Symbol tracking error

GET/v1/symbols/{symbol}/tracking-errorPromised whole

How far the security drifts from its benchmark, and what that drift earned.

Parameters

symbolpathrequired
Ticker symbol, case-insensitive.

Response contract

Every field in the response is part of the contract.

Response fields

The top level keys a live response actually returned, read off the API rather than written down here.

symboltrackingErrorannualizedActiveReturn

How this was verified

Called against 3 different subjects on the live API. Every field it returned, at every level, was compared with the contract above. Last checked August 18, 2026.

Request

curl "https://api.massari.ai/v1/symbols/AAPL/tracking-error" \
  -H "Authorization: Bearer $MASSARI_TOKEN"

Example response

{
  "symbol": "AAPL",
  "trackingError": 36.779510143934225,
  "annualizedActiveReturn": 16.560884734639213
}

A real response from the live API, captured August 18, 2026. Nothing was dropped, so this is the whole shape. Either way it is valid JSON.