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

# Futures columns

> The complete 30-column Meridian futures contract.

## OHLCV

| Column          | Unit         | Aggregation |
| --------------- | ------------ | ----------- |
| `open_price`    | quote        | first       |
| `high_price`    | quote        | maximum     |
| `low_price`     | quote        | minimum     |
| `close_price`   | quote        | last        |
| `coin_volume`   | base asset   | sum         |
| `dollar_volume` | quote or USD | sum         |

## Trade flow

| Column               | Unit         | Aggregation |
| -------------------- | ------------ | ----------- |
| `buy_trades`         | count        | sum         |
| `sell_trades`        | count        | sum         |
| `total_trades`       | count        | sum         |
| `buy_coin_volume`    | base asset   | sum         |
| `sell_coin_volume`   | base asset   | sum         |
| `buy_dollar_volume`  | quote or USD | sum         |
| `sell_dollar_volume` | quote or USD | sum         |

## Open interest

| Column                       | Unit         | Aggregation |
| ---------------------------- | ------------ | ----------- |
| `coin_open_interest_high`    | base asset   | maximum     |
| `coin_open_interest_low`     | base asset   | minimum     |
| `coin_open_interest_close`   | base asset   | last        |
| `dollar_open_interest_high`  | quote or USD | maximum     |
| `dollar_open_interest_low`   | quote or USD | minimum     |
| `dollar_open_interest_close` | quote or USD | last        |

Use dollar open interest for cross-asset notional comparisons. Calculate percentage change from at least two `dollar_open_interest_close` observations.

## Funding and premium

| Column             | Unit        | Aggregation |
| ------------------ | ----------- | ----------- |
| `funding_rate`     | per 8 hours | last        |
| `funding_rate_avg` | per 8 hours | last        |
| `premium`          | ratio       | last        |

## Liquidations

| Column                            | Unit         | Aggregation |
| --------------------------------- | ------------ | ----------- |
| `buy_liquidations`                | count        | sum         |
| `sell_liquidations`               | count        | sum         |
| `buy_liquidations_coin_volume`    | base asset   | sum         |
| `sell_liquidations_coin_volume`   | base asset   | sum         |
| `liquidations_coin_volume`        | base asset   | sum         |
| `buy_liquidations_dollar_volume`  | quote or USD | sum         |
| `sell_liquidations_dollar_volume` | quote or USD | sum         |
| `liquidations_dollar_volume`      | quote or USD | sum         |

Liquidation side is print side. Do not translate buy-side and sell-side prints into long and short position labels without source-specific provenance.