An SEO glossary of terms every marketer should know in 2026
A practical, current glossary covering the essential SEO terminology every marketer should be comfortable with, from foundational concepts to 2026-specific terms.
6 min read
Third-party volatility tracking tools monitor ranking fluctuation across large samples of tracked keywords, providing an early, if imperfect, signal that a core update rollout may be in progress, often before Google officially confirms anything.
How volatility trackers work
These tools track ranking positions for a large, standardised sample of keywords across many sites daily, calculating an aggregate volatility score representing how much rankings shifted compared to a normal baseline day — a spike suggests something significant is happening algorithmically.
- Track ranking positions across a large sample of keywords daily.
- Calculate an aggregate volatility score relative to a normal baseline.
- A significant spike suggests an algorithm change is likely in progress, even before official confirmation.
Well-known tracking tools and dashboards
Semrush's Sensor, MozCast, and Search Engine Land's own tracking coverage are among the more established volatility monitoring resources, each with slightly different keyword samples and methodologies, which is exactly why cross-referencing more than one is worthwhile.
A single volatility tracker's spike could reflect its own specific keyword sample rather than a genuine, broad algorithm change — agreement across multiple independent trackers is a meaningfully stronger signal.
How to interpret volatility data responsibly
- Cross-reference at least two independent tracking sources before drawing firm conclusions.
- Check Google's official Search Status Dashboard for confirmation once volatility is observed.
- Remember that elevated volatility on a tracker does not tell you which specific sites or content types were most affected — that requires your own site's data.
Connecting tracker data to your own site
Aggregate volatility data tells you something is happening broadly, but your own Search Console and analytics data is what actually tells you whether, and how, your specific site was affected — the two data sources serve different, complementary purposes.
Frequently asked questions
Are volatility trackers free to use?
Many offer a free, basic view of their aggregate volatility score, with more detailed data available through their paid SEO platform subscriptions.
Can volatility trackers predict an update before it happens?
No, they detect volatility already occurring, sometimes before Google's official confirmation, but they cannot reliably predict a future update in advance.
Should I make site changes based purely on volatility tracker data?
No — use it as an early signal to watch closely, but wait for confirmed update details and your own site's specific data before making significant changes.
If you want help interpreting volatility and update data for your own site, talk to our team.
The takeaway
Cross-reference at least two independent volatility trackers before drawing conclusions — a single tool's sensor data can be skewed by its specific keyword sample, but agreement across multiple sources is a stronger signal.
Written by Fibvo — Bengaluru and Erode, India — working with clients in other time zones. Questions, or think we have it wrong? Tell us.
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