HIGHBuilt-inProduct / Revenue mix
79%
Standard Commercial Lines
“10-K Item 1: 'Standard Commercial Lines...79% of our 2025 total NPW'”
SIGI · Concentration risk · 10-K extracted
Selective Insurance Group (SIGI) concentration risks
Updated
The most significant concentration Selective Insurance Group discloses is Standard Commercial Lines at 79%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
Model-generated analysis — not investment advice. Not a registered investment advisor. Past performance does not guarantee future results.
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Source: Selective Insurance Group’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 3 disclosed concentrations
HIGH3
MEDIUM0
LOW0
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
HIGHOutside partyCustomer
51%
Aggregators
“10-K Item 1A: 'Aggregators accounted for approximately 51% of our DPW at December 31, 2025, up from 46% in the prior year'”
HIGHOutside partyCounterparty
specialty cyber markets
“10-K Item 1A: 'Our cyber-specific policies for commercial lines and personal lines customers are 100% reinsured with highly-rated specialty cyber markets'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-06-24The insurer's concentration profile spans product mix, distribution channel, and reinsurance counterparty. On the product side, Standard Commercial Lines generate 79% of total net premiums written, a high-share exposure that reflects the company's deliberate strategic focus — structural in character, not idiosyncratic. Shifting it would require repositioning the entire book, so it is better read as a defining feature than a near-term risk. The distribution channel dependence is more pointed. Aggregators accounted for approximately 51% of direct premiums written at year-end 2025, up from 46% in the prior year — a high-share, dependency-type exposure that has grown meaningfully in a single year. If aggregator economics shift, or if any major platform changes its algorithm or economics, the insurer loses pricing leverage over a majority of its new business flow. This is the exposure most worth monitoring. Layered on both is a cyber-specific reinsurance dependency: all cyber policies for commercial and personal lines customers are 100% reinsured with specialty cyber markets, a high-share counterparty arrangement. While this offloads underwriting risk, it introduces dependency on a concentrated set of reinsurers whose capacity and appetite could tighten in a stress event. Together, these three exposures reinforce rather than diversify one another.
For the engine’s reasoning on SIGI’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Insurance - Property & Casualty
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| SIGI● | Selective Insurance Group, Inc. | 3 | 0 | 0 | 3 |
| CNA | CNA Financial Corporation | 2 | 0 | 0 | 2 |
| AIZ | Assurant, Inc. | 1 | 2 | 0 | 3 |
| ALL | Allstate Corporation (The) | 1 | 0 | 0 | 1 |
| CB | Chubb Limited | 0 | 1 | 0 | 1 |
| AFG | American Financial Group, Inc. | 0 | 0 | 2 | 2 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.