Ninor Mansor
Ninor Mansor is a crypto investor who co-founded ByteSize CapitalByteSize CapitalByteSize Capital was a private crypto fund and research firm founded by Ninor and Ninos Mansor. It combined with Arrington XRP Capital in 2019, with both founders joining the partnership.Open the full entry with Ninos MansorNinos MansorNinos Mansor is a crypto investor who co-founded ByteSize Capital with Ninor Mansor, was an Arrington Capital partner from 2019 to 2022, and appeared as an Edessa Capital general partner in 2023.Open the full entry, was an Arrington CapitalArrington CapitalArrington Capital is a firm that invests in digital assets and Web3 and manages funds including Arrington XRP Capital Fund; since 2025, through that fund, it has served as sponsor of the special purpose acquisition company Armada Acquisition Corp. II, driving its merger with the XRP treasury company Evernorth.Open the full entry partner from 2019 to 2022, and appeared as an Edessa Capital general partner in 2023.
Contents7 sections
Key facts
Around 2018: ByteSize Capital
Mansor and his brother Ninos invested private capital through ByteSize Capital and developed crypto research and trading tools. Michael ArringtonMichael ArringtonMichael Arrington is an American entrepreneur and investor who founded the technology publication TechCrunch in 2005, created Crunchbase in 2007, sold TechCrunch to AOL in 2010, and went on to found CrunchFund and the crypto-asset investment firm Arrington Capital.Open the full entry met them in 2018 before bringing their team into his fund.[1]
March 2019Joining Arrington’s partnership
ByteSize Capital and Arrington XRP Capital announced their combination in March 2019. Both brothers joined Michael Arrington and Heather HardeHeather HardeHeather Harde is a technology-media executive and investor, formerly CEO of TechCrunch and a co-founder of Arrington Capital. She became a strategic adviser to the investment firm in 2023.Open the full entry in the partnership, integrating research, data and backtesting tools into the investment process.[2]
March 2020Bitcoin risk research
Ninor authored Bitcoin Risk and The Once-In-Cycle Trade, comparing historical risk-adjusted BitcoinBitcoinBitcoin (common symbol BTC) is an open peer-to-peer electronic cash protocol, network, and native digital asset. Full nodes independently verify transactions and blocks according to the consensus rules; transactions are recorded as UTXOs, and blocks are organized into a public ledger through proof of work. Bitcoin is not issued or managed by any single institution, but using, holding in custody, and trading it still involve key, privacy, market, and legal risks.Open the full entry returns using Sharpe ratios and entry timing. It distinguished long-run performance from interim drawdowns and treated post-halving opportunities as historical observations rather than guaranteed future outcomes.[3]
August 2022Leaving Arrington Capital
On August 18, 2022, Arrington announced the brothers’ departure to start another venture, crediting them with involvement in more than 100 deals and work on the AlgorandAlgorand (ALGO)Algorand is a public layer-1 blockchain proposed by Turing Award winner and MIT professor Silvio Micali. Its native token is ALGO, it uses a “Pure Proof-of-Stake” consensus based on verifiable random functions and cryptographic sortition, and its mainnet launched in June 2019. The Algorand Foundation, which is responsible for ecosystem growth, token supply, and governance, was originally based in Singapore and moved back to Delaware in the United States in 2026; in recent years the network has focused on payments, asset tokenization, and post-quantum cryptography.Open the full entry and Moonbeam funds.[1]
February 2023Edessa Capital
The Princeton × DeSo startup event listed both brothers as Edessa Capital general partners for a February 18, 2023 discussion on starting a fund.[4]
Related Organizations, Websites, and Public Accounts
Related people and organizations include Ninos Mansor, Michael Arrington, Heather Harde, ByteSize Capital, Arrington Capital and Edessa Capital. Public event page: https://princeton.deso.com/princeton/ (opens in a new window).[4]