Daily data availability before the US open and overlapping CEG asset IDs

[maroon.fly]

Hi Quantiacs Support, could you clarify two data questions?

At about 03:07 US Eastern time on 5 November 2026, fresh requests with no end-date cap returned Nasdaq-100 stock data through 2 November and SPX through 3 November. Is there a documented publication schedule for the prior session’s final data, and is it normally available before the next 09:30 ET open?

The historical Nasdaq-100 dataset returned two CEG asset IDs, tts-239110702 and tts-818716, with 318 overlapping trading dates and three price discrepancies. Could you confirm how these two IDs map to securities over time and whether the overlapping data should be corrected?

Thank you.

[support]

@maroon-fly Hello,

OHLC prices for stocks for an exchange trading day D become available between 12:00 and 13:00 UTC on business day D+2. Therefore, the final data for the prior session is not available before the next 09:30 ET market open.

We have fixed the issue with Constellation Energy Corporation ("NAS:CEG") series in our data. The correct identifier for this security is tts-239110702, which covers the full history without overlaps.

Thank you for pointing this out.

Regards,