Plume wraps Fidelity's actively managed bond ETF in a vault that adds duration and credit risk onchain
Plume launched nBND, an onchain vault backed mainly by shares of FBND, Fidelity's $26.6 billion multi-sector bond ETF. It brings duration and credit risk to tokenized fixed income, though Plume has not said how many shares the vault holds.
The Investor · Invest desk
What happened
- FBND is actively managed, and its managers can move money among government bonds, investment-grade corporate debt, high-yield bonds and emerging-market securities.
- Plume cited tokenized U.S. Treasuries growing from $12 billion in April to $15 billion in June to argue for wider bond products onchain.
- Investors deposit stablecoins into the vault and receive a receipt token, tradable on Plume's own blockchain, that represents a claim on the vault's FBND shares.
- Plume and ether.fi formed a partnership in June 2026, and their Etherfi Liquid RWA vault launched with $25 million toward a projected $100 million.
Why it matters
- What doesn't add up contradiction Early coverage called nBND a tokenized $28 billion ETF. That figure is FBND's total assets, so any count of tokenized bonds that includes it overstates what has actually moved onchain.
- Who's exposed exposure Holders coming from tokenized bills take on FBND's rate and credit swings. Crypto Briefing adds the smart-contract and platform risk of the receipt layer.
- What it limits constraint The launch material does not make nBND holders registered FBND shareholders, so a buyer's claim on the bonds runs through Plume's vault and its ownership records.
- What it sets up precedent Because nBND wraps an existing fund, Plume can add products without managing a portfolio. It says more Fidelity assets are next.
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By Fidelity's count, FBND held $26.6 billion on June 30 [2]. That is about 1.8 times the $15 billion of tokenized Treasuries Plume cited for the same month [23]. Third-party data now put the fund nearer $28.2 billion [3].
Plume has not disclosed the vault's balance [11], so the only demand with a published size comes from the ether.fi vault. Its $25 million opening deployment would be about 0.09% of FBND even if every dollar sat in the fund [25]. Not every dollar does, because that vault also holds BlackRock's iShares AAA CLO ETF [21].
Plume is wrapping a fund it does not run (or rather, shares of one). The launch material ties nBND to an existing ETF instead of a newly built bond portfolio [10]. Fidelity's managers choose the bonds [6]. Plume supplies the token, and in October 2025 it obtained SEC transfer-agent registration, the role that keeps the official record of who owns a security [16]. Crypto Briefing gives the product's formal name as the Nest Fidelity Total Bond ETF Vault, or nFBND [7]. Crypto.news reports the name in Plume's announcement as nBND [1].
Bills and money-market funds went onchain first because their short maturities and simple structures suited blockchain distribution, according to Crypto.news [17]. Yin called them the "starting points" for onchain fixed income [14]. He said institutional investors "want duration, and active management" [13]. FBND has been an ETF since Oct. 6, 2014 and charges a 0.36% expense ratio [8]. Crypto Briefing put its yield at around 4.88% [26]. (Reports that credit FBND with a 20-year ETF record appear to confuse it with Fidelity's older Total Bond mutual fund, per Crypto.news [15].)
The launch could go one of three ways. Holders of tokenized Treasuries could add nBND as their duration position, and Plume would then have a balance worth publishing. nBND could instead end up mostly as an ingredient in mixed vaults like ether.fi's, sized in the tens of millions. Or rising rates could mark FBND down, and the first test would be whether the receipt token trades near the value of the shares behind it.
For now I expect the second. The one vehicle with a published size opened at $25 million [20]. FBND is also a U.S.-listed ETF [12], so an institution with a brokerage account can already hold it. The token's narrower advantage is a route from stablecoins into the fund that skips the brokerage account [9].
The case against my view is pace. Tokenized Treasuries added $3 billion in two months [24], and the holders of those balances are the obvious buyers for the duration Yin described. If Plume discloses an nBND balance above the ether.fi vault's $100 million target [20], I have this wrong.
What to watch
- Redemption terms for the nBND receipt token: how quickly, and in what asset, a holder can get stablecoins or FBND shares back.
