Missing entries for some stocks in Tickers v3 API

[bluelu]

Hi

I am using the v3/reference/tickers API to fetch all symbols traded on a given exchange on a given date. I observed some weird behaviour, where some stocks go missing from one day to the other, then reappearing again.

For reference, consider the Yahoo stock on 2010-07-22 until 2010-07-24:

• Non-empty response from v3/reference/tickers?market=stocks&exchange=XNAS&ticker=YHOO&date=2010-07-22&apiKey=*
• empty response from v3/reference/tickers?market=stocks&exchange=XNAS&ticker=YHOO&date=2010-07-23&apiKey=*
• again non-empty response from v3/reference/tickers?market=stocks&exchange=XNAS&ticker=YHOO&date=2010-07-24&apiKey=*

Also note the field last_updated_utc, which is only set to the day after, while the stock is clearly being traded on more dates afterwards.

Thanks

[herebebeasties]

FWIW https://api.polygon.io/v3/reference/tickers?market=stocks&ticker=YHOO&date=2010-07-23&apiKey=* has YHOO, but without the primary_exchange set (which is why your filtered view is missing it).

[jrbell19]

The files which we get were missing this field. We have a solution for these types of one-off data issues, however I'm not sure when to expect the ultimate resolution.