Data-driven analysis of auto insurance rates, carrier comparisons, and industry trends. All insights powered by SERFF regulatory filing data.
We analyzed 1,746 California ZIP codes across 6 major carriers to find where auto insurance costs the most — and the least. The results might surprise you.
Read more →We compared GEICO and State Farm premiums across 1,700+ California ZIP codes using SERFF filing data. Here's what we found.
Read more →Every auto insurance rate change in the US goes through SERFF. Here's how the system works, what's in a rate filing, and why this public data is a goldmine for competitive intelligence.
Read more →Every major comparison site — Bankrate, NerdWallet, The Zebra — uses the same underlying data source. Here's how the insurance rate data supply chain works, and why it matters.
Read more →Quadrant Information Services powers rate data for Bankrate, NerdWallet, The Zebra, and virtually every major insurance comparison site. Here's what they do, how their data works, and what alternatives exist.
Read more →Bankrate and NerdWallet both rely on the same data source for insurance rate comparisons. Here's exactly how the process works — and what gets lost in translation.
Read more →A breakdown of the major insurance rate data providers — Quadrant, Verisk, LexisNexis, S&P Global, and SERFF — and how they differ in coverage, freshness, and transparency.
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