Predictive Analytics

Personal Lines

Pinnacle was approached by a national insurer that wanted to develop a more sophisticated homeowners rating program. Their current homeowners plan was a traditional rating approach and was only based on a few factors, and the company felt they were not taking full advantage of the potential in the homeowners market. Pinnacle, through the use of predictive modeling, assisted the carrier in designing a new rating and tiering structure, which included the introduction of by-peril rating and new territory definitions. This new structure allowed the company to be more precise in rating homeowners, resulting in more adequate and competitive rates for a broader spectrum of risks.

Territory / Summit Analysis

The insurer had not reviewed or adjusted their territorial boundaries in several years; and their current territories were not based upon an analysis of their underlying loss experience.

Pinnacle began with an evaluation of available insurer and external industry data at the ZIP code level as well as their current and future policy processing capabilities. After all of the experience data was adjusted to a common base level, we used our Summit® software product to smooth the data to develop an initial adjusted pure premium by ZIP code to reflect both experience in a ZIP code and in neighboring ZIP codes. The number of additional neighboring ZIP codes used was dependent upon attaining a sufficient exposure level.

The smoothed data was then clustered using Summit® on both a contiguous and non-contiguous basis. The insurer needed to decide whether to maintain relatively contiguous definitions or use more granular and theoretically accurate non-contiguous definitions. Using statistical measures, we identified and graphed optimal definition sets. Non-contiguous definitions were selected by the client. To minimize the number of territories with a limited geographic area or only a few ZIP codes, some manual combination of “outlying” ZIP codes with territories (clusters) with similar adjusted pure premiums was performed.

Finally, we assisted the insurer in developing the necessary filing support material to gain approval. The new program is generating new business in areas of historical profitability but previously less than average competiveness. 

Underwriting & Tiering Analysis

A single state auto insurance writer hired Pinnacle to address its current rating and tiering program. We removed unnecessary underwriting restrictions and more adequately priced risk classes, which allowed the insurer to experience significant, profitable growth.

When we began, the company’s existing tiering design was only based on a few factors, including ones that significantly overlapped with the rating plan. When combined with the underwriting rules, the design was punitive and limited writable business. Through predictive modeling, we helped design a new tiering structure and applied an underwriting scoring approach to eliminate rating plan overlap and remove the overly punitive parts of the plan.