Clemens Koppensteiner

Mathematician turned quantitative researcher. His academic work was in geometric representation theory and algebraic geometry (Hochschild cohomology, D-modules, derived categories of sheaves), with publications including arXiv:1506.07370 and arXiv:1904.07918. After a 2015 Northwestern PhD and three postdocs through 2021 he appears on a proprietary trading firm's research team.

Notes10

• Quant employment verification: CONFIRMED. Clemens Koppensteiner works at Radix Trading LLC as a Quantitative Researcher. Radix Trading LLC is a Chicago-headquartered privately held proprietary trading firm (offices Chicago, New York, London, Amsterdam) whose own site describes it as 'a research firm, powered by technology and monetized through trading' - directly a quantitative/proprietary trading employer, not a firm merely named 'quant'. Identity is corroborated: the same person is the Northwestern mathematics PhD (advisor David Nadler, 2015), former IAS/Oxford mathematician, and the LinkedIn profile linkedin.com/in/c-koppensteiner lists title 'Quantitative Researcher at Radix Trading' with company Radix Trading LLC. NOTE: the role, title and dates rest on the LinkedIn index record (enrich); no separate primary-source confirmation of the Radix role was located in this run, so the role/date detail is index-sourced while the identity and employer classification are independently supported.Sep 2021
• Index-only claim: the LinkedIn profile record (via enrichment index) lists 'Researcher at Radix Trading LLC' start 9/2021, no end date; this is an index/aggregator claim, not independent primary-source confirmation, and should be treated as unconfirmed-by-primary-source rather than as current employment. Classified as a quantitative research role at a proprietary trading firm.Sep 2021
• Radix Trading LLC is a proprietary/quantitative trading firm: its site states 'Radix Trading is a research firm, powered by technology and monetized through trading' with operations in Chicago, New York, London and Amsterdam; a directory profile further describes it as a privately held proprietary trading firm headquartered in Chicago. This classification rests on the firm's own site and a directory, not on the name alone.
• Career arc shows a move from academic mathematics (PhD 2015, three postdocs at UBC, IAS and Oxford through 2021) into quantitative research at a proprietary trading firm from 9/2021, a common academic-to-quant transition. The timing is factual; no source states the motivation or recruiting mechanism, so none is inferred.Sep 2021
• EPSRC-supported postdoctoral researcher at the University of Oxford 2019-2021, listed on Balazs Szendroi's students/postdocs page; a UKRI Gateway to Research project record notes he departed the grant and was replaced by another postdoc.2021
• Member of the School of Mathematics at the Institute for Advanced Study (Princeton) 9/2017-7/2019, field of study Geometric Representation Theory, advised on derived categories of sheaves; the IAS directory lists his personal site as math.caramdir.at. NSF-funded.Jul 2019
• PhD in Mathematics from Northwestern University, 2015; the Mathematics Genealogy Project lists his doctoral advisor as David Erie Nadler, and the Northwestern mathematics department newsletter lists him among 2015 PhD graduates.2015
• Represented Austria at the International Mathematical Olympiad in 2003 (rank 231, 49.7%, 11 points) and also competed in 2002 (rank 378, 4 points), per the official IMO results database; both are competition results, not employment.Jul 2003
• Postdoctoral Research Fellow at the University of British Columbia 2015-2017, per the IAS appointment record.2017
• Researcher in geometric representation theory and algebraic geometry with peer-reviewed publications, including 'Hochschild cohomology of torus-equivariant D-modules' (arXiv:1506.07370, 2015) and 'The de Rham functor for logarithmic D-modules' / logarithmic Riemann-Hilbert correspondences (arXiv:1904.07918, 2019); also a 2012/2013 paper on quotient triangulated categories with Timothy Logvinenko.2015
• Completed a Diplom/Master's thesis level work at Technische Universitat Wien: 'Mathematical Foundations of Elliptic Curve Cryptography' (2009), held on the TU Wien institutional repository, for which he is the author Clemens Koppensteiner.2009
• Index-only claim: the LinkedIn work history lists a 'Software Engineer at Siemens' role; no dates or primary-source page were located in this run, so treat the Siemens role and its timing as unconfirmed.