We are Greythorn

As digital natives and seasoned investors, our team has provided consultancy and advisory services to over 50 blockchain and financial technology start-ups since 2011. As advocates of blockchain technology, the team set up cryptocurrency mining operations in 2013, advised and serviced companies aiming to launch their projects from 2016 to 2017, and has invested in decentralised finance since 2019.
Experienced in investing in traditional equity markets and blockchain companies. Early adopter of digital assets and co-founded a decentralised finance application that provides wallet services, swaps and DeFi products. Previously in the private equity arm of one of Singapore’s leading asset management funds, Dymon Asia Capital. Previously the fund manager at Blockchain Ventures.

Ryan Ang

Executive Director &
Investment Committee Member
Early adopter of digital assets since 2011, founded Garuda Crypto, The Cryptocurrency Fund Project and Kalian Cryptocurrency Fund, along with being deeply experienced in DeFi and dApps since 2019. Previously an ex-NAB Specialised Transaction Management Associate, experienced in fixed income structured products, KYC/AML, FATCA and CRS reporting. Holds a Master of Applied Finance from Monash University.

Jae Sik Choi

Portfolio Manager
Experienced in analytics across derivatives markets, focused on volatility & futures. Specialises in risk profiling & portfolio management. Previously involved as a lead data analyst within the transport & manufacturing sectors across the Asia Pacific.

Chiraag Patel


Experienced in fundamental and technical analysis of traditional equity and options markets. Well-versed in providing essential data for informed decision-making. Previous experience as an accountant at SPS.

Junrong Lu


A qualified lawyer and a graduate member of AICD. Experienced in investment banking, finance, and investment management. Currently Fund Management Advisor for Providence Asset Group and Managing Director of Hatchstone Capital. Previously CEO of VentureCrowd, Director of Port Hedland International Airport and Australia Pacific Airports Co., and Associate Director at AMP Capital’s Global Airports Group.

Sunny Yu

Qualified accountant (CPA) and lawyer with ​15+ years of experience in the financial industry and strategy advisory. Specialises in project financing, infrastructure and telecommunication. Currently Managing Director of Hatchstone Capital, Fund Management Advisor for Providence Asset Group. Previously executive roles at Telstra, KPMG, Royal Bank of Scotland and Advisian/Worley Parsons.

Andrew Kuik

Experienced in corporate advisory, and funds and investments management. Expertise across venture capital investment, strategy and capital raisings. Current Manager at VC investment and advisory firm Hatchstone Capital, and advisor to several start-ups across technology sectors.

Martin Yu