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US Equities Detailed Shares Outstanding
The U.S. Equities Shares Outstanding (Detailed) dataset provides a granular, event-level history of shares outstanding for U.S. exchange-listed equity securities. It extends the basic shares outstanding dataset by exposing additional metadata and change attribution, enabling deeper analysis of share count dynamics over time. In addition to core fields such as algoseek SecId, ticker symbol, effective date, and shares outstanding, the detailed dataset includes the security name, the change in shares outstanding relative to the prior value, a unique event identifier for each update, the security’s listing date, and the current security status (e.g., active, in default, or inactive). The dataset is updated continuously throughout the trading day, providing timely visibility into newly reported or revised share count changes. It is designed to support valuation modeling, capitalization analysis, regulatory reporting, and research workflows that require event-level explainability and precise share count attribution.
For more details, please refer to the dataset documentation: US Equities Detailed Shares Outstanding Guide.
<details> <summary>**Advanced Filtering**</summary>You can provide one or multiple filter expressions based on the dataset's columns to narrow down the results. For example, StartDate.gt=2023-01-01&StartDate.lt=2023-12-31, Ticker=AAPL.
Please refer to the <a href="https://algoseek.com/docs/rest-api/tutorial/advanced-filtering">Advanced Filtering Guide</a> for the extensive reference.
</details>Query parameters
Sorting criteria for the results. Provide a column name with optional prefix '+' for ascending order, or prefix with '-' for descending order. Multiple sorting fields may be supported depending on the dataset. If sort prefix is not provided, the ascending order is applied.
Sorting criteria for the results. Provide a column name with optional prefix '+' for ascending order, or prefix with '-' for descending order. Multiple sorting fields may be supported depending on the dataset. If sort prefix is not provided, the ascending order is applied.
A comma-separated list of columns to include in the response. Use this parameter to select only specific fields from the dataset. If not provided, all available columns will be returned.
A comma-separated list of columns to include in the response. Use this parameter to select only specific fields from the dataset. If not provided, all available columns will be returned.
Number of records to skip before returning results. To be used with the limit parameter for pagination. If not provided, defaults to 0.
Number of records to skip before returning results. To be used with the limit parameter for pagination. If not provided, defaults to 0.
Maximum number of records to return. Default and maximum values depend on the response format; see format_limits in the schema for details.
Maximum number of records to return. Default and maximum values depend on the response format; see format_limits in the schema for details.
Note the lowercase which is used for the consistency with other projects and tools
The type of the data to return
Response
JSON, CSV file, or gzip-compressed CSV file, depending on the value of response_format query parameter
Example response
{
"data": [
{
"SecId": 2108727,
"Ticker": "VOOG",
"ASID": 1010000000018709,
"CreatedDate": "2023-08-03",
"ChangedDate": "2023-08-03",
"EffectiveDate": "2023-08-02",
"Name": "Vanguard S&P 500 Growth ETF",
"SharesOutstanding": 31245972,
"SharesOutstandingDiff": 400000,
"EventId": 5253292,
"ListDate": "2010-09-09",
"Status": "A"
}
],
"pagination": {
"limit": 1000,
"next_offset": 2000,
"offset": 1000
}
}