> From TickerLayer docs, Symbols: https://tickerlayer.com/docs/rest/symbols#overnight-symbols
> REST base URL https://api.tickerlayer.com, API key in the `x-api-key` header. WebSocket wss://stream.tickerlayer.com?apiKey=YOUR_API_KEY. Full API reference: https://tickerlayer.com/llms-full.txt

## Overnight symbol list

**Endpoint:** `GET /overnight/symbols`

The US stocks and ETFs covered by the overnight session add-on, and whether the session is open right now.

### Request

```bash
curl -sS "https://api.tickerlayer.com/overnight/symbols" \
  -H "x-api-key: <YOUR_API_KEY>"
```

### Response

```json
{
  "session_open": false,
  "results_count": 2,
  "results": [
    { "symbol": "US:KO", "kind": "stock" },
    { "symbol": "US500ETF", "kind": "etf" }
  ]
}
```

### Notes

Needs the overnight add-on: without it the route answers `403 overnight access not enabled for your account`. See [Overnight session](https://tickerlayer.com/docs/products/stocks#overnight).