Investment & quant researcher who builds.
I turn a problem into a hypothesis, build it to test the idea, and leave the evidence behind.
Investment Research · Quantitative Methods ·
Applied AI Systems · Product Building
Based in Gyeonggi, South Korea. I design and implement with AI coding tools and confirm results with tests, CI and written evaluation criteria.
- Freelance service planning and QA for an AI fashion content startup (since 2026.05).
- Independent research consultant on WorldQuant BRAIN: 128 alphas submitted in 9 regions (2026.06 to 2026.10). Median Sharpe 2.29, in-sample figures.
- Toss Apps-in-Toss mini-app 오를까, a daily gasoline price vote, live since 2026.08.
- An evidence-first research app that answers questions about listed companies from filings (private, in development).
| Where | What | Evidence |
|---|---|---|
| Localised Entry, Global Frontier | SSRN working paper (sole author, 2026). The $20 and $100–500 AI tiers cost almost the same dollar amount in every App Store storefront, while the same firms' YouTube and X Premium are 50–73% cheaper in the median low- or lower-middle-income storefront; only capped entry tiers such as ChatGPT Go are priced locally. A year of a $20 plan equals 0.65% of income in the median high-income country and 29% in the median low-income one. SSRN 7535900 · data, code and page archives on Zenodo · Korean edition of version 2.1, 39 pages | Two audits of every App Store storefront (Sep and Oct 2026): 34 apps, 218 storefront codes, plus Google Play and Microsoft web prices |
| noah-market-briefs | Static archive of Korea and US pre-market and closing briefs. Every record carries its source and an as-of time. | 106 records, verify --strict gate |
| LS CRUDE | Two-person research on WTI crude with alternative data; I built the data, features and dashboard. The index gave no forecast gain, and we published that. Dashboard | 73 candidates logged KEEP / PARK / KILL |
| derivatives-desk-excel | Bond PV01, option Greeks, scenario P&L and KOSPI200 basket arbitrage in Excel/VBA. | 3 self-check macros |
| Where | What | Evidence |
|---|---|---|
| Noah Trading Desk | Quant research desk where every number carries a calculation receipt. Forked from a public mock-trading repository and extended; the claims cover my changes only. Live demo | CI passing as of 2026-10-10 (3 jobs: unit, integration, image build); 7 engine errors fixed |
| Lumina | Research app that puts an evidence badge on every sentence of an AI answer and keeps a decision journal. Extended from a public codebase. | AI signal AUC 0.513 vs 0.649 baseline, not adopted |
| dartcatcher | Docker pipeline for Korean DART filings. | 45 records matched the official API |
| leanpeek | CLI that turns a QuantConnect LEAN backtest JSON into a one-line summary and an HTML report. PyPI | Release 0.3.1 |
| loopuccino | CLI that checks whether an AI coding session's handoff notes are complete enough to resume. PyPI | Release 0.10.0, standard library only |
| NONGGOO | Basketball match platform built with a partner, 2025.07 to 2026.07. I built the web and mobile apps. Live web · App Store · Google Play (Capacitor-based app) | 229 of 234 closed PRs merged |
AI coding tools wrote much of the code in these repositories. Scope, decisions and verification are mine. As of October 2026, 7 public GitHub repositories have a passing recent CI run.
- Korean analysis and essays on companies and markets (24 pieces, 2025.12 to 2026.06), written by me from filings.
- English AI Quant Notes (16 pieces, 2026.09), written by AI under sourcing and review rules I designed and ran.
- Public investment records (3), the first with entry price and stop rule written before the trade.
| Credential | Date |
|---|---|
| 투자자산운용사 (Certified Investment Manager), KOFIA | 2026.01 |
| 벤처투자분석사 (Certified Venture Investment Specialist), KVCA | 2026.06 |
| 금융투자분석사 (Certified Research Analyst), KOFIA | 2026.07 |
| APEX (AI Performance Examination) certificate, 666/1000, Day1 Company | 2026.08 |
| WorldQuant BRAIN, Genius Gold | 2026 Q3 |
| EO VC SPRINT 9, completed | 2025 |
| 코멘토 「퀀트 운용 직무 체험」, completed | 2026.08 to 2026.09 |
| 이스트소프트 이스트캠프 AI 퀀트 4기 (K-Digital Training, 800 hours) | 2026.06 to 2026.11 (expected) |
Service operations and PM roles (2019 to 2020). Startups: Mongle (2020 to 2021) and DeepSide (2022 to 2023, joint representative), which raised two seed rounds totaling KRW 150M from Korea Investment Accelerator (2022) and Sopoong Ventures (2023). Pricing-data review at Coupang (2023 to 2024), then Global-organisation PM at 일만백만 (2024).
- LinkedIn: noah-taehwan
- Substack: taehwannoah.substack.com