Leads past the auction date?

[Paul T.]

I use PropStream and can filter by Notice of Default, Notice of Trustee's Sale, etc. I can also search bankruptcy leads. I'm not sure I understand the timelines. I see some leads where the auction date has already passed (sometimes even by a long time), but when I cross check the property on zillow or the county records, it is still under the owner's name, and zillow still shows 'preforeclosure'. Should I still pursue these leads, or are these for sure owned by the bank at this point, and the info is just outdated?