Mutual Fund & ETF Holders API for Stocks

Returns a list of mutual funds and ETFs that hold a given stock, including their reported position size, percent held, and estimated value.

This endpoint returns the mutual funds and ETFs that hold a given stock, including each fund’s reported position size, percent held, and estimated value. 

It is stock-centric, so for ETFs and mutual funds the endpoint returns an empty result:

This is expected behavior.

When to Use This Endpoint

  • Show “Funds Holding This Stock” sections on equity profile pages.
  • Analyze the overlap in ownership between stocks and significant index funds or ETFs.
  • Identify the concentration of a stock across passive and active funds.
  • Support discovery use cases (e.g. ,“which ETFs give exposure to this stock”).

Request Parameters

POST
v1/holders/mutual-funds
symbol stringrequired

Asset identifier (ticker symbol).

limit integeroptional

Maximum number of matched items returned (user-defined).

offset integeroptional

Pagination offset (0-based).

filters arrayoptional

Optional filter expressions.

Each filter condition is defined as: [field, operator, value]. Conditions can be combined using logical operators and/or.

Supported operators:

Numeric fields:

  • > - greater than
  • >= - greater than or equal
  • < - less than
  • <= - less than or equal
  • = - equals
  • <> - not equal

String fields:

  • like – pattern match (requires % as a wildcard)
  • not_like - pattern does not match (requires % as a wildcard)
  • contains - value exists in string
  • not_contains - value does not exist in string
  • startswith - string starts with value
  • endswith - string ends with value

% usage examples:

  • %abc% - matches any string containing "abc"
  • abc% - matches any string starting with "abc"
  • %abc - matches any string ending with "abc"
sort_by arrayoptional

Optional sorting configuration for result items. Each sorting setup is defined as [selector, desc]:

  • selector - Metric used for sorting (e.g., value).
  • desc - Sorting direction (true for descending, false for ascending).

Sortings can be combined using ,.

tag stringoptional

User-defined identifier for the task (max 255 characters).

It is returned in the response data object, allowing you to match results with the corresponding request. It does not affect API processing or filtering logic.

Example Request
curl --location "https://api.finimpulse.com/v1/holders/mutual-funds" \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <API_TOKEN>" \
  -d '{
      "symbol": "NVDA",
      "limit": 20,
      "offset": 0,
      "filters": [
          "name",
          "like",
          "VANGUARD%"
      ],
      "sort_by": [
          {
              "selector": "value",
              "desc": false
          }
      ],
      "tag": "just tag"
  }'
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;

var client = new HttpClient();
var url = "https://api.finimpulse.com/v1/holders/mutual-funds";

client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "<API_TOKEN>");
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

var json = @"{
    ""symbol"": ""NVDA"",
    ""limit"": 20,
    ""offset"": 0,
    ""filters"": [
        ""name"",
        ""like"",
        ""VANGUARD%""
    ],
    ""sort_by"": [
        {
            ""selector"": ""value"",
            ""desc"": false
        }
    ],
    ""tag"": ""just tag""
}";
var content = new StringContent(json, Encoding.UTF8, "application/json");

var response = await client.PostAsync(url, content);
var result = await response.Content.ReadAsStringAsync();
Console.WriteLine(result);
<?php
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.finimpulse.com/v1/holders/mutual-funds",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "Authorization: Bearer <API_TOKEN>"
  ],
  CURLOPT_POSTFIELDS => json_encode(
[
      "symbol" => "NVDA",
      "limit" => 20,
      "offset" => 0,
      "filters" => [
        "name",
        "like",
        "VANGUARD%"
      ],
      "sort_by" => [
        [
          "selector" => "value",
          "desc" => false
        ]
      ],
      "tag" => "just tag"
    ]
  )
]);

$response = curl_exec($curl);
curl_close($curl);

echo $response;
import urllib.request
import json

url = "https://api.finimpulse.com/v1/holders/mutual-funds"
headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer <API_TOKEN>"
}
data = {
    "symbol": "NVDA",
    "limit": 20,
    "offset": 0,
    "filters": [
        "name",
        "like",
        "VANGUARD%"
    ],
    "sort_by": [
        {
            "selector": "value",
            "desc": False
        }
    ],
    "tag": "just tag"
}

req = urllib.request.Request(url,
    data=json.dumps(data).encode("utf-8"),
    headers=headers,
    method="POST")

with urllib.request.urlopen(req) as response:
    result = json.loads(response.read().decode("utf-8"))
    print(result)
const https = require('https');

const data = JSON.stringify({
    "symbol": "NVDA",
    "limit": 20,
    "offset": 0,
    "filters": [
        "name",
        "like",
        "VANGUARD%"
    ],
    "sort_by": [
        {
            "selector": "value",
            "desc": false
        }
    ],
    "tag": "just tag"
});

const options = {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer <API_TOKEN>',
    'Content-Length': Buffer.byteLength(data)
  }
};

const req = https.request('https://api.finimpulse.com/v1/holders/mutual-funds', options, (res) => {
  let body = '';
  res.on('data', chunk => body += chunk);
  res.on('end', () => console.log(JSON.stringify(JSON.parse(body), null, 2)));
});

req.on('error', (e) => console.error(e));
req.write(data);
req.end();

Response

Returns pagination metadata and a list of fund holder records.

Pagination Fields

total_count integer

Total number of matching holder records.

items_count integer

Number of holder records returned.

items array

Array of mutual fund/ETF holder records.

Holder Record Fields

name string

Fund or ETF name.

position_direct integer

Shares held in a direct position.

position_report_date string

Date of the fund’s holding report.

pct_held number

Percentage of shares held by the fund.

value number

Market value of the reported position.

Example Response
{
    "task_id": "54ddba11-eb8d-437b-8f40-883fff2f01dc",
    "status_code": 20000,
    "status_message": "OK",
    "cost": 0.0018,
    "data": {
        "symbol": "NVDA",
        "limit": 20,
        "offset": 0,
        "filters": [
            "name",
            "like",
            "VANGUARD%"
        ],
        "tag": "just tag",
        "sort_by": [
            {
                "selector": "value",
                "desc": false
            }
        ]
    },
    "result": {
        "total_count": 5,
        "items_count": 5,
        "items": [
            {
                "name": "VANGUARD WORLD FUND-Vanguard Information Technology Index Fund",
                "position_direct": 122445532,
                "position_report_date": "2025-11-30T00:00:00Z",
                "pct_held": 0.005,
                "value": 22727115269
            },
            {
                "name": "VANGUARD INSTITUTIONAL INDEX FUNDS-Vanguard Institutional Index Fund",
                "position_direct": 142238009,
                "position_report_date": "2025-09-30T00:00:00Z",
                "pct_held": 0.00589999,
                "value": 26400796937
            },
            {
                "name": "VANGUARD INDEX FUNDS-Vanguard Growth Index Fund",
                "position_direct": 220607426,
                "position_report_date": "2025-09-30T00:00:00Z",
                "pct_held": 0.0091,
                "value": 40946944474
            },
            {
                "name": "VANGUARD INDEX FUNDS-Vanguard 500 Index Fund",
                "position_direct": 602010941,
                "position_report_date": "2025-09-30T00:00:00Z",
                "pct_held": 0.0248,
                "value": 111739251126
            },
            {
                "name": "VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund",
                "position_direct": 726650679,
                "position_report_date": "2025-09-30T00:00:00Z",
                "pct_held": 0.0299,
                "value": 134873632972
            }
        ]
    }
}