K3 Capital

This review rejects K3 Capital because it discloses nothing about the entity that operates it. K3 Capital curates vaults on Euler v2 and Morpho and runs sBOLD, its own Liquity v2 Stability Pool wrapper, holding roughly $393M across nine chains. No legal entity name, incorporation jurisdiction, team identity, or founder identity appears anywhere in K3’s own materials. This review also found no independent journalism or third-party coverage of K3 as a company in any source it could access. A curator holding hundreds of millions of dollars without disclosing who operates it does not qualify for institutional coverage. K3’s own marketing site actively blocks US visitors by location and redirects them to a notice that “no services are being offered to US residents.” Tracked TVL fell roughly 53%, from about $406M in November 2025 to about $190M in May 2026, before recovering to its current level. This review could find no cause in DefiLlama’s hacks database, rekt.news, or Euler’s own governance forum, so the material swing remains unexplained. Separately, a meaningful share of K3’s Monad TVL comes from vaults that Euler DAO sunset and handed to K3 as a “qualified curator” in April 2026. That governance decision gave no documented reason for its vetting judgment.

Review triggers: events that reopen the verdict
• A named legal entity, incorporation jurisdiction, and team identity are publicly disclosed
• The cause of the November 2025 to May 2026 TVL decline is identified and confirmed
• A documented, independent vetting rationale for K3’s qualified-curator status is published, whether by Euler DAO retroactively or another governance body
• On-chain KYC or allow-list enforcement, or its confirmed absence, is verified directly against the vault contracts rather than inferred from the marketing site

Confirmed 2026-09-25: 37 days quiet, TVL $512M (+16% in 30 days), no open item. Holds to 2027-09-26 while the watch stays quiet.

The research file

Mechanism

K3 runs ERC-4626 vaults on Euler v2 and Morpho. Confirmed live Euler v2 products are “K3 Capital Earn WETH” and “K3 Capital Earn AUSD” on Monad and “K3 Capital USDT0 Vault” on Plasma. K3 also runs its own product, sBOLD, which splits deposits among wstETH, wETH, and rETH Liquity v2 Stability Pools at a stated 60/30/10 weighting. K3 rebalances it every two weeks at its own discretion. ChainSecurity and Dedaub have audited sBOLD at the product level. K3’s own documentation states that sBOLD can halt deposits and withdrawals when unrealized post-liquidation collateral exceeds a set ceiling. It also states that rounding favors the vault rather than the depositor to protect solvency. These terms are disclosed, but they create a real liquidity gate rather than pure on-demand redemption.

No disclosed legal entity or team

K3’s marketing site footer says only “© K3 Capital,” and its Privacy Policy and Terms of Service links are dead. This review found no entity name, jurisdiction, founder, or team member identity anywhere in K3’s own materials. It also found no independent coverage of K3 as a company, whether in the press, research writeups, or third-party analysis, in any source it could reach. Every path on k3.capital, including the sitemap, redirects requests from the US to a placeholder stating that no services are offered to US residents. This is the one confirmed access restriction. The review could not verify whether the underlying vault contracts enforce any on-chain allow-list beyond that marketing-site location block.

The Euler DAO handover

On 2026-04-10, Euler DAO’s governance forum posted a proposal to sunset its own DAO-managed markets and vaults across eight chains. The proposal said that market operations were outside Euler’s core competency and that risk providers running competing vaults elsewhere faced conflicts of interest. It named K3 and AlphaGrowth as “qualified curator” firms. They inherited roughly 15 vaults that the DAO had previously run, including several Monad Earn vaults. The governance thread gives no documented reason for that vetting judgment and cites no prior K3 track record as its basis. That omission is a real gap in the one public decision that formally endorsed K3 as a curator.

The unexplained TVL swing

DefiLlama-tracked TVL fell from roughly $406M in November 2025 to roughly $190M by May 2026, a decline of about 53%, before recovering to the current roughly $393M. This review found no exploit, bad debt event, or depeg tied to K3 in DefiLlama’s hacks database, a direct rekt.news search, or the Euler governance forum. The Euler sunset event occurred after most of the decline and covered only a small group of vaults, so it does not explain most of the swing. Some of the apparent movement may come from vault addresses being added to or removed from DefiLlama’s tracking setup rather than from real capital flows. But the review could not confirm either explanation, so it records the swing as an open, unexplained data point and does not claim a cause.

Comparison and decision

By current TVL, K3 ranks between smaller and larger established curators such as Re7 Labs and Gauntlet. Unlike either firm, which publish research, and unlike Gauntlet, which also discloses institutional backing, K3 discloses no team, entity, or jurisdiction. Its meaningful size, complete lack of operator disclosure, and recent handover from a DAO without documented vetting disqualify it from this registry, regardless of whether the underlying vault mechanics are technically sound.

Sources

The claims above trace to these. Where a number could not be independently verified, the thesis says so.

• K3 Capital — sBOLD documentation · primary · accessed 2026-08-19
  Supports: stability pool allocation weighting, discretionary rebalancing, withdrawal-halt mechanism, ChainSecurity and Dedaub audits
• DefiLlama — K3 Capital protocol data · secondary · accessed 2026-08-19
  Supports: TVL history and chain breakdown, listing date, unexplained TVL decline
• DefiLlama-Adapters GitHub — K3 adapter source · primary · accessed 2026-08-19
  Supports: vault attribution methodology, Euler and Morpho vault configuration
• Euler governance forum — sunsetting of DAO-managed markets and vaults · primary · accessed 2026-08-19
  Supports: April 2026 DAO vault handover to K3 as qualified curator, no documented vetting rationale
• K3 Capital — marketing site geo-block notice · primary · accessed 2026-08-19
  Supports: US-person access restriction on marketing site

Inherited controls

The research above describes the protocol layer. Every position also inherits the asset it holds and the chain it settles on. The layer with the most administrative power sets the position’s effective control; that describes control, not quality or suitability.