Mantle has expanded its real-world asset yield enterprise into DeFi with a non-custodial stablecoin vault after its Bybit-based product crossed $200 million in property below administration.
Abstract
- $200 million was held within the earlier Mantle Vault product supplied by Bybit.
- USDC and USDT0 depositors can entry sUSDS-based yield with out utilizing leverage.
- CIAN designed the technique, Grove provides the yield supply, and Fluxion supplies entry.
- Mantle’s launch supplies checklist a goal APY of up to 6.5% alongside token and level incentives.
In accordance to Mantle’s Aug. 25 X thread, the brand new product is obtainable by Fluxion and combines infrastructure from CIAN and Grove to give stablecoin holders direct entry to an onchain yield technique.
The launch takes a product beforehand distributed by the centralized alternate Bybit and locations a associated model inside Mantle’s DeFi community. Customers deposit USDC or USDT0 by Fluxion whereas conserving management of their property, eradicating the necessity to hand funds to a centralized custodian.
Mantle mentioned the vault makes use of a conservative, non-leveraged construction created by CIAN, the identical protocol that helped construct the unique Bybit product. Grove connects the vault to yield generated by the Sky ecosystem, whereas Fluxion manages the interface by which customers enter the technique.
Mantle Vault makes use of sUSDS as its yield supply
Deposited stablecoins acquire publicity to the yield earned by sUSDS, the financial savings model of Sky’s USDS stablecoin. Sky units the relevant financial savings price by governance, which means the underlying return can change fairly than remaining mounted for the lifetime of a deposit.
Mantle described Grove’s function as connecting the vault to Sky’s Financial savings Charge and a set of governance-approved methods. Grove operates inside the Sky ecosystem and routes USDS liquidity into credit score methods by non-custodial vault infrastructure.
“Grove connects the vault to Sky’s Financial savings Charge, offering stablecoin deposits publicity to yield generated from diversified, governance-approved methods,” Mantle mentioned.
An Aug. 6 RWA deposit report from crypto.information discovered that sUSDS provide stood at 4.61 billion whereas its financial savings price was 3.52% on the time of evaluation. Sky states that governance can change the speed, so depositors shouldn’t deal with both the underlying return or the vault’s marketed APY as everlasting.
Mantle’s launch supplies checklist a goal APY of up to 6.5%. The marketing campaign additionally contains Fluxion Factors and 5.14 million GROVE tokens, including promotional rewards above the return generated by the underlying technique. Neither the factors nor the token allocation represents a hard and fast money return, and the worth acquired by every depositor can rely on marketing campaign guidelines, participation, and token costs.
CIAN packages the technique contained in the vault, permitting its positions and transactions to stay seen onchain. Mantle mentioned the product doesn’t use leverage, limiting one supply of liquidation threat, although customers stay uncovered to smart-contract failures, stablecoin value actions, liquidity situations and modifications to Sky’s governance-set price.
The DeFi vault modifications how customers entry the technique
On Bybit, prospects may enter Mantle Vault by the alternate with out immediately managing the technique onchain. Bybit, Mantle and CIAN launched that model in December 2025, permitting customers to deposit USDC or USDT by Bybit Earn whereas the property moved into Mantle-based yield methods.
The product later handed $200 million in property below administration. In its newest announcement, Mantle described the quantity as proof that the CeFi distribution mannequin had attracted deposits earlier than the workforce launched a self-custodial route.
By Fluxion, customers now work together with good contracts fairly than counting on an alternate account to maintain and deploy their stablecoins. Mantle summarized the distinction by saying CIAN used the identical sort of development for the brand new product, “besides now, you retain your keys.”
Self-custody modifications the social gathering accountable for controlling the pockets however doesn’t take away the dangers hooked up to the underlying protocols. Depositors should handle their very own keys and approve the required smart-contract transactions, whereas the technique nonetheless is determined by CIAN’s vault design, Fluxion’s interface, Grove’s infrastructure and Sky’s financial savings system.
The launch presently identifies USDC and USDT0 because the supported deposit property. USDT0 is an omnichain model of Tether’s greenback token designed to transfer between supported networks, making it totally different from depositing customary USDT immediately into the vault.
Mantle’s RWA exercise has grown throughout 2026
The DeFi product follows a rise in tokenized property and stablecoin liquidity throughout Mantle. In recent Mantle coverage, Nansen information confirmed that the community’s complete DeFi worth locked had exceeded $1 billion after rising 230% throughout the first half of 2026.
The identical report positioned RWA-focused DeFi TVL above $90 million and Mantle Vault property above $200 million. Mantle’s stablecoin market capitalization reached $955 million, representing 120% year-over-year progress, in accordance to Nansen.
Earlier figures provided with the newest launch positioned Mantle’s RWA TVL at $257 million, up from $22 million throughout the yr, whereas complete DeFi TVL exceeded $755 million. Variations between the figures may end up from measurement dates and from the classes included by particular person information suppliers.
Mantle has additionally added tokenized fairness merchandise to its community. Nansen counted 155 tokenized equities on the finish of June, in contrast with 10 in April, together with devices linked to SpaceX and Franklin Templeton’s U.S. Fairness Index ETF.
Tokenized merchandise that observe corporations or funds don’t robotically present direct possession, voting rights, or different protections hooked up to the underlying safety. Eligibility additionally is determined by the issuer, distributor, and jurisdiction, even when a blockchain product can technically be reached from any location.
U.S. guidelines depart stablecoin yield below scrutiny
For American customers, the vault’s availability is determined by Fluxion’s phrases, pockets restrictions, and relevant federal and state guidelines. Mantle’s assertion about entry with out geographical limits doesn’t set up that each product or incentive can legally be supplied to each U.S. resident.
The excellence between stablecoin issuer funds and returns earned by an exterior DeFi technique can also be related in america. The GENIUS Act prevents cost stablecoin issuers from immediately paying curiosity or yield to holders, whereas reward preparations supplied by exchanges, brokers, and DeFi platforms have remained a part of the congressional debate.
Citigroup CEO Jane Fraser mentioned in August that third-party stablecoin rewards may draw deposits away from banks, in accordance to a report on the stablecoin rewards debate. Banking teams have asked Congress to restrict such programs, whereas crypto corporations have argued that externally generated returns differ from curiosity paid by a cost stablecoin issuer.
The newest CLARITY Act language would prohibit passive yield on stablecoin balances whereas permitting sure activity-based rewards related to funds, transfers or platform use. Mantle and its companions have described the brand new vault’s return as strategy-generated yield from sUSDS, with Fluxion Factors and GROVE tokens added as separate incentives.
