sFOX
Qualified Custodian
Established Est. 2014
United States
21Rates Quality Score: 6.5/10
sFOX (est. 2014, Los Angeles) is an institutional crypto prime dealer providing best-execution trading across 30+ venues, custody, and lending services. Serves RIAs, hedge funds, family offices, and corporations with FDIC-insured USD deposits through banking partners.
Custody Model
ModelHosted Custody
LicensesFinCEN MSB, state money transmitter licenses
RegulatoryFinCEN BSA/AML, state money transmission laws
JurisdictionUnited States (FinCEN MSB)
Fees & Minimums
Fee StructureCustom institutional pricing. Trading and custody bundled. Algorithmic execution across multiple venues. Contact for quotes.
Min BalanceContact for requirements
WithdrawalsCustom institutional limits
Security
Cold Storage95%+ cold storage
InsuranceInsurance coverage through institutional partners
Proof of Reserves No
Asset SegregationYes
AuditsAnnual SOC 2 audits
Features
API Access Available
Mobile App No
Hardware Wallet Not supported
Institutional Available
Integrated Trading Yes
AssetsBTC, ETH, SOL, 80+ digital assets
Frequently Asked Questions About sFOX
sFOX is a qualified custodian, meaning it is a regulated financial institution authorised to hold client assets. This is important for institutional investors who are legally required to use a qualified custodian under regulations such as the SEC Custody Rule.
sFOX carries the following insurance coverage: Insurance coverage through institutional partners. Always confirm specific coverage terms, limits, and exclusions directly with sFOX before depositing assets.
sFOX stores 95%+ cold storage of assets in cold storage (offline). Cold storage protects against remote hacking by keeping private keys disconnected from the internet.
sFOX's fee structure: Custom institutional pricing. Trading and custody bundled. Algorithmic execution across multiple venues. Contact for quotes.. Custody fees are typically charged as an annual basis-point fee on assets under custody or a flat monthly fee.
The minimum balance requirement at sFOX is Contact for requirements. This may vary based on account type and service tier.
About this analysis
21Rates Editorial TeamBitcoin Financial Research Analysts
Our research team analyses Bitcoin custody providers using proprietary quality scoring, regulatory research, and user reviews. We independently verify custody terms and maintain up-to-date information to help you make informed decisions.
Last verified: August 2026