# Fomo Cross-chain Trading volume Methodology

## 1. Overview

Trading volume is defined as the total USD value of cross-chain trades executed through Fomo Cross-chain. This metric is utilized to assess the transaction activity, liquidity, and overall adoption of the cross-chain swap product. Fomo Cross-chain swaps are settled through Relay, an underlying cross-chain settlement protocol. By quantifying the volume of these transactions, the protocol's capacity to facilitate cross-chain asset transfers is evaluated.

## 2. Data sources

- **Blockchain events**: SPL token transfers on Solana, covering Solana
- **External data**: End-of-day price feeds for the USDC asset

## 3. Step-by-step calculation

### Component A: Cross-chain buy transfer tracking

- **Purpose**: Identify and extract USDC deposits representing cross-chain buy transactions.
- **Logic**: SPL token transfers of the USDC asset on Solana are parsed. Transactions are filtered to isolate those where the recipient is the Relay deposit vault account, the asset transferred is USDC, and the transaction signer is identified as a designated Fomo relayer account. These transfers are classified as buy transactions.
- **Key fields**: `block_timestamp`, `transaction_id`, `user_address`, and `amount`.

### Component B: Cross-chain sell transfer tracking

- **Purpose**: Identify and extract USDC transfers representing cross-chain sell transactions.
- **Logic**: SPL token transfers of the USDC asset on Solana are parsed where the sending authority is the Relay fill wallet account. To attribute these transfers to Fomo Cross-chain, the recipient account is matched against a historical list of Fomo user accounts. A recipient account is qualified if a prior fee-paying swap on Fomo Spot or a relayer-paid deposit on Fomo Cross-chain has been executed by that account on or before the day of the transfer. These qualified transfers are classified as sell transactions.
- **Key fields**: `block_timestamp`, `transaction_id`, `user_address`, and `amount`.

### Component C: USD conversion and aggregation

- **Purpose**: Normalize transaction amounts and convert them to USD.
- **Logic**: The transfer amounts from both buy and sell transactions are normalized by decimal precision. The normalized amounts are multiplied by the end-of-day price of the USDC asset to determine the USD trading volume. The daily trading volume is aggregated by summing the USD values across all transactions for each day.
- **Key fields**: `trading_volume`, `timestamp`.

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

Total value of spot trades executed on the exchange.

Trading volume

DEX aggregators

Fomo earns a fee on every trade placed through the app. On perpetuals it acts as a Hyperliquid builder: each order placed from the app carries Fomo's builder code, and Hyperliquid routes a 0.05% builder fee per side to Fomo's builder address at trade time, on top of the venue's own fee and any HIP-3 deployer share. On spot swaps Fomo charges a platform fee collected in its own fee wallets; on cross-chain swaps routed through Relay, Relay collects Fomo's app fee and settles it as USDC to Fomo's fee collector on Base.

Fomo offers perpetual contracts on crypto, US equities, pre-IPO companies, indices and commodities through Hyperliquid's native markets and HIP-3 markets such as trade.xyz, alongside spot trading of memecoins and other tokens. The app is available on iOS, Android and the web at fomo.family.

Fomo is a mobile-first social trading app built by FOMO Labs, Inc., founded in 2025 by former dYdX employees. It combines a social feed, leaderboards and copy trading with self-custodial, gasless token swaps on Solana, Robinhood Chain, Base, BNB Chain and Monad, and since June 2026 perpetual futures executed on Hyperliquid. Fomo is operated as a private company; no token has been issued.

Fomo Cross-chain

Trading volume

Trading volume

Chain breakdown