Tokenized Fund

What Is a Tokenized Fund?

A tokenized fund is an investment fund whose shares are represented as digital tokens on a blockchain. The underlying assets (Treasury bills, government bonds, money market instruments) are managed off-chain by licensed custodians and regulated fund managers, while the ownership layer moves on-chain. Each token tracks the fund's net asset value (NAV), giving holders the same economic exposure as traditional fund shares but with the settlement speed and composability of a blockchain token.

The concept bridges traditional asset management and decentralized finance. Rather than replacing the fund structure, tokenization wraps it in a programmable container. The fund manager still handles portfolio allocation, compliance reporting, and custody. What changes is how investors hold, transfer, and interact with their shares: instead of waiting days for settlement through transfer agents and clearinghouses, tokenized shares move peer-to-peer in seconds.

As of mid-2026, tokenized Treasury and money market products represent over $16 billion in on-chain assets, with the broader tokenized RWA market exceeding $33 billion. Major players include BlackRock, Franklin Templeton, Ondo Finance, and Apollo.

How It Works

Tokenized funds operate through a layered architecture that separates asset management from token mechanics:

1. A fund manager creates a regulated investment vehicle (limited partnership, money market fund, or similar structure) and invests in target assets like tokenized Treasuries or short-duration government securities
2. A transfer agent (such as Securitize) issues blockchain tokens that represent shares in the fund, typically targeting a stable per-token NAV (for example, $1.00 per token for money market funds)
3. Investors subscribe by sending USD or stablecoins, receiving tokens that reflect their proportional ownership
4. Yield accrues to token holders through either a rebase mechanism (increasing token quantity) or an accumulating mechanism (increasing token price)
5. Redemptions burn tokens and return the underlying value to investors, either same-day or within the fund's stated redemption window

NAV Tracking

The token's price must accurately reflect the fund's net asset value. Two primary approaches exist:

• Rebase tokens: the token price stays fixed (typically $1.00) while yield is distributed by minting additional tokens to holder wallets daily. BlackRock's BUIDL uses this model.
• Accumulating tokens: the token price increases over time as yield accrues. Ondo Finance's OUSG uses this model, where the token price tracks the NAV of the underlying portfolio.

In both cases, an authorized oracle or the fund's transfer agent updates the on-chain NAV at regular intervals, ensuring the token price reflects the current value of the underlying assets.

Smart Contract Compliance

Unlike permissionless ERC-20 tokens, tokenized fund shares enforce investor eligibility at the contract level. Standards like ERC-3643 (T-REX) build compliance rules directly into the token:

// ERC-3643 transfer restriction (simplified)
function canTransfer(address _to, uint256 _value)
  external view returns (bool) {
    // Check recipient is KYC-verified
    require(identityRegistry.isVerified(_to));
    // Check transfer complies with jurisdictional rules
    require(compliance.canTransfer(msg.sender, _to, _value));
    return true;
}

Every transfer is validated against a whitelist of KYC/AML-verified addresses. If a recipient is not on the whitelist, the transfer reverts. This enforcement layer satisfies regulatory requirements while preserving the benefits of on-chain settlement.

Major Tokenized Funds

BlackRock BUIDL

The BlackRock USD Institutional Digital Liquidity Fund (BUIDL) launched in March 2024 on Ethereum, tokenized by Securitize as transfer agent. It invests in short-duration US government securities, repos, and cash. Each BUIDL token targets a $1.00 NAV with yield accruing daily via rebase.

BUIDL has grown to over $2.87 billion in assets across eight blockchains: Ethereum, Aptos, Arbitrum, Avalanche, Optimism, Polygon, Solana, and BNB Chain. The minimum subscription is $5 million, restricted to qualified purchasers. Its 7-day APY was approximately 3.40% as of mid-2026.

Franklin Templeton FOBXX (BENJI)

The Franklin OnChain U.S. Government Money Fund (FOBXX) is the first SEC-registered mutual fund to use a public blockchain for transaction processing and share recording. BENJI is the on-chain token representing fund shares. Unlike BUIDL, FOBXX is a registered 40 Act fund, opening it to a broader investor base rather than only qualified purchasers.

FOBXX holds approximately $720 million in net assets and is deployed across nine public chains including Stellar, Polygon, Arbitrum, Avalanche, Ethereum, and Solana. Its management fee of 0.15% is among the lowest for tokenized money market funds.

Ondo Finance OUSG

Ondo Short-Term US Government Bond Fund (OUSG) is a permissioned ERC-20 token representing fractional ownership in a fund holding short-duration US Treasury exposure. Issued by a Delaware limited partnership under Regulation D (506(c)), OUSG restructured in late 2024 to hold BlackRock's BUIDL as its primary underlying asset.

OUSG uses an accumulating yield model where the token price rises to track NAV rather than rebasing. It holds approximately $320 million in assets as of late 2026, with a minimum subscription of $100,000 for standard mints.

