National Underwriter's Top 100 and Heads of the Lines lists — the data for which is provided by S&P Global Market Intelligence — offer a look at who's on top, who's taken a hit, and who's making progress in a crowded and highly competitive P&C market.

Today, we focus on those P&C groups are leading in net premium growth, and those who now find themselves lagging in terms of net premiums written (in $000s). The "NPW Rank" column shows where a particular group ranks among the Top 100 by NPW.)

While AIG remains ensconced in the top 10 Groups, its decline in NPW "reflects our strategy to improve Commercial's underwriting results," the company said. "About half of the decline is related to the increased use of reinsurance and exits from highly unprofitable lines, mostly in U.S. casualty, where portfolio remediation efforts are most intensely focused." The remaining half, a spokesman added, "is related to improved risk selection and increased use of tools and analytics, which helped bring about the 4.1 point year-over-year improvement in our adjusted accident year loss ratio to 66.7 in financial year 2016, as mentioned. Our focus at AIG is on key growth areas that offer compelling value."

Allianz Group's percent decline in NPW is at least in part attributable to the fact that not all of its subsidiaries report their figures to the NAIC; its reported combined ratio, however, doesn't help, at 138.08.

This week and next, we'll continue to bring you a comprehensive look at the top performers in P&C, a look at the best (and worst) in industry combined ratios, and the top writers in several select P&C lines. (The entire Top 100 package is also featured in NU's July print edition.)

Readers can also check out our previous reports on the Top 100 P&C groups and Top 100 P&C Carriers, both ranked by net premiums written; you will note that the lists are searchable, allowing readers to easily find a specific group's or company's performance.

The S&P Global Market Intelligence data featured here is derived from all U.S. companies that file with the National Association of Insurance Commissioners (NAIC).

Special Reports /

P&C insurance group leaders & laggards: Best and worst in net premium growth

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