Market Cap API

Market capitalization, or market cap, is the total value of a company's outstanding common shares held by investors. Market cap is calculated by multiplying the market price per common share by the total number of common shares outstanding. Our API provides historical market cap data for a few thousand companies.

API Endpoint

https://financialdata.net/api/v1/market-cap?identifier=MSFT&key=API_KEY

Query Parameters

NameTypeDescriptionExample
identifierstringThe trading symbol for a security, or the central index key (CIK). The latter is assigned to the entity by the United States Securities and Exchange Commission.MSFT, 0000789019
formatstring(Optional) The format of the returned data, either JSON or CSV. Defaults to JSON.json, csv

Sample Response

[
  {
    "trading_symbol": "MSFT",
    "central_index_key": "0000789019",
    "registrant_name": "MICROSOFT CORP",
    "fiscal_year": "2024",
    "market_cap": 2800000000000.0,
    "change_in_market_cap": 1000000000000.0,
    "percentage_change_in_market_cap": 55.5555555555556,
    "shares_outstanding": 7433038381,
    "change_in_shares_outstanding": 3274659,
    "percentage_change_in_shares_outstanding": 0.0440748740138738
  },
  {
    "trading_symbol": "MSFT",
    "central_index_key": "0000789019",
    "registrant_name": "MICROSOFT CORP",
    "fiscal_year": "2023",
    "market_cap": 1800000000000.0,
    "change_in_market_cap": -700000000000.0,
    "percentage_change_in_market_cap": -28.0,
    "shares_outstanding": 7429763722,
    "change_in_shares_outstanding": -28128150,
    "percentage_change_in_shares_outstanding": -0.377159530907181
  },
  ...
]
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