Pinai Linwong

Pinai Linwong is a Japan-based finance professional. Public records and LinkedIn enrichment (index-only, not independently primary-source confirmed) list him as Portfolio Manager at Okasan Online Securities Co., Ltd. from April 2024, previously Senior Portfolio Manager at Daiwa Fund Consulting Co., Ltd. (2011-2024) and Trader & Analyst at Daiwa Securities SMBC Co. Ltd. (2008-2011), before which he was a researcher at Hitachi's central and system-development laboratories. He holds a PhD and Master's in Information Sciences from Tohoku University, a BEng from Chulalongkorn University, and an MBA from Zurich Elite Business School. As a student he represented Thailand at the International Mathematical Olympiad in 1991 and 1992, winning a silver medal in 1992.

Notes5

• Silver medal at IMO 1992 representing Thailand: rank 51, 27 points (P1 7, P2 1, P3 5, P4 7, P5 5, P6 2); also an IMO 1991 participant for Thailand.Jul 1992
• Quant employment verification: UNRESOLVED. The only employment evidence found is index-only (LinkedIn profile enrichment), which is not independent primary-source confirmation. It lists Trader & Analyst at Daiwa Securities SMBC Co. Ltd. (2008-03 to 2011-09), Senior Portfolio Manager at Daiwa Fund Consulting Co. Ltd. (2011-2024, domain daiwacm.com), and Portfolio Manager at Okasan Online Securities Co., Ltd. (from 2024-04). Employer classification: Daiwa Securities SMBC is an investment-banking/securities arm of the Daiwa Securities Group; Daiwa Fund Consulting is a pension/asset-management consulting and advisory firm within the Daiwa group; Okasan Online Securities is an online brokerage of the Okasan Securities Group. All are finance/securities firms, but no primary source establishes that any role was quantitative, systematic, or algorithmic trading, and no primary source independently links these finance roles to the IMO subject Pinai Linwong. Earlier 'Researcher' roles at Hitachi Central Research Laboratory and Hitachi System Development Laboratory (2002-2008) are engineering/telecom research, not finance. Conclusion: actual employment in quantitative finance can be neither confirmed nor excluded from available evidence.
• Co-authored peer-reviewed queueing-theory papers with Nei Kato and Yoshiaki Nemoto: 'A Polynomial Factorization Approach for the Discrete Time GIX/G/1/K Queue' (Methodology and Computing in Applied Probability, Jan 2004) and 'Buffer-Size Approximation for the Geo/D/1/K Queue' (ICN 2001), matching a telecom-networking research background consistent with the Hitachi research years.Jan 2004
• Academic record: PhD and Master's in Information Sciences, Tohoku University, and a BEng in Electrical, Electronics and Communications Engineering, Chulalongkorn University (all index-only via LinkedIn enrichment).
• MBA from Zurich Elite Business School (2022-2024, index-only), cited by the school's promotional post celebrating him.Apr 2024
• Zurich Elite Business School is an online/private business school; its celebration of Linwong as a 'top real-world' MBA achievement is a marketing post, not independent verification of his role or results.Apr 2024