ALT_CLOSE and defaultPricingField is null

Ehud_I

We use a service to pull historical data and would like to get clarification regarding the pricing fields.

The service we use is:

https://api.refinitiv.com/data/historical-pricing/v1/views/interday-summaries/{symbol}

We typically retrieve the fields: "TRDPRC_1", "OFF_CLOSE" for closing price and determine the appropriate closing price based on the "defaultPricingField" and "ACVOL_UNS" for volume in units.

However, we’ve noticed that for certain RICs, even on trading days with a volume greater than 0, both "ACVOL_UNS" and the value returned by "defaultPricingField" (TRDPRC_1/OFF_CLOSE) are null. Instead, a new field, "ALT_CLOSE", is returned and appears to represent the correct closing price for that date.

This behavior occurred with the RIC WWT.V on the date 23.05.2025

Request:

https://api.refinitiv.com/data/historical-pricing/v1/views/interday-summaries/WWT.V?start=2025-05-23&end=2025-05-23

response (full response attached):

WWT.V 23.5.25.txt

"data": [

            [

                "2025-05-23",

                null,

                null,

                null,

                403,

                null,

                null,

                0.005,

                0.005,

                null,

                null,

                1,

                1,

                null,

                2.015,

                0.005

            ]

        ]

Could you please clarify the meaning and usage of the "ALT_CLOSE" field, and under what conditions it is returned instead of the usual fields?

Thank you in advance for your help.

Best regards,

Jirapongse

@Ehud_I

Thank you for reaching out to us.

This forum is dedicated to software developers using LSEG APIs. The moderators on this forum do not have deep expertise in every bit of content available through LSEG products, which is required to answer content questions such as this one.

The best resource for historical pricing API questions is the Historical Pricing API support team, which can be reached by submitting queries through MyAccount. The support team can reach out to relevant content experts to get the answer for you.