# Polymarket US Trading volume Methodology

## 1. Overview

Trading volume is defined as the total value of trades executed on Polymarket US. This metric is utilized to reflect the overall activity and liquidity of the prediction markets offered to users on the platform. Since trading volume is directly tied to market participation, it is considered a key indicator of user engagement and platform growth. For Polymarket US, trading volume is derived from off-chain transaction records and is denominated directly in USD.

## 2. Data sources

- **Off-chain data**: Time-and-sales transaction reports are ingested from the Polymarket US scraper, covering off-chain trading activity

## 3. Step-by-step calculation

### Component A: Polymarket US trade ingestion and filtering

- **Purpose**: Ingest and filter raw trade records to ensure data integrity
- **Logic**: Raw trade records are ingested from the scraper's time-and-sales reports. The latest successful loads are identified from the report files metadata to prevent duplicate processing. Trade details, including transaction time, symbol, price, and quantity, are extracted for further processing.
- **Key fields**: `transaction_time`, `price`, `quantity`, `symbol`

### Component B: Polymarket US trading volume calculation

- **Purpose**: Calculate the USD trading volume for each individual trade
- **Logic**: Trading volume is calculated by multiplying the trade price by the trade quantity. Since Polymarket US trades are reported directly in USD, no additional currency conversion or decimal normalization is required.
- **Key fields**: `price`, `quantity`

### Component C: Polymarket US daily aggregation

- **Purpose**: Aggregate individual trade volumes into daily totals
- **Logic**: Trading volumes are truncated to daily granularity using UTC day boundaries. Because a UTC day can span multiple trading-day files, complete coverage of the daily window is ensured before final partitions are written. The individual trade volumes are summed to produce the total daily trading volume.
- **Key fields**: `transaction_time`, `trading_volume`

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

Total value of spot trades executed on the exchange.

Trading volume

Prediction markets

Liquidity providers deposit funds into Polymarket and receive trading fees from traders (supply-side fees). Polymarket has also launched a new peer-to-peer order book with no liquidity providers involved.

Polymarket is a non-custodial prediction market protocol built on Polygon. Polymarket was founded by Shayne Coplan and launched in 2020.

Polymarket team & investors own and govern the protocol. They do not currently take a cut of the total trading fees paid by traders (revenue). Polymarket's investors include Polychain, 1Confirmation, ParaFi Capital, etc.

Polymarket US

Trading volume

Trading volume

Chain breakdown