> if an employee can predict specific search results to such a granular extent

It's not a prediction, it's a query in a tool/database that's supposed to hold counts.

There's no rigging here - it's just a summary of historical data being accessed and used before being public, in violation of confidentiality agreements. If he had just sourced the data without acting on it, the system would have still logged somewhere, but likely nobody would have looked at it. My understanding is that the last couple weeks before being released won't dramatically change counts unless an extraordinary event happens that drowns the last 11 months of data.