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Oi-Yee Choo

Oi-Yee is the Chief Executive Officer of Climate Impact X (CIX). She is responsible for overseeing the strategic direction of CIX, as well as developing and executing the company’s vision and mission to accelerate environmental impact at scale through the carbon markets. 

Oi-Yee is a seasoned, visionary leader with a background spanning 25 years in financial markets. She brings a wealth of experience in building and leading high-performing businesses across sectors, with a proven track record in fintech, innovation and capital markets. 

Oi-Yee was most recently CEO of ADDX, a blockchain-based private capital markets exchange in Singapore licensed and regulated by the Monetary Authority of Singapore. Under her leadership since 2020, ADDX strengthened its partnerships with global blue-chip companies and grew its platform to surpass US$1 billion in tokenised securities, one of the largest worldwide. Prior to ADDX, Oi-Yee spent over 20 years in investment banking, leading major capital markets transactions for clients across Asia, Europe and the US. She has held leadership roles at Citigroup, Morgan Stanley, Nomura and UBS. 

Oi-Yee is passionate about leveraging technological innovation to advance financial inclusion and create meaningful impact. She graduated from Nanyang Technological University with a Bachelor of Accountancy. She also holds a Master of Business Administration from Manchester Business School. 

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  • S&P Global Commodity Insights welcomes Climate Impact X as first carbon exchange to join Meta Registry

    Singapore and London, 17 June 2025 – S&P Global Commodity Insights welcomes Climate Impact X (CIX) as a first mover of the global exchange world to join its Meta Registry, a first-of-kind, infrastructure platform that connects registries and carbon market participants of all types worldwide. CIX, headquartered in Singapore with a presence in London, is a…

    Read Article: S&P Global Commodity Insights welcomes Climate Impact X as first carbon exchange to join Meta Registry
  • CIX discontinues older vintage Nature X and Cookstoves X price assessments

    Following the decision notice (MN2025/13) and public consultation (MN2025/09) that ran from 5 March 2025 to 4 April 2025, Climate Impact X (CIX) has discontinued the publication of several older vintage Nature X and Cookstoves X price assessments. The following price assessments have been discontinued as of 13 May 2025. Notwithstanding this discontinuation, trading of…

    Read Article: CIX discontinues older vintage Nature X and Cookstoves X price assessments
  • CIX will discontinue older vintage Nature X and Cookstoves X price assessments

    Following market consultation, Climate Impact X (CIX) has decided to discontinue the publication of price assessments of older vintage Nature X and Cookstoves X price assessments. The decision follows a proposal notice and a public consultation that commenced on 5 March 2025. The proposal was made following a routine evaluation of the level of activity…

    Read Article: CIX will discontinue older vintage Nature X and Cookstoves X price assessments

Oi-Yee Choo

MN

Oi-Yee is the Chief Executive Officer of Climate Impact X (CIX). She is responsible for overseeing the strategic direction of CIX, as well as developing and executing the company’s vision and mission to accelerate environmental impact at scale through the carbon markets. 

Oi-Yee is a seasoned, visionary leader with a background spanning 25 years in financial markets. She brings a wealth of experience in building and leading high-performing businesses across sectors, with a proven track record in fintech, innovation and capital markets. 

Oi-Yee was most recently CEO of ADDX, a blockchain-based private capital markets exchange in Singapore licensed and regulated by the Monetary Authority of Singapore. Under her leadership since 2020, ADDX strengthened its partnerships with global blue-chip companies and grew its platform to surpass US$1 billion in tokenised securities, one of the largest worldwide. Prior to ADDX, Oi-Yee spent over 20 years in investment banking, leading major capital markets transactions for clients across Asia, Europe and the US. She has held leadership roles at Citigroup, Morgan Stanley, Nomura and UBS. 

Oi-Yee is passionate about leveraging technological innovation to advance financial inclusion and create meaningful impact. She graduated from Nanyang Technological University with a Bachelor of Accountancy. She also holds a Master of Business Administration from Manchester Business School. 

Oi-Yee Choo

Oi-Yee is the Chief Executive Officer of Climate Impact X (CIX). She is responsible for overseeing the strategic direction of CIX, as well as developing and executing the company’s vision and mission to accelerate environmental impact at scale through the carbon markets. 

Oi-Yee is a seasoned, visionary leader with a background spanning 25 years in financial markets. She brings a wealth of experience in building and leading high-performing businesses across sectors, with a proven track record in fintech, innovation and capital markets. 

Oi-Yee was most recently CEO of ADDX, a blockchain-based private capital markets exchange in Singapore licensed and regulated by the Monetary Authority of Singapore. Under her leadership since 2020, ADDX strengthened its partnerships with global blue-chip companies and grew its platform to surpass US$1 billion in tokenised securities, one of the largest worldwide. Prior to ADDX, Oi-Yee spent over 20 years in investment banking, leading major capital markets transactions for clients across Asia, Europe and the US. She has held leadership roles at Citigroup, Morgan Stanley, Nomura and UBS. 

Oi-Yee is passionate about leveraging technological innovation to advance financial inclusion and create meaningful impact. She graduated from Nanyang Technological University with a Bachelor of Accountancy. She also holds a Master of Business Administration from Manchester Business School.