latestOpenAPI 3.1.02026-08-145096557.0 KB

1c983de099e2

us-equity-ref-corporate-actions

US Equities Basic Adjustment Factors

The U.S. Equities Basic Adjustment Factors dataset provides adjustment factors that affect price, volume or both for corporate events that impact historical equity time series. Each adjustment entry is accompanied by the adjustment reason, enabling transparent and reproducible application of corporate-action adjustments. The dataset allows users to compute both forward- and backward-adjusted price and volume series, supporting a wide range of analytical and back-testing methodologies. Coverage includes all U.S. exchange-listed equities, with historical data available from 2007 onward.

For more details, please refer to the dataset documentation: US Equities Basic Adjustment Factors 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>
get/v1/data/us-equity-ref/adj-factors-basic

Query parameters

sortstring nullable

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.

columnsstring nullable

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.

offsetinteger

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.

limitinteger

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.

response_format'json' | 'csv' | 'csv_gzip'

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": [
    {
      "ASID": 1010000000019026,
      "Ticker": "WFC",
      "EffectiveDate": "2023-08-03",
      "AdjustmentFactor": 0.992239467849224,
      "AdjustmentReason": "CashDiv",
      "EventId": "3087413"
    }
  ],
  "pagination": {
    "limit": 1000,
    "next_offset": 2000,
    "offset": 1000
  }
}