# Where can I get Novig volume and open interest?

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Canonical: https://novigapi.com/answers/novig-volume-open-interest
Updated: 2026-11-15

Novig's free markets.csv gives daily volume and open interest per market. novigapi.com returns both live on every market row and in /ohlc/daily; Mahomes Over 240.5 passing yards showed 261,004 one-cent contracts traded and 250,695 open on 15 Nov 2026. Multi-book odds feeds checked here do not carry Novig volume. (Source: [Novig docs: Exchange Data](https://docs.novig.com/public-data/overview.md))

Volume shows where the money is; open interest shows how much is still riding. Together they tell you which Novig prices are worth trusting.

Our league pages rank the most traded markets each day from the same fields.

## How the options compare

Volume and open interest, checked 15 Nov 2026

| Source | Depth per market | History | Paid plans |
| --- | --- | --- | --- |
| Novig daily CSVs | Daily OHLC, volume and open interest; no intraday book | Trades from 3 Aug 2026, markets from 4 Aug 2026 | Free |
| novigapi.com | Full resting book, trades, OHLC, fair price, line moves | Daily from 4 Aug 2026 (Novig's CSVs with names joined); intraday ticks since 12 Nov 2026 | Developer $49, Production $149, Scale $499 a month; $9 for 1,000 credits that never expire |
| The Odds API | One price per outcome per book (name, price, point); lay odds and bet limits on some exchanges | Paid plans: featured markets from Jun 2020 at 5-minute snapshots, props from May 2023 | $30 (20K credits) to $249 (15M credits) a month |


## Where novigapi.com falls short

> Live volume on novigapi.com is read from Novig's public market data every few seconds, not from a trade-by-trade count, so it can lag the tape by up to 10 seconds.

## Try it

```bash
curl -s "https://novigapi.com/api/v1/markets?league=NBA&status=open&limit=50" \
  -H "Authorization: Bearer $NOVIGAPI_KEY"
```

Read the [endpoint reference](https://novigapi.com/docs/endpoints), compare [plans and credits](https://novigapi.com/pricing), or send a request from the [playground](https://novigapi.com/playground).

## Questions

### Is Novig volume in contracts or dollars?

Contracts. The API counts contracts that pay $0.01 each; Novig's daily CSV counts $1 contracts, so its numbers are 100 times smaller for the same trading.

### Which Novig markets trade most?

Each league page on novigapi.com lists the day's most traded markets from the same volume field.

## Sources

- [Novig docs: Exchange Data](https://docs.novig.com/public-data/overview.md)
- [The Odds API: plans](https://the-odds-api.com/#get-access)
- [novigapi.com endpoint reference](https://novigapi.com/docs/endpoints)

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