matching core update
The second Google core update of 2026 was a big one, causing a lot of search ranking volatility over the rollout.
Read on SEL — Algorithm Updates →Nearly 80% of top results shifted as Google’s latest update hit aggregators and boosted brands, official sites, and data-rich sources.
Read on SEL — Algorithm Updates →The May 2026 Core Update was announced on 21st May 2026, following the March Core Update. It was completed on the 2nd June. Data, analysis, examples and rankings for affected domains are shown below…
Read on Sistrix →Everyone in SEO knows Google Core Updates: overnight, the visibility of domains shifts. Our data now shows the same pattern in ChatGPT. On May 23, 2026, the switch from GPT-5 mini to GPT-5.5 shifted…
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