Ikumi Shimizu

mathematics/tech -> trading

Notes5

• Quant employment verification: CONFIRMED. The LinkedIn profile for ikumi-shimizu (headline 'JGB Trader'), as returned by the enrichment index (index-only, not independent primary confirmation), lists an actual internship at Capula Investment Management LLP (London-based systematic/fixed-income quant hedge fund) and rates-trading roles at BNP Paribas (a global bank). Employer classification: Capula = quant hedge fund; BNP Paribas = bank interest-rate (rates) trading desk, quantitative-finance adjacent; 3D Investment Partners = Singapore activist/value equity manager, NOT quant; Dwango = consumer-tech, not finance. Identity is supported indirectly: the LinkedIn work history includes Software Engineer at Dwango, the operator of N High School, where the IOI 2018 Japan team member (清水郁実) was a student. Caveat: no primary page (firm roster, the person's own site, or a news item) was read confirming these roles; the role evidence is index-derived. The school named on LinkedIn (Shibuya Junior/Senior High School) differs from the IOI roster school (N高等学校).
• IOI 2018: represented Japan at the 30th International Olympiad in Informatics (Japan-hosted, Tsukuba, Sept 2018), winning a Bronze medal (world rank 91/335); listed as 2019 delegation member (guest) for Japan. Primary source: official IOI statistics and the IOI Japan committee roster.
• The IOI Japan committee roster (ioi-jp.org) names the Japanese team member 清水 郁実 (Shimizu Ikumi), grade 3, school N高等学校 (N High School, a KADOKAWA/Dwango correspondence school), registered school location Okinawa; IOI result bronze. This is the primary identity record for the IOI identity.
• N High School published a news item on its student 清水郁実 earning the IOI 2018 Japan-team selection, corroborating the Olympiad identity and the N High School / Dwango-group tie.
• Education per index: The University of Tokyo (理科1類 entry, Bachelor of Economics, finance), UC Santa Barbara (Mathematics B.A. Honors, unfinished), Shibuya Junior and Senior High School. Index-only.
• Caller-supplied role dates (unverified, not independently sourced): Capula internship 2024-06 to 2024-09; 3D Investment Partners Equity Research 2023-10 to 2024-11. These dates come from the task lead, not from a page read, so they are not treated as confirmed.
• GitHub candidate '193s' (github.com/193s) displays the name 'Ikumi Shimizu' and links Codeforces 193s and a CTF blog (193s.github.io, writeups dated 2015); identity not confirmed as the same person, so no github_url is asserted.