Plume Network unveiled the nFBND vault on October 5, 2026, issuing programmable onchain receipt tokens backed by shares of Fidelity's Total Bond ETF (FBND), a fund that managed approximately $26.6 billion as of June 30, 2026.

The launch deepens the link between a multi-billion-dollar traditional bond ETF and a blockchain-native vault structure, positioning the product as onchain infrastructure for actively managed fixed-income exposure rather than passive government-debt tracking.

How the nFBND vault actually works

Each nFBND token issued through Nest, Plume's asset-management protocol, represents a claim on FBND shares held in the vault. The ETF itself remains fully offchain. Plume acquires the shares through traditional brokerage channels, then mints the corresponding receipt token on its network.

The structure splits custody in two directions: traditional rails hold the underlying ETF shares, while onchain rails handle issuance, transfer, and composability. Investors receive a programmable wrapper without altering how Fidelity's fund is administered.

The underlying FBND carries a 0.36% expense ratio and spreads exposure across investment-grade debt, high-yield credit, and emerging-market sectors. Public estimates after the vault's launch placed the fund's total assets near $28 billion.

What did the issuers say about the rationale?

Plume CEO Chris Yin and Cynthia Lo Bessette, Fidelity's Head of Digital Asset Management, framed the launch as a response to demand for more dynamic fixed-income products onchain. Both executives cited active management and longer duration as the differentiators from existing tokenized offerings.

The pitch targets a gap left by current tokenization: shorter-duration U.S. Treasury products have dominated onchain yield vehicles through 2025 and 2026, while yield-curve positioning and credit selection have remained harder to replicate. A wrapper around an actively managed multi-sector bond fund aims directly at that gap.

How did launch demand materialize?

Early onchain activity was thin. Reports shortly after launch placed the vault's assets in the low single-digit millions. Other tracking feeds showed holdings below $100 in the immediate post-launch window.

Two operational dynamics likely explain the spread: latency between offchain share purchase and onchain minting during initial deployment, and divergence between pricing oracles used by independent analytics dashboards.

What regulatory frame supports the structure?

Plume has pursued SEC registration alongside licensing in Bermuda. The arrangement mirrors a path several tokenized-fund issuers have taken, anchoring issuance in Bermuda's regulated digital-asset framework while the underlying ETF sits inside the U.S. regulatory perimeter.

The dual-jurisdiction setup is becoming standard for tokenized U.S. funds, allowing 24/7 onchain settlement without transferring custody of the registered shares away from the U.S. broker channel.

What comes next?

The company has signaled plans to bring additional Fidelity products onchain, targeting the active bond investment market. Specific fund additions, ticker choices, and launch timing remain undisclosed.

The next operational milestone will be vault growth: whether nFBND moves from a single-digit-million starting position toward the scale required for institutional fixed-income desks to treat it as a working collateral or yield instrument, rather than a pilot deployment.