Google’s core updates, like March 2025 (63% SERP volatility) and June 2025, reshaped rankings, hitting sectors like health, finance, and news with E-E-A-T and AI-driven changes. When Google announces core updates on rollout day via Search Central, SEOs track volatility using tools like Semrush or Moz. Will a new core update, announced by mid-November 2025, trigger at least a 50% spike in SERP volatility, signaling major ranking shifts? Bet on the next SEO earthquake!

Resolution Criteria: Resolves YES if Google announces a new core algorithm update by November 15, 2025, 11:59 PM PST, via Google’s official blog, Google Search Central’s social media (e.g., X), or credible SEO sources (e.g., Search Engine Land, Moz, Search Engine Journal), AND a major SEO tool (e.g., Semrush, Moz, Sistrix) reports a SERP volatility spike of at least 50% within 30 days of the announcement. Volatility is measured by the tool’s standard metric (e.g., Semrush Sensor score). Resolves NO if no core update is announced or if announced but volatility is below 50%.

• Update 2025-08-05 (PST) (AI summary of creator comment): To measure SERP volatility, the creator has specified they will only use data from the following sources:

  • Semrush

  • Moz