The thirty-second version
FDUSD is a US-dollar stablecoin issued by First Digital Labs, a subsidiary of First Digital Trust Limited, a Hong Kong-licensed trust and custody company. The token launched on June 1, 2023, initially on Ethereum and BNB Smart Chain, and was integrated into Binance as a replacement settlement asset for BUSD over the second half of 2023. Reserves are held in segregated accounts and attested monthly by Prescient Assurance. As of mid-2026, FDUSD circulating supply sits at roughly 3 to 4 billion, ranking it inside the top five US-dollar stablecoins by market cap.
Who First Digital Trust is
First Digital Trust Limited was established in 2017 in Hong Kong as a trust and custody business. The company is licensed under the Trust Ordinance and is supervised by the Securities and Futures Commission (SFC) for trust services. The original business was tokenisation infrastructure and digital-asset custody, not stablecoin issuance. The FDUSD product was added in 2023 as a separate operating subsidiary (First Digital Labs).
The company is privately held. Its founder, Vincent Chok, has a background in trust and corporate-services work in Hong Kong. Public-record material is thinner than for Paxos or Circle; the company has not raised venture funding from US firms and does not have an SEC registration. The Hong Kong base means that the supervisory burden is the HKMA / SFC framework rather than US-state-level trust regulation.
The Hong Kong stablecoin framework
The HKMA published a discussion paper on stablecoins in 2022, followed by a consultation paper in late 2023 and a finalised legislative proposal in early 2024. The Stablecoin Issuer Licensing Ordinance was passed by the Legislative Council in 2024 and entered into force in 2025, with a transition window through early 2026. The framework:
- Requires fiat-referenced stablecoin issuers operating in or marketing to Hong Kong to obtain a licence from the HKMA.
- Sets minimum reserve-asset standards: full backing, high-quality liquid assets (cash, short-dated government securities), segregation from issuer corporate assets.
- Requires monthly attestations of reserves with annual audit.
- Imposes redemption-at-par obligations within stated timeframes (typically one business day).
- Restricts marketing to Hong Kong retail customers without a licence, and requires the issuer to be a Hong Kong-incorporated entity.
The framework was deliberately built to be one of the more detailed stablecoin regimes in Asia, sitting in parallel with Singapore's MAS framework (published 2023) and the EU's MiCA (in force 2024). The political logic is that Hong Kong wants to be a regulated hub for digital assets without becoming an offshore haven. FDUSD's positioning — Hong Kong-licensed trust, dollar-backed, transparent reserves — fits the framework.
The Binance partnership
The product's growth is inseparable from Binance. The 2023 launch coincided with the BUSD wind-down (covered in the BUSD delisting timeline). Binance progressively migrated spot pairs from BUSD to FDUSD between July and December 2023, with auto-conversion at the end of that window. By early 2024, FDUSD-quoted pairs were the second-largest trading-pair group on Binance spot, after USDT-quoted pairs and well ahead of USDC.
The economic mechanism Binance has used to grow FDUSD is straightforward: zero-fee trading on selected FDUSD-quoted pairs (BTC-FDUSD, ETH-FDUSD, BNB-FDUSD) for retail accounts. The same playbook was used with BUSD between 2019 and 2022. The fee subsidy effectively encourages working balances to sit in FDUSD on the exchange rather than rotating to USDT or USDC, which carry trading fees on the same pairs.
The dependence on Binance is also FDUSD's biggest concentration risk. Roughly 75 to 85% of FDUSD circulating supply lives on Binance at any given moment, based on the chain analytics published by Token Terminal and DeFiLlama. If Binance changes its zero-fee policy or if Binance itself comes under regulatory pressure, the FDUSD demand picture changes immediately. This is the same structural pattern that BUSD had, with a different issuer behind it.
What FDUSD reserves look like
First Digital Labs publishes monthly attestations through Prescient Assurance, a Canadian-based audit firm specialising in attestations rather than full audits. The attestations report total tokens outstanding, total reserve assets, and a categorical breakdown of reserves (cash, US T-bills, money-market funds, overnight repos). The reports are not full audits and do not opine on internal controls.
The reserve composition reported in recent attestations sits roughly:
- US Treasury bills (T-bills). Approximately 65 to 75% of reserves, held with US-regulated custodian banks. Maturity profile under 90 days.
- Cash deposits. Approximately 15 to 25% of reserves, held across multiple regulated banks. The deposit institutions are not disclosed at name level (in contrast to Paxos's USDP, which has named bank disclosures).
- Money-market fund holdings. Approximately 5 to 10%, in government money-market funds.
- Overnight reverse repurchase agreements. Variable, used for short-term liquidity management.
The composition is conservative by 2026 standards. The reserves do not include commercial paper, secured loans, gold, Bitcoin or any of the longer-duration assets that historically appeared on USDT's books. The headline risk on FDUSD reserves is therefore not asset-quality risk; it is concentration risk on the disclosed-bank-side custody arrangements that the attestation does not enumerate.
