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Fee Structure

V2 charges position commissions separately from streamia (streaming premium) and borrow interest. The pool's RiskEngine supplies the fee configuration; use the engine-specific parameter tables for verified values.

Notional commission
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On mint, CollateralTracker calculates a notional commission on the sum of long and short amounts in that collateral token. It converts the commission to shares with contract-defined rounding.

Streamia commission
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When closing a position with realized streamia, the commission is capped at the smaller of:

  • the configured streamia rate applied to the absolute realized streamia;
  • ten times the configured notional rate applied to the closing long-plus-short notional.

A streamia-only settlement has no closing notional and uses the streamia-based commission without that cap. A streamia-fee constant is therefore not a complete quote for the final transaction cost.

Builder codes
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A valid nonzero builder code resolves to a deployed BuilderWallet. The protocol and builder receive the configured fractions of the commission in collateral shares; the remaining fraction is a user discount. Without a builder code, the commission is collected through share burning, benefiting collateral-vault shareholders.

Fee routing does not change ownership of the pool's RiskEngine. See CollateralTracker, BuilderFactory, and BuilderWallet for interfaces.

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