An institutional risk curator running vaults on top of Euler V2 — Monad has quietly become its single largest chain by TVL, growing roughly 5x in under two months.
K3 Capital doesn't run its own lending protocol. It's an institutional asset manager founded by Kiril Nikolov (Nexo's first employee) and Simeon Rusanov, CFA (formerly DeFi Lead and Head of Research at Nexo), operating since 2021, that designs and manages vaults built on top of existing lending primitives — mainly Euler V2 (its largest platform by self-reported TVL), also Morpho, Term Finance, Gearbox and others elsewhere. Depositors put a single asset into an ERC-4626-style vault; K3 sets the risk parameters (which collateral is allowed, which oracle to trust, loan-to-value limits, supply caps) and actively rebalances across strategies. The underlying protocol's code is what actually holds and lends the funds — K3's job is deciding where that capital goes. Beyond vault curation, K3 also built sBOLD, an ERC-4626 wrapper around Liquity v2's Stability Pools that reportedly captured close to half of all BOLD stablecoin deposits within a month of its launch, audited by ChainSecurity — evidence of genuine product-building capability beyond pure risk parameter-setting.
K3 has the longest track record of the curators active on Monad (since 2021) and the most diversified platform footprint, spanning Euler, Morpho, Term Finance and Gearbox rather than concentrating on one protocol. An independent academic study classifies its risk appetite as intermediate: its volatile-asset exposure reportedly fell from roughly 60% to 20% of its book across 2024-2025, moving toward a more diversified, RWA-and-T-bill-leaning posture over time. Where K3 is thinner than a peer like Steakhouse Financial is public risk-methodology documentation — there's no published, formal risk framework document the way Steakhouse maintains one, and K3's own vault-allocation logic hasn't been separately audited (only its sBOLD wrapper has a public audit). Its most distinctive trait among Monad's curators is legal assertiveness: threatening suit against a fellow DeFi protocol over depositor losses is not something any of the other five curators in this category did.
K3's confirmed Monad venue is Euler V2, via a named "K3 Capital Earn WMON" vault, though that one vault is far smaller than K3's total Monad footprint — meaning most of its Monad book sits in additional, unnamed Euler vaults not individually disclosed. Monad has become K3's largest single chain by TVL, having grown roughly 5x in under two months since its deployment there — a fast ramp on a chain that itself only launched in November 2025. Reported TVL figures for K3 overall vary sharply by source and date — from under $12M attributed to it on Morpho specifically up to $570M-plus in combined cross-platform figures — worth treating any single number as a point-in-time snapshot rather than a stable fact.
Depositors are exposed twice over: to Euler V2's own contract and oracle risk, and separately to K3's judgment as curator — a slow reaction to a depeg or a bad oracle can lose money even if Euler's code is flawless, the same class of risk implicated industry-wide in the November 2025 Stream Finance/xUSD incident (which K3 reportedly avoided and profited from, per the client-fund detail above). K3 doesn't publicly disclose the full composition of its Monad book beyond one small named vault, so depositors can't fully audit where their funds actually sit, and no formal, published risk-methodology document exists to evaluate K3's decision process against.
Note: No token. K3 earns via performance fees on curated vaults, not a governance token — there's no on-chain vote or stake that gives depositors leverage over K3's own decisions.
A risk curator is a separate entity — not part of the base protocol — that aggregates depositor funds into a vault and decides which isolated markets to allocate that capital into: which collateral, which oracle, how much loan-to-value to allow. The underlying protocol (Euler, Morpho) provides the lending mechanics and custody; curators like K3 make the risk-selection decisions on top and are structurally never able to withdraw user funds themselves.
Almost entirely through performance fees — a percentage of the yield generated for depositors, capped at 50% by both Euler and Morpho protocol rules, typically implemented well below that cap. K3 doesn't disclose one universal published rate; fees vary per vault.
No documented loss was found — the public record instead shows K3 avoided xUSD exposure entirely and, via a client fund it managed, reportedly profited roughly $250,000 during the crisis. It separately threatened legal action against Elixir, whose deUSD token depegged after lending to Stream, alleging Elixir misrepresented its own risk.
Sources: K3 Capital, K3 Capital — Morpho forum listing, K3 Capital H1 2025 recap, K3 Capital threatens legal action against Elixir — Bankless
Last reviewed 2026-07-08. More Monad research.
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