Liquidity providers deposit funds into Mummy Finance and receive trading fees from traders (supply-side fees).

Mummy Finance is a non-custodial exchange for spot and perpetual contracts built on Fantom, Optimism, and Arbitrum. Mummy Finance was founded by an anonymous team and was launched in December 2022.

MMY tokenholders own and govern the protocol. They currently take a cut of the total trading fees paid by traders (revenue).

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Derivative exchanges

Mummy Finance

# Mummy Finance Notional trading volume Methodology

## 1. Overview

Mummy notional trading volume measures the total USD value of all trading activity on the Mummy protocol, combining both perpetual derivatives trading and spot trading. This metric captures the full scope of trading activity by summing position changes in derivatives markets (including liquidations) with spot token swaps. The calculation aggregates daily trading volumes across Arbitrum, Fantom, and Optimism chains, providing a comprehensive view of protocol trading activity.

## 2. Data sources

The calculation uses several types of blockchain and external data:

- **Mummy Vault contract events**: Parsed events from Mummy's Vault smart contracts deployed on Arbitrum, Fantom, and Optimism chains
- **Perpetual trading events**: `IncreasePosition`, `DecreasePosition`, and `LiquidatePosition` events containing position size changes and underlying token information
- **Spot trading events**: `Swap` events containing input/output token addresses and amounts for token exchanges
- **Token metadata**: Token symbol and decimal information for proper amount normalization
- **End-of-day price feeds**: USD price data for tokens to enable currency conversion for spot trades

## 3. Step-by-step calculation

### Component A: Perpetual trading volume

- **Purpose**: Captures notional trading volume from derivatives trading including position openings, closings, and liquidations
- **Logic**: Extracts trading events from Mummy Vault contracts across three chains. For `IncreasePosition` and `DecreasePosition` events, uses the `sizeDelta` field which represents the USD-denominated change in position notional value. For `LiquidatePosition` events, uses the `size` field representing the total liquidated position value. These values are stored with 30 decimal places precision and are already denominated in USD. The calculation takes absolute values of all amounts (since both increases and decreases represent trading activity), divides by 10^30 to normalize decimals, then sums by day and underlying token (`indexToken`)
- **Key fields**: `sizeDelta` for position changes, `size` for liquidations, `indexToken` for underlying asset identification, and event categorization into "Perpetual trading" or "Liquidations" business lines

### Component B: Spot trading volume  

- **Purpose**: Captures notional trading volume from spot token swaps within the protocol
- **Logic**: Processes `Swap` events containing input token (`tokenIn`), output token (`tokenOut`), input amount (`amountIn`), and output amount (`amountOut`). Joins with token metadata to obtain decimal precision and symbol information for both tokens. Creates standardized trading pair names by alphabetically ordering token symbols. Converts raw amounts to decimal-corrected values using each token's decimal precision. Applies USD pricing using end-of-day price feeds for both input and output tokens. To prevent price manipulation attacks, uses the lesser USD value between the input and output amounts for each swap. Aggregates by day and trading pair
- **Key fields**: `amountIn` and `amountOut` for swap quantities, `tokenIn` and `tokenOut` for asset identification, token `decimals` for normalization, and `price_usd` from price feeds for currency conversion

### Final aggregation

- **Combining components**: Uses UNION ALL to combine perpetual and spot trading volumes while maintaining distinct business line classifications (Perpetual trading, Liquidations, Spot trading)
- **Currency conversion**: Perpetual volumes are already in USD from the smart contract events. Spot volumes are converted to USD using end-of-day token prices, with manipulation protection through minimum value selection
- **Time aggregation**: All volumes are aggregated at daily boundaries using timestamp truncation, with transactions assigned to dates based on block timestamps
- **Final calculation**: The metric represents the sum of all daily USD-denominated trading activity, including both absolute position changes in perpetual markets and the lesser-valued side of spot token swaps, processed through the standard finalization macro with zero-filling for missing days and chain availability filtering

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Total USD value of derivative contracts executed on the protocol.

Mummy Finance

Notional trading volume

Notional trading volume

Competitive landscape

Chain breakdown