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

# useMarkPricesStream

> Hook to stream mark prices for all symbols as a symbol-to-price map.

Get list of all mark prices in a `symbol` -> `price` map.

* [Tech docs](/sdks/tech-doc/modules/orderly_network_hooks#usemarkpricesstream)

### Example

```ts theme={null}
const { data: markPrices }: { data: Record<string, number> } = useMarkPricesStream();
```