Yijia Liu

Undergraduate student at Duke University majoring in Mathematics and Computer Science, with stated interest in mathematics, computer science and statistics. Competed multiple times for Singapore at the International Mathematical Olympiad (2013 Silver, 2014 Gold, 2015 Bronze). Undergraduate research at Duke (PRUV 2021, Duke Summer Research Fellow 2021) and a 2022 Quantitative Trading Internship at Jane Street.

Notes10

• Quant employment verification: CONFIRMED. The Duke/LinkedIn enrichment index (identity corroborated by the Duke IMO/olympiad, Putnam and DOmath primary pages) states a 'Quantitative Trading Intern' role at Jane Street dated 2022, location New York City Metropolitan Area; Jane Street is independently confirmed as a quantitative trading firm and liquidity provider by its own site, and a 2023 eFinancialCareers article separately names 'Yijia Liu, a recent Duke University graduate' among Jane Street's additions. The role is an internship (past work), not a student program, camp, competition, insight day or scholarship, so it meets the CONFIRMED threshold; no current employment can be asserted because the index does not show the role as current and no primary careers page confirms ongoing employment.2022
• Identity: Yijia Liu (also written 'Liu Yijia'), Singapore, represented Singapore at the IMO in 2013 (Silver), 2014 (Gold) and 2015 (Bronze) while at Raffles Institution; the same person is the Duke mathematics undergraduate.Jul 2013
• Distinguishing work from non-work: the IMO competitions, DOmath camp, PRUV and Summer Research Fellowship are competitions/student research programs, not employment; the only role that is a paid quantitative-finance internship is the 2022 Jane Street Quantitative Trading Internship.2022
• Notes on uncertainty: the Duke enrichment index shows a current title of 'PRUV 2021' and does not carry a post-2023 employer; no current employment beyond the 2022 Jane Street internship is asserted anywhere, so current role is left as the index's last-known state rather than inferred.
• After the 2022 Jane Street internship the public record goes quiet: few open-web traces post-2023 (a 2023 press reference to a 'recent Duke graduate' at Jane Street, a 2024 credit on an unrelated statistics paper, and a 2025 MISTA listing) — the freshest dated fact is the 2024 statistics-paper credit.2024
• Employment verification: Jane Street explicitly operates as a quantitative trading firm and liquidity provider (its own careers page describes it as such), so the 'Jane Street' role is a genuine quantitative-finance employer, not a company merely containing 'quant' in its name.2023
• Authored 'An induction theorem with positivity' with Jiuya Wang, Miao Gu, Zizai Cui and Max Fleischer, presented at the AMS 2022 Spring Eastern Virtual Sectional Meeting — undergraduate research output surfacing in a professional mathematics venue.Mar 2022
• Earned IMO Gold in 2014 with 32/42 points (rank 28), Silver in 2013 (28 pts, rank 61) and Bronze in 2015 (18 pts, rank 140) — a consistently high-performing three-year run for Singapore.Jul 2015
• LinkedIn profile headline is the Duke student profile (yijia-liu-370249102), listing BSc Mathematics and Computer Science at Duke and High School Diploma from Raffles Institution; used as the identity backbone.
• Index-only vs primary source: the Jane Street internship, PRUV, DOmath and coaching roles come from the LinkedIn/enrichment index (index-only claim); the IMO medals, Putnam appearances, Menger Award, DOmath project page and AMS talk are corroborated by independent primary/program pages.
• Cross-source pattern: the 2013-2015 IMO run for Singapore, the Duke Putnam/Menger honors and the 2020-2021 pure-math research points define a strong competition-mathematics trajectory; a 2022 quantitative trading internship is the only documented move into finance. No source states a causal link between the Olympiad record and the hiring.May 2022
• Named a PRUV 2021 research fellow at Duke (mentor Mark Haskins) working on G2 manifolds; also a Duke Summer Research Fellow 2021 doing computation of elliptic units for real quadratic fields.2021