- Whether Fidelity takes a named role in the further launches Plume says it plans to bring onchain.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence62
- Adoption5
- Hype gap+55
- Incentives55
- Confidence66
Perspective Coverage
4 publishers- Builder
- Builder 25%
- Operator
- Operator 29%
- Investor
- Investor 46%
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
Plume launched nBND, a tokenized vault backed primarily by shares of Fidelity Total Bond ETF (FBND), announcing it on Oct. 5.
- [2]
Fidelity's official ETF data showed FBND with $26.6 billion in assets as of June 30, 2026.
- [3]
More recent third-party fund data place FBND's total assets at approximately $28.2 billion.
- [4]
The launch material does not say that every nBND holder becomes a direct registered shareholder of FBND, and the structure should not be described as Fidelity placing the ETF itself onchain.
- [5]
Some early reports described the product as a tokenized $28 billion Fidelity ETF; the figure is FBND's assets, not capital deposited into nBND.
- [6]
FBND is actively managed; its managers can allocate capital across government securities, investment-grade corporate debt, high-yield bonds and emerging-market debt.
- [7]
The vault runs on Nest, Plume's protocol for packaging real-world assets into tokens, and is formally known as the Nest Fidelity Total Bond ETF Vault, also referenced as nFBND.
- [8]
Fidelity materials put FBND's inception date at Oct. 6, 2014 and its expense ratio at 0.36%.
- [9]
The vault issues a receipt token proving the holder's claim on the vault's FBND shares; the token trades on Plume's own blockchain, and Nest vaults accept stablecoin deposits so users need not route money through a brokerage account.
- [10]
Plume's announcement says FBND shares form the primary reserve asset behind nBND, tying the vault to an existing traditional investment product instead of a newly created bond portfolio.
- [11]
Plume did not disclose the amount of FBND shares deposited into nBND at launch or provide an initial total value locked figure for the vault.
- [12]
FBND is an actively managed Fidelity ETF listed in the U.S.
- [13]
Plume CEO Chris Yin said institutional investors "want duration, and active management".
- [14]
Yin said short-duration Treasuries and money-market equivalents were the "starting points" for onchain fixed income.
- [15]
Reports describing FBND as having a 20-year ETF track record appear to conflate it with Fidelity's older Total Bond mutual fund strategy.
- [16]
In October 2025 Plume obtained SEC transfer-agent registration; a transfer agent keeps the official record of who owns a security.
- [17]
Tokenized bond products have commonly centered on Treasury bills and money-market instruments because their shorter maturities and relatively simple structures made them early candidates for blockchain distribution.
- [18]
Plume plans to bring more Fidelity assets onchain after launching nBND.
- [19]
Plume cited growth in tokenized U.S. Treasuries from $12 billion in April to $15 billion in June as part of its case for expanding into other fixed income.
- [20]
Plume and ether.fi formed a partnership in June 2026 to build the Etherfi Liquid RWA vault, which launched with an initial deployment of $25 million and is projected to reach $100 million.
- [21]
The Etherfi Liquid RWA vault's holdings include allocations to BlackRock's iShares AAA CLO ETF alongside FBND.
- [22]
The receipt token adds a layer between investor and ETF, introducing smart contract and platform risk on top of bond market risk, and interest rate moves still affect FBND's value regardless of chain.
- [23]
FBND's June 30 assets were about 1.8 times the tokenized U.S. Treasury market Plume cited for June.
- [24]
Tokenized U.S. Treasuries grew by $3 billion between April and June, per Plume's figures.
- [25]
The ether.fi vault's $25 million initial deployment equals about 0.09% of FBND's $26.6 billion in assets.
- [26]
FBND offers a yield of around 4.88%.
Sources
4 independent publishers whose own reporting we read for this story.
- crypto.newsPlume opens onchain access to Fidelity’s $28B bond ETF
1 article · October 5, 2026
- cryptobriefing.comPlume launches nBND vault backed by Fidelity Total Bond ETF
2 articles · October 7, 2026
- fintech.globalPlume expands onchain fixed income with Fidelity-backed vault
1 article · October 5, 2026
- news.bitcoin.comPlume Opens Onchain Door to Fidelity’s $28B Bond Giant
1 article · October 5, 2026
Topics and entities
Topics
- Tokenized fixed income
- Tokenized Real-World Assets
Entities
- Kimber Transfer Agency
- Cynthia Lo Bessette
- Fidelity Total Bond ETF
- DefiLlama
- Fidelity Investments
- Plume