# Security NAV

> Returns the current Net Asset Value (NAV) for any security that has one.

`GET https://api.bavest.co/v2/securities/nav`

Group: Timeseries Data. Route id: `v2_securities_nav`. Included in: Growth.

## Description

Returns the current Net Asset Value (NAV) for any security that has one.

The endpoint looks up the security type from the Security table and routes
to the appropriate data source:
- **ETF / ETP / ETN** — ETF metrics table
- **MUTUAL_FUND** — Fund metrics table, else the ETF metrics table

Returns 404 for security types that do not carry a NAV (e.g. stocks).

## Authentication

Send your API key in the `x-api-key` header on every request. No key yet? Sign up at https://dashboard.bavest.co/sign-up (free trial). The examples read the key from the `BAVEST_API_KEY` environment variable.

## Parameters

| Name | In | Type | Required | Description |
|---|---|---|---|---|
| `symbol` | query | string | one of symbol, isin | ETF ticker symbol (e.g., `IWDA.AS`). Provide exactly one of symbol or isin; clear the ISIN example before using a symbol. |
| `isin` | query | string | one of symbol, isin | ETF ISIN code (e.g., `IE00B4L5Y983`, iShares Core MSCI World UCITS ETF). Provide exactly one of symbol or isin. Example `IE00B4L5Y983`. |

Required: one of `symbol`, `isin`.

## Response

200 Successful response (`application/json`).

| Field | Type | Always present | Description |
|---|---|---|---|
| `data` | NavResponse | no | Net Asset Value for an ETF or mutual fund. |
| `data.nav` | number (double) | yes | Net Asset Value per share. Example: `664.88`. |
| `data.currency` | string | yes | NAV currency (ISO 4217) Example: `USD`. |
| `data.date` | string (date) | yes | NAV observation date. Example: `2025-10-17`. |
| `meta` | ResponseMeta | no | Response envelope metadata. Always present on a 200: `time` is set by `core/response.py` on every successful response. Errors carry the same block, built by the same code, so a client parses one meta shape whether the call succeeded or failed. |
| `meta.time` | integer | no | Server-side processing time in milliseconds. Example: `17`. |
| `meta.parameters` | object | no | Echo of the request parameters the endpoint resolved. |

## Example request

```bash
curl 'https://api.bavest.co/v2/securities/nav?isin=IE00B4L5Y983' \
  -H "x-api-key: $BAVEST_API_KEY"
```

## Example response

```json
{
  "data": {
    "nav": 145.4398,
    "currency": "USD",
    "date": "2026-10-01"
  },
  "meta": {
    "parameters": {
      "isin": "IE00B4L5Y983"
    },
    "time": 12
  }
}
```

## Errors

| Status | Meaning |
|---|---|
| 400 | Invalid request parameters. Returned when required query parameters are missing, have invalid types, or violate constraints (e.g., providing both symbol and isin when they are mutually exclusive). |
| 401 | Missing or invalid API key. |
| 404 | Resource not found. |
| 429 | Rate limit exceeded. Retry after the `Retry-After` header interval. |
| 500 | An unexpected error occurred on the server. If the issue persists, contact support with the X-Request-Id header value. |
| 502 | Upstream data provider returned an error or is temporarily unavailable. Retry after a short delay. |
| 504 | The request timed out waiting for a response from the upstream data provider. This may occur for complex queries or during peak load. |
| default | An unexpected error occurred on the server. If the issue persists, contact support with the X-Request-Id header value. |

- `403` from the gateway: the API key is invalid or switched off.
- `429` with message `Limit Exceeded`: the monthly quota of the key is used up. With `Too Many Requests`: the key is throttled, or this route is not in the key's plan. Wait for `Retry-After` when it is sent.

## Links

- HTML page: https://dashboard.bavest.co/docs/v2_securities_nav
- OpenAPI: https://dashboard.bavest.co/openapi.json (YAML: https://dashboard.bavest.co/openapi.yaml)
- Authentication: https://dashboard.bavest.co/docs/authentication.md
- MCP server for AI agents: https://dashboard.bavest.co/docs/mcp.md
- All routes: https://dashboard.bavest.co/llms.txt