How On-Chain Fund Ownership Works: Shares, NAV, and Cost Basis
Control and ownership are different things, and on-chain funds separate them deliberately. The fund admin controls the strategy. Members own the capital behind it. What makes that separation real rather than rhetorical is the accounting: shares minted against net asset value, a cost basis tracked per member, and contracts that the admin cannot override. This explains the mechanics — what a share represents, what moves your ownership, and how fees land when you leave.
Control and ownership are not the same
A fund admin decides how capital meets the market: what to trade, when, at what size, and which assets to hold. That is control, and it is genuine — members cannot direct it.
What the admin cannot do is change who owns what. Share balances, the minting and burning of shares, and the settlement of withdrawals are handled by contracts. An admin cannot alter a member's share balance, transfer someone's shares, change the fund's carry rate after launch, or require their own approval before a member withdraws.
An admin can invest in their own fund and hold shares like anyone else. Their role grants strategy authority; their shares determine economic ownership. The two are tracked separately because they are separate things.
What actually changes your ownership
The distinction that confuses people most is between ownership percentage and ownership value. They move independently, and only one of them matters to what you are owed.
When the fund gains or loses value, your share balance and percentage are unchanged; your position value moves with NAV. When another member deposits, your percentage falls but your position value does not — the fund grew by exactly what they added. When another member withdraws, your percentage rises and your value again stays put.
Only your own actions change your share balance. Adding capital mints new shares to you and increases both your percentage and your value. Withdrawing burns shares and reduces both.
So a falling ownership percentage is not dilution in the sense that matters. Nothing was taken from your position. The denominator grew.
Cost basis, and why carry works the way it does
The fund tracks a cost basis for the capital you still have invested. An accepted investment establishes it, further deposits increase it, and a withdrawal consumes the portion attached to the shares you redeem.
When shares are redeemed, the contracts compare their gross value against the cost basis attached to them. Realised profit is the difference, and performance carry applies only when that difference is positive.
This is a meaningfully better deal than the industry norm, and it is worth being explicit about why. Carry is not charged on your principal. It is not charged on unrealised gains, so the admin does not earn on a position that later gives the profit back. It is not charged on assets under management, so an admin cannot earn simply by holding your capital. They earn when you actually realise a profit, and not otherwise.
The rate is set between 0% and 30% when the fund launches and is fixed from that point. It cannot be raised on you later.
Leaving a fund
There is no lockup. A member can withdraw part of a position or exit entirely without the admin's approval, and settlement runs on-chain around the clock.
A partial withdrawal burns the shares attached to the portion redeemed and leaves you a member with a smaller position. A full exit burns your entire balance and ends the membership.
Two costs apply at the exit, and they are separate. Performance carry, if any, applies to realised profit above your cost basis. Rayze's 1% platform fee applies to the gross value leaving the fund, whether or not you made money. Worth planning around: on a position that is flat or down, you still pay the 1%.
What on-chain accounting does not fix
Every share mint, burn, deposit, withdrawal, and exit settles through contracts on Arbitrum, which produces a permanent and checkable record of how ownership entered, changed, and left the fund. You do not have to trust a statement about your position; you can verify it.
That is a real improvement over a quarterly letter, and it is not the same as safety. Shares lose value when the fund's positions lose value. Smart contracts, bridges, oracles, and integrated venues each carry their own risk. Non-custodial design means no intermediary will reverse a loss on your behalf.
Verifiable accounting tells you precisely what you own. It makes no promise about what it will be worth.
Frequently asked questions
- What does a fund share represent?
- A claim on the fund's net asset value. Your ownership is your shares divided by total shares outstanding, and your position value is that percentage multiplied by NAV. Shares are non-transferable — they cannot be sold or traded on a secondary market — so their value comes from the fund's assets and positions rather than from speculation.
- How is fund NAV calculated?
- Fund NAV is the value of the primary vault plus the equity in the fund's trading account. The vault holds USDC and supported spot assets on Arbitrum; the trading account holds perpetual collateral, open positions, and trading PnL. Moving capital between them changes allocation, not ownership.
- Does my ownership get diluted when someone else invests?
- Your percentage falls, but your position value does not. New shares are minted against the capital the new member added, so the fund grew by exactly what they contributed. Nothing is taken from your position — the denominator simply got larger.
- When does performance carry apply?
- Only to realised profit above your cost basis, calculated when you withdraw or exit. It is not charged on principal, on unrealised gains, or on assets under management. The rate is set between 0% and 30% when the fund launches and is fixed from that point, so it cannot be raised later.
- What does it cost to withdraw from a fund?
- Rayze charges a 1% platform fee on the gross value leaving the fund, whether or not the position was profitable. Performance carry may also apply, but only to realised profit above your cost basis. The two are separate charges.
- Can a fund admin block my withdrawal or take my shares?
- No. Withdrawals and exits do not require admin approval, and there is no lockup period. An admin cannot change a member's share balance, transfer their shares, or alter the fund's carry rate after launch. Those actions are handled by contracts rather than by the admin.
Ownership you can verify
Every mint, burn, and settlement is recorded on-chain, so what you own is checkable rather than reported to you.
Rayze is a non-custodial technology provider — not a broker-dealer, investment adviser, or financial intermediary. Nothing on this page is financial, investment, tax, or legal advice. All investing involves risk, including loss of principal, and leverage increases that risk. Past performance does not predict future results. Users are solely responsible for their own investment decisions.