Nexus Mutual
Other · Underwriting · wNXM
Nexus Mutual is a mutual where members pool capital to underwrite smart-contract and protocol risks. Claims are assessed by member vote; NXM (wrapped as wNXM for trading) governs the mutual and backs the capital pool.
Member-owned decentralized cover for smart-contract risk.
wNXM price
$46.83
+1.5% 24h
Latest data · 15 min delay
Research
Components, facts, FAQ, timeline, and tokenomics in one place
Main components (5)
Capital Pool
A shared, member-owned pool of crypto assets (ETH, DAI, stETH and other tokens) that backs the NXM token, underwrites all active cover, and is the reserve from which valid claims are paid. Its size relative to the Minimum Capital Requirement (MCR) determines how much cover the mutual can sell.
Cover Products
On-chain cover policies members purchase to protect DeFi positions. The mutual offers 100+ products spanning protocol/smart-contract cover, yield-token cover, custody (centralized exchange) cover, slashing and other crypto-native and real-world risks. Premiums are paid in ETH or DAI and priced by the underwriting staking pools.
Staking Pools (V2)
Introduced in V2, staking pools let expert managers deposit and manage NXM as underwriting capital, choose which cover products to open capacity for, and set risk-based pricing. Passive members can delegate NXM to a pool and earn NXM rewards as cover is sold from it.
RAMM (Ratcheting AMM)
A two-pool automated market maker sitting on top of the Capital Pool that lets members mint NXM (contributing ETH in the 'above' pool) or redeem NXM for ETH (burning it in the 'below' pool). A ratchet mechanism nudges the price toward Book Value during inactive periods. It replaced the original bonding-curve mint/burn model in the V2 tokenomics upgrade.
Claims Assessment
The member-governed process for adjudicating claims. Members stake NXM to vote on whether a submitted claim meets the cover wording; approved claims are paid from the Capital Pool. Claims can be submitted after a waiting period following a loss event and within a defined window after cover expiry.
Differentiator
The longest-running on-chain mutual model with claims-assessed cover rather than parametric triggers — members vote on whether a loss event qualifies.
Organizational structure
Units & roles
- Member-owned mutual / DAO
Nexus Mutual (DAO)
NXM token holders collectively own the Capital Pool and all surplus generated from cover sales, and govern the protocol (pricing, products, parameters, claims) through on-chain voting.
- Discretionary mutual legal entity
Nexus Mutual Ltd (UK legal wrapper)
A UK-registered discretionary mutual that wraps the DAO. It has a Board with deliberately limited powers; members can replace Board members at any time. Founded by Hugh Karp, who launched the protocol on Ethereum mainnet in 2019.
Investment rounds
| Date | Round | Amount | Investors | Link |
|---|---|---|---|---|
| 2018-04-04 | Seed | ~$259K | KR1Blockchain Coinvestors | Source |
Similarity to traditional finance products
How Nexus Mutual maps onto established TradFi structures, and where it diverges.
| TradFi product | Similarity to Nexus Mutual | Key differences |
|---|---|---|
| Mutual insurance company / P&O-style mutual | Like a traditional mutual insurer, the members are the owners: they pool capital, share risk, keep any underwriting surplus, and collectively decide on claims rather than paying a shareholder-owned carrier. | Cover is discretionary (payouts voted by members under cover wording, not a legally binding insurance contract), it is unregulated as insurance, capital is on-chain crypto, and underwriting/claims are executed by smart contracts and token-holder governance. |
| Lloyd's-style syndicated underwriting | V2 staking pools resemble Lloyd's syndicates: specialist underwriters bring capital, pick which risks to back, and price them, while passive capital providers can back the underwriters. | Anyone can spin up a staking pool permissionlessly, capital is NXM staked on-chain, and there is no regulated managing-agent structure or legally binding policy. |
Data sources
- Nexus Mutual Documentation - Capital Pool
- Nexus Mutual Documentation - Token Model (RAMM)
- Nexus Mutual Documentation - Audits and Security
- Nexus Mutual blog - V2 Live on Ethereum Mainnet
- Nexus Mutual - Paying claims for the Yearn hack
- Nexus Mutual Documentation - bZx hack claims history
- Crunchbase - Nexus Mutual seed round