Amentum Investment Management
Crossover fundSan Francisco Β· 2 people tracked
Investment thesis
The Amentum Fund operates as a hybrid hedge/VC enterprise investing in blockchain-based and digital asset companies and their surrounding ecosystem. Beyond standard investments, the team provides project advisory services to certain teams, drawing on its general partners' advisory track record. Its selection process emphasizes the viability, security, interoperability, and sustainability of a project's underlying protocols. The firm prioritizes open infrastructure and democratized organizational structures while promoting a sustainable physical commons. It welcomes outreach from potential partners interested in investment, advisory, or collaboration.
Source: firm website, verified Aug 3, 2026.
Team Β· 2 people
from the firm's website
What they invest in
from 6 of 12 portfolio companiesCrypto & Web3 Γ6Developer Tools Γ4Cybersecurity Γ1Data & Infrastructure Γ1Fintech Γ1LegalTech Γ1SaaS Γ1
HQs:United StatesΓ3
Investments Β· 12 tracked
founders shown can be your intro pathAudius operates a free music streaming service positioned for artists, labels and fans.
San Francisco, US
Roneil Rumburg(Executive Officer, Director, Promoter)in
Co-investorsCoinbase VenturesCollab+CurrencyCultur3 CapitalDeepTech VenturesDria VenturesGeneral Catalyst+7 more
An infrastructure layer that scales Ethereum, enabling instant, low-cost transactions in wallets, browsers, and applications.
Connext provides xCall, a developer tool that enables applications to interact with users, tokens, and other applications across multiple blockchains.
Crypto & Web3Developer ToolsSan Francisco, US
Arjun Bhuptani(Executive Officer, Director)Layne Haber(Executive Officer, Director)inRahul Sethuram(Executive Officer)
Co-investorsA.Capital VenturesCVP NoLimitD1 VenturesFenbushi CapitalFigmentIOSG Ventures+13 more
Handshake is a decentralized, peer-to-peer naming and certificate authority protocol that serves as an alternative to centralized DNS systems and certificate authorities.
Crypto & Web3Data & InfrastructureDeveloper Tools
Joseph Poon(Co-Founder / Protocol Developer)Andrew Lee(Co-Founder)Christopher Jeffrey(Co-Founder / CTO)Tieshun Roquerre(CEO, Namebase (leading Handshake domain registrar/exchange))
BoardMike Duboe(Venture Partner, Greylock Partners (investor listed on Greylock's Handshake portfolio page))
Co-investorsa16z cryptoAusum VenturesD1 VenturesDraper AssociatesFounders FundGenblock Capital+5 more
Namebase enables users to search and register decentralized top-level domains across thousands of extensions.
Crypto & Web3Developer Tools
Co-investorsCoinbase VenturesMorgan Creek Capital
Sentinel is a blockchain-based protocol and SDK for building decentralized VPNs, where node discovery, sessions, payments, and bandwidth run on-chain across a network of independent node operators.
Crypto & Web3CybersecurityDeveloper ToolsReno, US
Co-investorsAdvanced BlockchainGenblock CapitalWoodstock FundIntel CapitalScottish EnterpriseSFC Capital+3 more
Portfolio news
latest coverage across their companiesSentinel Β· startupmag.co.uk Β· Nov 25, 2025
Frequently asked questions
- How many investments has Amentum Investment Management made?
- Amentum Investment Management has 12 tracked investments.
- What sectors does Amentum Investment Management focus on?
- Amentum Investment Management focuses on Crypto & Web3.
- Where is Amentum Investment Management located?
- Amentum Investment Management is headquartered in San Francisco, US.
- Who does Amentum Investment Management co-invest with?
- Amentum Investment Management most often shares deals with Coinbase Ventures, D1 Ventures, Genblock Capital, among 28 tracked co-investors.
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