GSC Impression Spikes Expose 'Rank Renting'. Google Tests Position 7 Pages at Top-1.

Google temporarily bumps pages from average position 7 to position 1 to measure session signals, observes Josh Bachynski.

The algorithm executes Session-Based Ranking Trials, renting top-1 real estate in short bursts to evaluate user stickiness and click-through rates.

If the test traffic fails to generate a positive interaction—yielding high bounce rates—the system downgrades the URL back to its baseline.

To weaponize this mechanism, ignore the blended average rank metric in GSC.

Filter the performance data to isolate "popped" pages—URLs displaying a baseline position of 7 but registering distinct impression spikes, such as 34 separate tests at position 1.

Deploy immediate conversion and retention optimizations on these specific targets to force the trial ranking to stick permanently.