Use Cases

Institutional Cash Management

Treasury managers can park idle cash in tokenized money market funds and earn yield while maintaining instant liquidity. Unlike traditional money market funds that settle T+1 or later, tokenized fund shares can be redeemed and converted to stablecoins within minutes. This eliminates the opportunity cost of capital sitting idle during settlement windows.

DeFi Collateral

Tokenized fund shares function as yield-bearing collateral in DeFi lending protocols. A holder can deposit BUIDL tokens as collateral to borrow stablecoins while the collateral continues earning Treasury yield. This creates a capital-efficient loop: the collateral earns approximately 3-4% while backing a loan, compared to idle stablecoin collateral earning nothing.

Cross-Border Settlement

Tokenized funds eliminate the friction of cross-border securities settlement. An investor in Singapore and a counterparty in London can trade tokenized fund shares peer-to-peer on-chain without involving correspondent banks, clearinghouses, or multiple intermediaries. The atomic settlement guarantee means both sides of the trade complete simultaneously or not at all, eliminating counterparty risk.

24/7 Portfolio Rebalancing

Traditional fund shares can only be traded during market hours. Tokenized fund shares trade on-chain around the clock, enabling automated portfolio rebalancing strategies, margin calls, and liquidations that do not need to wait for the next business day.

Regulatory Framework

Tokenized funds in the United States typically rely on one of two regulatory paths:

• Private placement under Regulation D: most tokenized funds (BUIDL, OUSG) use Rule 506(b) or 506(c) to exempt the offering from SEC registration. Under 506(c), general solicitation is permitted but issuers must verify accredited investor status. Many funds further restrict to qualified purchasers under Section 3(c)(7) of the Investment Company Act, requiring $5 million or more in investments for individuals.
• Registered fund structure: Franklin Templeton's FOBXX is registered under the Investment Company Act of 1940 (40 Act), making it accessible to a broader investor base without the qualified purchaser restriction.

In both cases, KYC and AML compliance is enforced at the smart contract level. Only addresses that have passed identity verification and been added to the token's whitelist can hold or receive tokens. This programmable compliance model automates what traditionally required manual checks by transfer agents.

Tokenized Funds vs. Traditional Funds

Risks and Considerations

Smart Contract Risk

Tokenized fund shares depend on smart contract code for issuance, transfers, and compliance enforcement. A vulnerability in the contract could allow unauthorized transfers, bypass compliance checks, or freeze funds. While smart contract audits mitigate this risk, they cannot eliminate it entirely. The ERC-3643 standard has been widely audited and adopted across $32 billion in tokenized assets, but novel implementations may introduce new attack surfaces.

Regulatory Uncertainty

The regulatory landscape for tokenized securities continues to evolve. While the SEC has accommodated tokenized funds through existing exemptions (Reg D, 40 Act registration), future rulemaking could impose new requirements on token transfers, custody, or reporting. Cross-border regulatory fragmentation adds complexity: a tokenized fund compliant in the US may not be transferable to wallets in jurisdictions with different securities laws.

Liquidity Constraints

Although tokenized fund shares can technically trade 24/7, actual liquidity depends on the fund's redemption mechanism and the depth of secondary markets. Many tokenized funds restrict transfers to whitelisted addresses, limiting the pool of potential buyers. Redemptions may still require waiting for the fund to liquidate underlying positions, especially for funds holding less liquid assets like private credit.

Oracle and NAV Risk

The accuracy of on-chain NAV depends on the oracle or transfer agent responsible for price updates. A stale or manipulated NAV feed could cause tokens to trade at prices disconnected from the value of the underlying assets. Funds mitigate this through multiple data sources and update frequencies, but the risk of temporary mispricing remains.

Custodial Risk

The underlying assets remain in the custody of traditional financial institutions. Token holders depend on the fund manager, qualified custodian, and transfer agent to properly manage and safeguard the portfolio. Tokenization adds a layer of transparency through on-chain share tracking, but it does not eliminate the fundamental counterparty risk inherent in delegated asset management.

Why It Matters

Tokenized funds represent one of the fastest-growing segments of the RWA tokenization movement. By bringing regulated investment products on-chain, they create a bridge between institutional capital and decentralized infrastructure. The ability to use Treasury-backed fund shares as composable DeFi collateral, settle trades atomically, and access yield-bearing instruments around the clock is reshaping how capital markets operate.

For the broader Bitcoin and stablecoin ecosystem, tokenized funds provide a critical building block. Stablecoin issuers like USDB can hold tokenized Treasury funds in their reserves, earning yield while maintaining transparency through on-chain verification. As settlement infrastructure matures, the line between traditional fund shares and on-chain tokens will continue to blur, with tokenized funds serving as the bridge. For a deeper exploration of how tokenized fund shares improve settlement, see tokenized fund shares and settlement efficiency. For background on the broader landscape, see tokenized money market fund landscape.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.