Allstate Auto — Prior years decreased by 17.2% to -$840.00M in Q1 2026 compared to the prior quarter. Year-over-year, this metric declined by 237.3%, from -$249.00M to -$840.00M. Over 4 years (FY 2021 to FY 2025), Auto — Prior years shows a downward trend with a 80.3% CAGR. This decline may warrant attention — for this metric, higher values are generally preferred.
Favorable development (a reduction in reserves) increases current period underwriting income, while unfavorable development (an increase in reserves) reduces it. Consistent unfavorable development may signal inadequate pricing or poor claims management in past periods.
This metric represents the net favorable or unfavorable development of loss reserves established for auto insurance clai...
Comparable to 'prior year reserve development' reported by other property and casualty insurers, which is a standard indicator of actuarial discipline and reserve adequacy.
all_segment_auto_prior_years| Q2 '21 | Q3 '21 | Q4 '21 | Q1 '22 | Q2 '22 | Q3 '22 | Q4 '22 | Q1 '23 | Q2 '23 | Q3 '23 | Q4 '23 | Q1 '24 | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Value | -$33.00M | $77.00M | $170.00M | $151.00M | $275.00M | $643.00M | $180.00M | -$28.00M | $116.00M | $33.00M | $173.00M | -$74.00M | -$180.00M | -$65.00M | -$45.00M | -$249.00M | -$431.00M | -$483.00M | -$717.00M | -$840.00M |
| QoQ Change | — | +333.3% | +120.8% | -11.2% | +82.1% | +133.8% | -72.0% | -115.6% | +514.3% | -71.6% | +424.2% | -142.8% | -143.2% | +63.9% | +30.8% | -453.3% | -73.1% | -12.1% | -48.4% | -17.2% |
| YoY Change | — | — | — | — | +933.3% | +735.1% | +5.9% | -118.5% | -57.8% | -94.9% | -3.9% | -164.3% | -255.2% | -297.0% | -126.0% | -236.5% | -139.4% | -643.1% | <-999% | -237.3% |