The Tron USDT comparison
Worth a section because the two tokens are often grouped as "exchange-default stablecoins" but are operationally very different:
| Dimension | FDUSD | Tron USDT |
|---|---|---|
| Issuer | First Digital Labs (Hong Kong) | Tether Limited (El Salvador, formerly BVI) |
| Networks | Ethereum, BSC, Sui | Tron, Ethereum, 10+ other chains |
| Primary use | Exchange settlement | Cross-border payments, exchange settlement |
| Reserve transparency | Monthly attestation, Prescient Assurance | Monthly attestation, BDO Italia |
| Reserve composition | T-bills + cash + MMF (no risk assets) | T-bills + cash + small BTC + secured loans |
| Off-exchange use | Low (mostly stays on Binance) | Very high (dominant in payments and remittance) |
| Regulatory base | HKMA (in transition to formal licence) | El Salvador licence + multi-jurisdiction inquiries |
The two tokens occupy different roles. FDUSD is, in practical terms, a Binance-internal unit of account with limited off-exchange utility. Tron USDT is a global payment rail with deep cross-border use, particularly in Southeast Asia, Latin America and parts of Africa. Holders comparing the two should ask what use case the holding is for. The answers usually point to different tokens.
What the desk pays attention to on FDUSD
The HKMA licence transition
The licence application process opened in 2025. As of mid-2026, the first round of approvals has been granted to several issuers in pilot programmes, but the full operating licences for major USD-stablecoin issuers are still in process. First Digital's progress through this queue is the most directly relevant supervisory signal for FDUSD. A licence approval would meaningfully strengthen the regulatory backstop; a delay or rejection would be a substantial overhang.
The Binance settlement-volume share
FDUSD's market cap moves with Binance's promotional decisions more than with broader market flows. The most informative real-time signal for FDUSD demand is the share of Binance spot volume that settles in FDUSD versus USDT. A shift in that share (typically signalled by Binance's zero-fee announcements) is a leading indicator for FDUSD supply changes.
The single-issuer concentration on Binance
Roughly 80% of FDUSD circulates inside Binance. The single-venue concentration is meaningfully higher than for USDT or USDC, which are distributed across many exchanges, payment processors and on-chain protocols. The concentration is not, in itself, a reserve-quality issue, but it does mean that any Binance-specific event (regulatory action, prolonged outage, deposit / withdrawal pause) would translate quickly into an FDUSD-specific event.
If you hold FDUSD, the practical questions
How much should you hold? If you trade on Binance regularly, holding FDUSD in working balance is rational because the zero-fee structure on selected pairs makes execution cheaper. For balances you do not need to trade with in the next 30 days, the case for FDUSD over USDT or USDC is thinner — the trading-fee advantage does not apply to passive holdings.
Where do you redeem? Direct redemption through First Digital Labs is available for accounts that complete onboarding, but the process is institutional in scale (minimum sizes apply, typically six figures). For retail, redemption to USD is via exchange (Binance is the obvious route; OKX and Bybit also list FDUSD-USDT pairs). The redemption-at-par obligation under the HKMA framework applies in the new ordinance but the operational mechanics are not yet exercised in scale-stress.
How does it sit against the BUSD precedent? The clearest difference is the regulatory framework: BUSD was issued under a NY trust charter with NYDFS supervision; FDUSD is issued under HK trust law with the HKMA framework. The NYDFS action against Paxos / BUSD was driven by oversight-relationship concerns, not by reserve issues. An analogous action against FDUSD would need to come from the HKMA, not from NYDFS — which means the political and supervisory context is different. Whether that difference is reassuring depends on your view of HKMA's relative willingness to act.
If you want to act on this
The narrow action is to size FDUSD holdings to the use case. If you trade on Binance, the zero-fee advantage justifies holding FDUSD in working balance; otherwise USDC or USDT carry less single-venue concentration. The desk uses Binance for spot operations with FDUSD as the working stablecoin on the exchange and a USDT / USDC mix for off-exchange balance. The Binance referral link uses code BN16188; registering does not change your fees.
HKMA filings we read
- First Digital Labs monthly attestations (firstdigitallabs.com / fdusd.io), Prescient Assurance reports.
- Hong Kong Monetary Authority, "Stablecoin Issuers Licensing Ordinance — Implementation Notes", 2024-2025.
- HKMA discussion paper, "Discussion Paper on Crypto-assets and Stablecoins", January 2022.
- Binance announcements re: FDUSD listing and BUSD migration, June 2023 through February 2024.
- DeFiLlama and Token Terminal historical supply / venue data for FDUSD, 2023-06 through current.
- Hong Kong Companies Registry filings for First Digital Trust Limited.
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