> ## Documentation Index
> Fetch the complete documentation index at: https://docs.allium.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Open Interest

### Table Columns

| Column Name                | Data Type | Description                                                                                                                                                                                                                    |
| -------------------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| activity\_date             |           | The date for which metrics are being calculated. Only includes completed days.                                                                                                                                                 |
| project                    |           | Business name of the protocol being used (e.g. `uniswap`, `aave`, `lido`, `paraswap`). Consistent across verticals — every table with a `project` column uses this field to identify the top-level protocol brand.             |
| protocol                   |           | Specific version or variant of the protocol (e.g. `uniswap_v3`, `aave_v2`, `stargate_v2`). Qualifies the `project` field with version information.                                                                             |
| version                    |           | Protocol version.                                                                                                                                                                                                              |
| chain                      |           | Slug identifying the blockchain this record belongs to (e.g. `ethereum`, `base`, `avalanche`, `solana`). In per-chain tables this is always the same value; in cross-chain tables it identifies which chain the row came from. |
| pair\_index                |           | Protocol-native numeric identifier of the trading pair. Used by the protocol's contracts to reference this market.                                                                                                             |
| market\_symbol             |           | Market symbol (e.g. SOL-USD).                                                                                                                                                                                                  |
| from\_symbol               |           | Symbol of the base asset being traded (the asset whose price the market tracks).                                                                                                                                               |
| to\_symbol                 |           | Symbol of the quote asset the market is denominated in.                                                                                                                                                                        |
| long\_open\_interest\_usd  |           | Long open interest in USD.                                                                                                                                                                                                     |
| short\_open\_interest\_usd |           | Short open interest in USD.                                                                                                                                                                                                    |
| total\_open\_interest\_usd |           | Total open interest in USD (long plus short). NULL when the venue does not report open interest.                                                                                                                               |
| funding\_rate              |           | Funding rate for the interval (protocol-native units).                                                                                                                                                                         |
| premium                    |           | Premium of the mark price over the index price, expressed in protocol-native units. Drives the funding rate.                                                                                                                   |
| mark\_price\_usd           |           | Mark price of the market in USD at the end of the activity date.                                                                                                                                                               |
| extra\_fields              |           | JSON object containing additional protocol-specific fields for this market that are not part of the standard schema.                                                                                                           |
| unique\_id                 |           | Allium's deterministic unique identifier for this row. Generated from the fields that uniquely identify the record. Stable across full refreshes.                                                                              |