Chainlink unlocks DeFi lending for Coinbase tokenized stocks

Chainlink has introduced price feeds for four Coinbase tokenized stocks on Base, giving DeFi protocols the data needed to assess NVDAc, METAc, AAPLc, and GOOGLc as collateral.

Chainlink feeds support tokenized stock collateral

Chainlink said in an Aug. 26 X announcement that its Data Feeds allow DeFi protocols to integrate Coinbase Tokenized Stocks as collateral, extending their use beyond holding and secondary-market trading.

The first supported assets represent Nvidia, Meta, Apple, and Alphabet shares under the tickers NVDAc, METAc, AAPLc, and GOOGLc. Coinbase issued the products on Base using B20, a token standard developed for tokenized real-world assets.

According to Chainlink’s documentation, each feed reports the total return value of the corresponding B20 token. The calculation combines the underlying stock’s market price with a multiplier taken from Coinbase’s onchain oracle registry.

Corporate events can change how much underlying equity one token represents over time. Coinbase’s prospectuses state that dividends are generally reinvested in additional shares after fees and applicable U.S. withholding taxes, causing the deposit ratio to adjust. Chainlink’s multiplier allows its reported value to account for such changes rather than tracking only the quoted share price.

Applications read the values through Chainlink’s standard V3 aggregator interface, which is also used by many crypto price feeds. Because each B20 asset is identified by its contract address, Chainlink advises developers to verify addresses instead of relying only on ticker symbols, which can be copied by unrelated token issuers.

For lending markets, the resulting valuation can help determine how much a borrower may receive against deposited stock tokens. Protocols can also use updated prices to measure loan health and decide when collateral must be liquidated, although each application remains responsible for setting its own risk limits.

Coinbase tokenized stocks gain lending utility on Base

Coinbase launched four stocks on Base on Aug. 24, crypto.news previously reported, bringing one-to-one-backed exposure to Apple, Nvidia, Meta and Alphabet into self-custodial wallets.

Coinbase Onchain SPV Ltd., a company incorporated in the Abu Dhabi Global Market, issues the securities under prospectuses approved by the market’s Financial Services Regulatory Authority. For each token initially created, the issuer holds a corresponding share through a segregated custody account.

The offering documents name Alpaca Securities as the broker and custodian that buys, sells, and holds the represented equities. Alpaca is registered with the U.S. Securities and Exchange Commission as a broker-dealer and belongs to the Financial Industry Regulatory Authority and Securities Investor Protection Corporation.

Under the prospectus structure, tokenholders receive a beneficial interest in custodied shares rather than becoming the registered owners on the books of Apple, Nvidia, Meta, or Alphabet. Verified holders may submit voting instructions, but the issuer’s ability to act on them remains subject to legal, timing and operational limits.

Adding collateral support gives eligible holders another possible use for the tokens. Instead of selling a position to obtain funds, a holder could deposit an accepted B20 asset into a lending market and borrow another asset against its value, subject to the protocol’s collateral ratio, liquidity requirements and user-access rules.

Base has listed Aave, Morpho, and Euler among the protocols providing or preparing lending functions for B20 assets. Aerodrome supports tokenized-stock liquidity, while 0x, 1inch, KyberSwap and CoW Swap provide trading infrastructure. Support from a service provider does not mean every stock token is automatically available in every application, as individual protocols decide which markets to activate and under what conditions.

Equity trading hours create extra oracle risks

Although Base operates continuously, the U.S. shares supporting Coinbase’s tokens follow established equity-market sessions. Chainlink’s equity feeds provide 24-hour coverage from Monday through Friday by combining regular-session, extended-hours, and overnight-market data.

According to Chainlink, data quality and provider coverage vary across those sessions. Regular U.S. trading hours carry the strongest coverage, while overnight markets draw from fewer providers and usually update less often. During weekends, when the underlying equity markets are closed, the reported valuation may remain unchanged.

Chainlink also uses session-aware smoothing during transitions between trading periods. Its documentation warns that smoothing can reduce brief price spikes caused by thin liquidity but may cause the reported value to lag during rapid market moves.

Developers must therefore assess whether each feed fits the intended collateral market, Chainlink said. The company recommends setting suitable safeguards and checking Base’s layer-2 sequencer status before protocols rely on a valuation for borrowing or liquidation.

A separate Ethereum proposal published on Aug. 24 has addressed a related problem. The proposed asset status interface would let smart contracts distinguish a scheduled market closure from a failed data feed, a trading halt, or an unavailable redemption process.

Such distinctions matter for lending applications because an old price does not always signal a technical problem. Under the proposal, a protocol could continue operating during an expected exchange closure while applying different controls when an oracle fails or the represented stock is halted.

U.S. investors remain excluded from the B20 offering

Despite representing shares listed on U.S. exchanges, Coinbase Tokenized Stocks are not currently offered to U.S. persons. The securities have not been registered under the Securities Act of 1933 or with state securities regulators, according to the offering documents.

Coinbase uses Regulation S, which provides an exemption for qualifying securities transactions conducted outside the United States. The prospectuses prohibit offering, selling, or delivering the tokens in the country or for the account or benefit of a U.S. person.

American customers can use Coinbase’s separate brokerage service to buy conventional stocks and exchange-traded funds. Apex Clearing handles execution, clearing, and custody for that service, which operates independently of the ADGM-issued B20 securities available through Base.

Coinbase received Abu Dhabi approval earlier in August to arrange investment deals and provide custody services related to tokenized securities. The authorization does not allow the company to distribute the ADGM-issued products in the United States, where any domestic tokenized-stock offering would remain subject to U.S. securities laws and SEC oversight.

Access restrictions also apply to services built around the stock tokens. Bitwise, for example, has introduced three portfolios that use Coinbase’s assets inside self-custodial wallets, but its Automated Token Portfolios remain unavailable to U.S. persons.

Verified B20 holders may request redemption in the underlying stock, U.S. dollars, or an accepted stablecoin such as USDC, according to Coinbase’s prospectuses. The issuer charges a 0.05% redemption fee and may require identity, sanctions, anti-money laundering, and jurisdiction checks before processing a request.

Holders who acquire the tokens through DeFi without completing Coinbase’s compliance process remain unvested until they pass the required checks. Coinbase’s filings state that unvested holders cannot redeem tokens for shares or cash, receive certain holder rights, or submit voting instructions.