Timeseries Data

Security NAV

GET/v2/securities/nav

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).

Included in: Growth.

Authentication

Send your API key in the x-api-key header on every request to https://api.bavest.co. The samples read it from the BAVEST_API_KEY environment variable. Get an API key · Authentication guide

Parameters

Required: one of symbol, isin, for example isin=IE00B4L5Y983.

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`

Try it

symbol query

ETF ticker symbol (e.g., `IWDA.AS`). Provide exactly one of symbol or isin; clear the ISIN example before using a symbol.

isin query

ETF ISIN code (e.g., `IE00B4L5Y983`, iShares Core MSCI World UCITS ETF). Provide exactly one of symbol or isin.

GET /v2/securities/nav?isin=IE00B4L5Y983

API key

Sent only to api.bavest.co for this request; not stored.

Sign in to send Get an API keySends with the key above, or sign in to use your account's key. Each request counts as one API call.

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

Samples read your key from BAVEST_API_KEY and follow the form.

Example response 200

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

From the docs, not your data. Long lists are cut to 3 items.

Response 200

Successful response · application/json

dataNavResponse
Net Asset Value for an ETF or mutual fund.
- navnumber (double)required
  Net Asset Value per share
  Example 664.88
- currencystringrequired
  NAV currency (ISO 4217)
  Example USD
- datestring (date)required
  NAV observation date
  Example 2025-10-17
metaResponseMeta
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.
- timeinteger
  Server-side processing time in milliseconds
  Example 17
- parametersobject
  Echo of the request parameters the endpoint resolved

Errors

400Invalid 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).
401Missing or invalid API key.
404Resource not found.
429Rate limit exceeded. Retry after the `Retry-After` header interval.
500An unexpected error occurred on the server. If the issue persists, contact support with the X-Request-Id header value.
502Upstream data provider returned an error or is temporarily unavailable. Retry after a short delay.
504The request timed out waiting for a response from the upstream data provider. This may occur for complex queries or during peak load.
defaultAn unexpected error occurred on the server. If the issue persists, contact support with the X-Request-Id header value.