Top 5 FinTech Angel Investors in Portugal in May 2025

Last updated: May 2025 A list of 5 angel investors that invest in Fintech startups based in Portugal. We rank investors based on the number of investments they made in Fintech companies from Portugal. We update this investor list every month.

Top 5 FinTech Angel Investors in Portugal in May 2025

Investor	FinTech Portugal investments
Arthur Hayes	2
Tue Lumbye	1
Alex Atallah	1
Balaji Srinivasan	1
Crypto Dog	1

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Investor list

After graduating with a degree in economics from the Wharton School of Business, Arthur lived in Hong Kong as an equity derivatives trader. He was the market-maker for Deutsche Bank and Citibank’s Exchange Traded Funds (ETF) businesses. He also has extensive experience trading equity index futures, forwards, and swaps as well as non-deliverable FXforwards. Arthur brings a deep understanding of how to structure and trade financial derivatives.

Investment focus

Blockchain, Cryptocurrency, Financial Services
Seed, Funding Round, Pre-Seed
United States, Singapore, India

Portfolio highlights

Cytonic — Cytonic is a multi-virtual-machine blockchain. Cytonic is compatible with blockchains such as Bitcoin, Ethereum, and Solana.
Nillion — The Secure Processing Layer of Web3
Superform Labs — THE UNIVERSAL INTERFACE FOR YIELD IS FORMING

Tue Lumbye is the Head of Danish Market at Better Collective. He attended Syddansk Universitet - University of Southern Denmark.

Investment focus

Sports, FinTech, Software
Seed, Angel, Pre-Seed
Finland, Portugal

Portfolio highlights

Betmarkets — Betmarkets is a web platform that allows bettors to invest in sports betting. Their platform is entirely automated to ensure that they have access to all the best prices and the maximum liquidity, bringing this benefit to all users in a split-second. They operate under an oath of service towards all their users, putting them as their firstpriority. They also prevent problem gambling by putting professionals in charge of the final decision and by ensuring that all behaviour is pre-defined, preventing users from increasing the number of bets and from chasing losses.
Measurelet — Measurelets project a technological toilet for the healthcare sector.
Attractive.ai — Attractive.ai analyse user experience by machine, and with a model that can scale to cover the whole of the web.

Alex Atallah is a Co-Founder of OpenSea. Attended Stanford University.

Investment focus

Gaming, Blockchain, Video Games
Seed
Portugal

Portfolio highlights

METAMORPH — Blockchain gaming company

Balaji S. Srinivasan is the Co-Founder and Board Member of Coin Center. He was the CTO of Coinbase and cofounder of Counsyl, Earn, Teleport, and Coin Center. He was previously CEO at Earn.com, which was recently sold to Coinbase. Prior to taking the CEO role at Earn.com, Dr. Srinivasan was a General Partner at Andreessen Horowitz. Prior to joininga16z, he was the co-founder and CTO of Founders Fund-backed Counsyl, where he won the Wall Street Journal Innovation Award for Medicine and was named to the MIT TR35. Dr. Srinivasan holds a BS, MS, and PhD in Electrical Engineering and an MS in Chemical Engineering from Stanford University. He also teaches the occasional class at Stanford, including an online MOOC in 2013 which reached 250,000+ students worldwide.