Jae Hyeok Heo

Quantitative trader and portfolio manager. Stanford MS in Financial Mathematics (2009) and BS in Mathematics/Economics (2008). Career in quantitative trading across Seoul and Hong Kong: junior/system trading at Mirae Asset Securities (2011-2013), high-frequency market making at DECEMBER & COMPANY (fint) (2013-2015), data science at Samsung Economic Research Institute (2016-2017), then quantitative trading and HFT platform development at Meritz Securities (2017-2022) and quant trading leadership at Qraft Technologies (2022-2025). LinkedIn enrichment lists current roles as Portfolio Manager at OP Investment Management (Hong Kong, building a multi-strategy quant hedge fund) and AI Strategy Division Head at Qraft Technologies.

Notes6

• Quant employment verification: CONFIRMED. Jae Hyeok Heo has an actual, primary-source-supported career in quantitative finance. LinkedIn enrichment (provider/index backbone, source c9fd6) lists: Quantitative Trader at Meritz Securities (2017-2022) where he 'designed and programmed the high frequency trading platform' and developed HFT strategies; Trader at DECEMBER & COMPANY (fint) (2013-2015) trading ELW/ETF with high-frequency market-making strategies; Junior Trader at Mirae Asset Securities system-trading team (2011-2013); and quant-trading leadership at Qraft Technologies (Alpha Trading Team Lead 2022-2024, Quant Trading Team Lead 2024, Quant Trading Division Head 2024-2025). Current Portfolio Manager at OP Investment Management, described as 'Building up multi strategy quant hedge fund'. Employer classification: Meritz Securities and Mirae Asset Securities are Korean securities/brokerage firms operating quant and HFT trading desks; DECEMBER & COMPANY (fint) is a data-driven/hedge-fund investment firm; Qraft Technologies (qraftec.com) is an AI/quant investment-management firm whose own description says the name is a portmanteau of 'Quant' and 'Craft' and that it builds AI-powered ETFs, AI trade execution and quantitative solutions; OP Investment Management (opim.com.hk) is a Hong Kong asset manager that in 2025 launched the AI-driven quant 'Qraft Soliton Master Fund' with Heo named CIO. Identity is supported (Stanford MS Financial Mathematics + BS Mathematics/Economics matching the LinkedIn profile, and the IMO 2003 gold medalist). Sources: LinkedIn enrichment (c9fd6); press coverage naming 'Jae Hyeok Heo, CIO of the Fund'.Sep 4, 2025
• Named CIO of the Qraft Soliton Master Fund, a Cayman-domiciled AI-driven quantitative strategy fund launched by OP Investment Management and Qraft Capital in 2025 — press coverage quotes him as CIO explaining the fund uses 'AI pattern recognition and disciplined quantitative processes'.Sep 4, 2025
• Holds two concurrent 2025 roles: Portfolio Manager at OP Investment Management (Hong Kong) and AI Strategy Division Head at Qraft Technologies, which suggests a dual role bridging Qraft's AI research and the OPIM-managed fund.Apr 2025
• Won a Gold medal for the Republic of Korea at the 44th International Mathematical Olympiad (IMO 2003) with a score of 83 — the Olympiad identity named in the task.Jul 2003
• At Meritz Securities (2017-2022) he designed and programmed the team's high-frequency trading platform and developed/managed HFT strategies, then led the AI Trading Team (2022) covering fixed income derivatives and ETF/ETN markets.
• Stanford University: MS in Financial Mathematics (2008-2009) and BS in Mathematics/Economics (2004-2008), per LinkedIn education.
• At DECEMBER & COMPANY (fint) (2013-2015) he traded ELW/ETF with high-frequency market-making strategies and built trading-simulation and market-analysis tools in Python, applying machine learning.
• Qraft Technologies employer classification: a genuine quantitative/AI investment-management firm (domain qraftec.com, company_id 91891294), not merely a name containing 'quant' — its own description states the name combines 'Quant' and 'Craft' and that it builds AI-powered ETFs, AI trade execution (AXE) and quantitative portfolio solutions.
• Career arc: 2011-2013 Mirae Asset Securities (system trading) -> 2013-2015 DECEMBER & COMPANY (HFT market making) -> 2016-2017 Samsung Economic Research Institute (data science) -> 2017-2022 Meritz Securities (quant trading/HFT platform) -> 2022-2025 Qraft Technologies (quant trading leadership) -> 2025 OP Investment Management (multi-strategy quant hedge fund).
• Worked as a Research Associate / data scientist at the Samsung Economic Research Institute (2016-2017), providing in-house consulting to Samsung Group financial affiliates in the Financial Industry & Strategy Department — a non-trading interlude between his two market-making stints.2016
• Early career: Junior Trader on Mirae Asset Securities' system-trading team (2011-2013), trading KOSPI200 index futures/options with intraday mid-frequency strategies and arbitrage.
• LinkedIn profile title/headline surface shows both 'Portfolio Manager' (OP Investment Management) and an 'Applied Scientist' snippet variant, and directory listings label him 'CIO, Qraft Soliton Fund, Multi Strategy Quant Fund' — the fund role is the most current public-facing title.