Fund Ownership Data

Retrieve mutual fund and ETF ownership data showing which funds hold positions in a specific security and their holding amounts. Monitor institutional fund interest and concentration.

Use Case: See which Vanguard and BlackRock funds have the largest positions in Microsoft.

GET /v1/ownership/fund

Get Fund Ownership Data

cURL

curl --request GET \
  --url https://api.aries.com/v1/ownership/fund \
  --header 'Authorization: Bearer <token>'

200

default

{
  "data": [
    {
      "name": "Vanguard Total Stock Market Index Fund",
      "share": 466994523,
      "change": -2711875,
      "filingDate": "2025-09-30",
      "source": "",
      "percentOfShares": 0
    }
  ]
}

Authorizations

Authorization · string · header · required

OAuth2 Bearer token: obtain an access token from the token endpoint and send it in the Authorization header.

Query Parameters

symbol · string · required

Stock symbol, such as AAPL. Use it to narrow results to one company.

limit · integer<int32>

Optional maximum number of results to return. Use it to keep ownership lists small for UI views.

Response

200

application/json

Fund ownership data.

data · object[]

List of institutional ownership records

Show child attributes