Institutional Holdings API for Marathon Petroleum Corp (MPC)

• cURL
• Python
• JavaScript

curl "https://financialdata.net/api/v1/institutional-holdings?identifier=MPC&key=API_KEY"

import requests

                                                url = 'https://financialdata.net/api/v1/institutional-holdings?identifier=MPC&key=API_KEY'    
                                                response = requests.get(url)

                                                print(response.json())
                                            

const url = 'https://financialdata.net/api/v1/institutional-holdings?identifier=MPC&key=API_KEY';
                                            
                                                const response = await fetch(url);
                                                const data = await response.json();

                                                console.log(data);
                                            

[
  {
    "investor_name": "White Pine Investment CO",
    "central_index_key": "0001318259",
    "period_of_report": "2026-09-30",
    "issuer_name": "Marathon Petroleum Corp",
    "trading_symbol": "MPC",
    "cusip_number": "56585A102",
    "title_of_security": "COM",
    "market_value": 16363000.0,
    "amount_of_securities": 41382,
    "price_per_security": 395.413464791455,
    "shares_or_principal": "SH",
    "put_or_call": "N/A",
    "investment_discretion": "SOLE",
    "portfolio_weight": 0.0340697802735493
  },
  ...
]

Institutional holdings are the securities in an investment portfolio owned by investment or pension funds, insurance companies, investment firms, or other large organizations that manage funds on behalf of others. The API endpoint provides data on institutional investors with holdings of at least $100 million. There is a limit of 100 records per API call.