Ambroise Marigot

Ambroise Marigot is a French quantitative finance professional, currently a systematic credit trader at Morgan Stanley (Head of European Automated Credit Trading per a conference bio). Educated in mathematics at the Ecole normale superieure and Universite Pierre et Marie Curie and agrege de mathematiques, he joined the Corps des Mines in 2015. His career spans quantitative research and data science roles (ENS, Secure-IC, AXA, regulatory modelling), a Jane Street Trading Internship (2017) and Fixed Income Trader role (2019-2023, London), before joining Morgan Stanley in 2023.

Notes6

• Quant employment verification: CONFIRMED. Ambroise Marigot held a Trading Intern role at Jane Street (London, 2017) and a Fixed Income Trader role at Jane Street (London, 2019-2023), then Systematic Credit Trader at Morgan Stanley (London 2023-2025, Paris 2025-). Jane Street is a proprietary trading firm / market maker and Morgan Stanley is a global investment bank; both run quantitative/algorithmic trading. The evidence is actual employment (internship + full-time roles), not a student programme. Identity is supported by the IMO competitor record (France 2008/2009) plus the independent la-fabrique bio tying the same ENS / Corps des Mines / Jane Street trajectory. Source for employment claims is the LinkedIn index enrichment (index-only claim, not independent primary-source confirmation).
• Conference speaker bio (Fixed Income Leaders Summit) lists him as 'Head of European Automated Credit Trading, Morgan Stanley', and a LinkedIn post title references 'Credit Algorithmic Trader - Analyst', consistent with a systematic/algorithmic credit trading role at Morgan Stanley.
• Career timeline from LinkedIn index enrichment: Research Assistant, ENS (2012); Cybersecurity Engineer, Secure-IC (2014-2015); Data Scientist, AXA Global P&C (2015-2016); Desk strat, Rothesay Life (2016-2017); Internal Models Control, ACPR (2017); Trading Intern, Jane Street (2017); Pricing & Models unit, ARCEP (2018-2019); Fixed Income Trader, Jane Street (2019-2023); Systematic Credit Trader, Morgan Stanley (2023-2025 London, 2025- Paris). Between the 2017 internship and the 2019 full-time Jane Street role he worked in French regulatory/telecom modelling roles. Index-only claim.
• la-fabrique contributor bio (updated 2018-06-05): 'Diplome de l'Ecole Normale Superieure et agrege de mathematiques, Ambroise a travaille un an dans la securite numerique avant de rejoindre en 2015 le corps des mines. Avec une experience en tant que data scientist au sein du groupe AXA et un passage a Londres en tant que strat chez Goldman Sachs puis trader chez Jane Street...' - an independent contemporaneous bio corroborating ENS/agregation, Corps des Mines, AXA, and Jane Street trading. It names a Goldman Sachs strat stint where the LinkedIn index lists Rothesay Life; flag as a minor conflict.
• IMO results: bronze medal in 2008 (16 pts, rank 212, 60.6%) and bronze medal in 2009 (23 pts, rank 148, 74%), representing France - confirms the stated Olympiad identity.
• IMO contestant record for Ambroise Marigot (contestant id 17623) shows a ranking history across 2008 and 2009 for France, consistent with the stated Olympiad identity (France, IMO 2008, 2009).
• Authored a 2018 opinion piece for la-fabrique, 'Le Bio, une opportunite deja manquee pour l'industrie agroalimentaire francaise?' (co-authored with Adrien Manchon, 2018-06-05), written during his Corps des Mines training - a non-finance public writing sample from his early career.