Yoshimasa Hayashi

Overview

Yoshimasa Hayashi serves as Chief Operating Officer at OneChronos as of December 2025[1][2]. Hayashi previously founded and led MAVOS from April 2023 to December 2025[3], while also serving as Regional Director at Avex Asia from November 2023 to May 2025[4]. Hayashi's earlier career spanned over a decade at Credit Suisse, beginning as Tokyo Production Support Manager from April 2004 to June 2007[7], advancing to Vice President in Electronic Trading for Cash Equities from June 2007 to June 2012[6], and later serving as Director of Electronic Trading for Listed Derivatives from June 2012 to March 2024[5]. Hayashi holds a Bachelor of Science in Mechanical Engineering from Carnegie Mellon University, completed between 1998 and 2002[8], and attended Canadian Academy from 1989 to 1998[9].

Career history

1. Chief Operating OfficerDec 2025 to presentOneChronos
2. MFounder & CEOApr 2023 to Dec 2025MAVOS
3. AARegional DirectorNov 2023 to May 2025Avex Asia
4. Director - Electronic Trading - Listed DerivativesJun 2012 to Mar 2024Credit Suisse
5. Vice President - Electronic Trading - Cash EquitiesJun 2007 to Jun 2012Credit Suisse
6. Tokyo Production Support ManagerApr 2004 to Jun 2007Credit Suisse

Education

1. Bachelor of Science (BS), Mechanical Engineering1998 - 2002Carnegie Mellon University
2. CACanadian Academy1989 - 1998