April 3, 2018—Allstate ended 2017 as the No. 4 insurer, according to data released by the National Association of Insurance Commissioners.

Allstate's cumulative market share was 26.41 percentage points. In 2016, Allstate was ranked No. 3, with a market share of 39.94 percentage points.

State Farm was No.1 for 2017 and 2016.