Jan Holstermann

Jan Holstermann is a mathematics graduate of the University of Bonn (BSc 2018-2021, MSc 2021-2023) and a Senior Consultant at d-fine, a quantitative and regulatory consulting firm, in Duesseldorf. He represented Germany at the International Mathematical Olympiad 2018 in Cluj-Napoca, earning an Honourable Mention, and won the 2020/21 Bachelor Prize of the Bonner Mathematische Gesellschaft for his thesis 'Brunn-Minkowski Inequality with Gaussian Measure'. A LinkedIn-index employment record lists a 2023 Quantitative Trading Internship at Jane Street in London, which is not independently confirmed by a primary source.

Notes3

• Quant employment verification: UNRESOLVED. The only lead in quantitative finance is a 2023 'Quantitative Trading Intern' role at Jane Street in London, which appears solely in the LinkedIn-index enrichment record and is not confirmed by any independently read primary source (no personal page, resume, or announcement). Jane Street is unambiguously a quantitative trading / market-making firm, so the employer classification qualifies as quantitative finance; the gap is employment evidence, not employer classification. Education, Olympiad and d-fine details are corroborated across independent pages, giving a reasonable identity match, but index-only employment is retained as explicitly uncertain. No other quant-finance employer (bank, asset manager, hedge fund, energy or crypto trading firm) is documented. Deloitte (Actuarial & Insurance Services, 2022), Fraunhofer FKIE (research) and d-fine (consulting) are not trading desks.2023
• Represented Germany at the International Mathematical Olympiad 2018 (Cluj-Napoca, Romania) and earned an Honourable Mention with 10 points, ranked 368th overall.2018
• Awarded the 2020/21 Bachelor Prize of the Bonner Mathematische Gesellschaft for his bachelor thesis 'Brunn-Minkowski Inequality with Gaussian Measure'.2021
• Studied mathematics at the University of Bonn from 2018 (BSc) through the MSc in 2023, i.e. entered university the same year as the 2018 IMO.2023
• Career at d-fine (Consultant 2023-2025, Senior Consultant 2025-present) sits within a firm whose banking and capital-markets practice covers quantitative and regulatory consulting; it is not itself a trading desk.2025