70 (Bachelor Program in Service and Management)
2024 Evaluation: mean = 4.7/5, N = 124 (Bachelor Program in Service and Management)
2025 Evaluation: mean = 4.7/5, N = 120 (Bachelor Program in Service and Management)
Bank Lending and Firm Internal Capital Markets following a Deglobalization Shock by Imbierowicz, Nagengast, Prieto and Vogel 2023 Slides
Are (Nonprofit) Banks Special? The Economic Effects of Banking With Credit Unions by Shahidinejad 2023 Slides
How do common owners coordinate—is it the proxy advice industry? by Forsbacka, 2023 Slides
Managing Regulatory Pressure: Bank Regulation and its Impact on Corporate Bond Intermediation by Rapp and Waibel, 2023 Slides
Is Flood Risk Priced in Bank Returns? by Schubert 2022 Slides
Democratization, Leader Education and Growth: Firm-level Evidence from Indonesia by Pelzl and Poelhekke 2022 Slides
“There is No Planet B”, but for Banks “There are Countries B to Z”: Domestic Climate Policy and Cross-Border Bank Lending by Banincasa, Kabas and Ongena 2022 Slides
Bank Compensation for Penalty-Free Loan Prepayment: Theory and Tests by Eckbo, Su and Thorburn 2021 Slides
Creative Destruction? How do Firms Recover From Idiosyncratic Shocks? by Bustos, Engist, Martinsson and Thomann 2021 Slides