> ## Documentation Index
> Fetch the complete documentation index at: https://docs.focusalpha.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Daily Market Cap

> Daily market capitalisation for a listed security, in the listing's own currency.

Daily Market Cap provides the daily market capitalisation series for a listed security. Each observation is one symbol on one date, in that listing's own currency. It is served by the same endpoint as [daily prices](/market-data/prices), selected with `series=market_cap`, and rows are returned newest date first.

<Info>
  **Plan:** Professional and above · **Credits:** 1 per call
</Info>

## What You Can Use Daily Market Cap For

Track how a company's size changed over time. Distinguish a stock split from a real decline: a split halves the price but leaves market cap unchanged, so market cap is the reliable check. Build size bands for a universe on a given date.

## Daily Market Cap Coverage

<Warning>
  History starts **2025-07-14** — about one year, the same window as [daily prices](/market-data/prices). There is nothing before that date.
</Warning>

## One Row Per Symbol Per Date

Like prices, a company with more than one listing returns one row per symbol per date, each naming its `symbol`. Choose the listing you mean.

## Daily Market Cap Currency

Values are in the row's own `currency` and are not converted to US dollars.

Note the asymmetry with the [company registry](/companies/registry), where the profile's `market_cap` is denominated in `market_cap_currency` rather than in the listing's price currency — for London names, GBP against a GBp price. To compare sizes across countries, use [Company Screening](/companies/screening), which converts to US dollars.

## Daily Market Cap Sources

Market cap is a vendor-supplied daily figure for the listing.

## Query Daily Market Cap

Use the market data endpoint with `series=market_cap`.

<ParamField path="company_id" type="string" required>
  A ticker with its market suffix for non-US listings, a `company_id`, a CIK or an ISIN.
</ParamField>

<ParamField query="series" type="string" required>
  Set to `market_cap` for this dataset.
</ParamField>

<ParamField query="date_gte" type="string">
  Earliest date, `YYYY-MM-DD`. `date_lte` sets the ceiling.
</ParamField>

<ParamField query="limit" type="integer" default="100">
  Rows per page, between 1 and 1000. Page through with `cursor`.
</ParamField>

## Related Datasets

See also [Daily Prices](/market-data/prices), [Corporate Events](/companies/corporate-events) for splits, [Company Screening](/companies/screening) for USD-converted size filters, and [Financial Metrics](/financials/metrics) for valuation ratios.

<RequestExample>
  ```bash cURL theme={null}
  curl "https://api.focusalpha.ai/v1/companies/AAPL/market-data?series=market_cap&limit=2" \
    -H "Authorization: Bearer $FOCUSALPHA_API_KEY"
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "data": [
      {
        "symbol": "AAPL",
        "company_id": "cmp_000584",
        "date": "2026-08-31",
        "currency": "USD",
        "market_cap": "4653688748600"
      }
    ],
    "next_cursor": "WyIyMDI2LTA4LTI4IiwiQUFQTCJd",
    "coverage": {
      "available_from": "2025-07-14",
      "available_to": null,
      "update_frequency": "daily",
      "history_status": "one_year_from_2025_07_14"
    }
  }
  ```
</ResponseExample>