KNSL — Kinsale Capital Group: The E&S Underwriter Compounding at 26% ROE

Current price: ~$305 | Trailing P/E: ~17.8x | P/FCF: ~7.1x | Market cap: ~$7.0B

Kinsale Capital Group (NYSE: KNSL) is a Richmond, VA-based specialty insurer that writes exclusively in the excess and surplus lines (E&S) market — the segment of US property and casualty insurance reserved for risks that standard carriers won't touch. Distressed commercial real estate, emerging tech liability, wildfire-exposed properties: all end up on Kinsale's desk. That niche has produced a compound earnings record few insurers can match, and its stock is now trading near a three-year low P/E after a 35% drawdown from its 2025 peak.

The three-screen result

3-Year Trailing ROE

~26%

FCF Margin

53%

Trailing P/E

17.8x

Combined Ratio FY2025

75.9%

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3-year trailing ROE: Kinsale has posted ROE at or above 26% in each of the past three fiscal years, driven by a combination of underwriting discipline and rapidly growing investment income. 1 Stockholders' equity grew from $1.5B to $2.0B between end-2024 and end-2025, a 33% expansion in book value per share (from $63.75 to $84.66). 2

Positive free cash flow: FCF margin came in at 53% of revenue as of the most recent screen, giving a P/FCF of just 7.1x — low for a business compounding book value this fast. 3

Reasonable valuation: The stock closed at approximately $303–$305 on May 30, 2026, putting it at ~17.8x trailing earnings. 4 Over the prior three years it traded as high as 37–38x earnings; today's multiple represents a ~50% compression from that 2023–2024 range. The GF Value estimate on GuruFocus sits at $571, compared to current prices near $305, which the platform classifies as "significantly undervalued." 5

What drives the moat

The combined ratio is the central profitability metric for property and casualty insurers: it measures losses and expenses as a percentage of earned premiums, and anything below 100% means the underwriting operation itself made money. For most P&C insurers, a combined ratio in the low 90s is considered good.

Kinsale ran a combined ratio of 75.9% for full-year 2025 — roughly 20 percentage points below the US industry average of ~97%. 6 That gap is not luck; it has been consistent. Over the past decade, the combined ratio never exceeded 86%, with a 10-year average near 78%. 7

Three structural factors keep the ratio low:

Proprietary technology. Kinsale built its own integrated underwriting platform and data warehouse from scratch. The platform enforces pricing discipline at the point of submission, captures loss data in real time, and enables faster quote turnaround than competitors relying on legacy systems. Management considers it a durable advantage. 7
Small-account focus. Kinsale concentrates on smaller, less-competed E&S accounts where data is thin and standard carriers retreat entirely. Fewer competitors bidding on the same risk means Kinsale can price to a higher margin.
Expense ratio discipline. Kinsale's total expense ratio for 2025 was 20.8%, well below the industry average for E&S carriers — an advantage that compounds through the combined ratio every single year. 6

Earnings trajectory

Year	Diluted EPS	YoY growth
2023	$13.22	+92%
2024	$17.78	+35%
2025	$21.65	+22%
Q1 2026	$4.88 (qtr)	+27% YoY

Sources: 8 9

ir.kinsalecapitalgroup.comhttps://ir.kinsalecapitalgroup.com/news/news-details/2026/Kinsale-Capital-Group-Reports-First-Quarter-2026-Results/default.aspx外部链接

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The growth rate is decelerating — from triple-digits in 2023 to the low-to-mid 20s now — but this was expected as the hard E&S market began normalizing. Q1 2026 showed re-acceleration to 27% EPS growth year-over-year, beating analyst consensus of $4.68 per share by 9.3%. 10

The float — the investable premiums held before claims are paid — grew to $3.1B in 2025, up 23% year-over-year. Net investment income from that float rose 27.9% to $192.2M, meaning Kinsale now earns meaningful returns on capital before a single claim is filed. 6

Valuation context

The stock has fallen roughly 35% from its 2025 peak near $485, primarily because premium growth in Kinsale's largest segment — commercial real estate — slowed significantly as the E&S market softened. Gross written premiums in that segment fell 17.9% in 2025. 6 The market re-rated the stock from a growth multiple to something closer to a mature insurer.

grilloinsights.substack.comhttps://grilloinsights.substack.com/p/kinsale-capital-group-when-the-market外部链接

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Metric	KNSL today	Insurance industry median
Trailing P/E	~17.8x	~12–14x
P/FCF	~7.1x	~15–20x
Combined ratio	75.9%	~97%
ROE (3-yr)	~26%	~10–12%

The P/E sits modestly above the industry median — a premium that has historically been justified by Kinsale's outsized ROE. The P/FCF of 7.1x, however, looks materially cheap for a company with this cash generation profile. For context, Mastercard (MA) trades at 25.7x P/FCF and Visa (V) at 29x P/FCF; even the more directly comparable specialty insurer W.R. Berkley (WRB, William R. Berkley Corporation, a specialty and admitted lines insurer) carries a higher P/FCF than Kinsale's current level.

Risks

Soft E&S market persisting longer than expected. Commercial real estate premiums dropped sharply in 2025 as claims frequency normalized post-2023 hard market. If the soft cycle extends into 2026–2027, gross written premium growth could stay below 10% annually for multiple quarters — placing downward pressure on float growth and investment income. No precise estimate of impact is publicly available, but a further 10% GWP decline in commercial real estate could reduce 2026 underwriting income by $15–25M based on the segment's 2025 size.

Valuation premium still present vs. peers. At 17.8x trailing earnings, Kinsale carries a P/E above the 12–14x sector median. The justification is its superior ROE; if ROE compresses toward 20% (still above the 15% screen threshold), that premium narrows further. Investors paying today's price are implicitly betting ROE stays elevated.

Key-man risk. CEO Michael Kehoe co-founded Kinsale in 2009 and has been the architect of its tech-forward underwriting culture. His departure or reduced involvement would raise questions about execution continuity that the market would likely price harshly given the stock's elevated historical multiple.

Opportunity-risk structure

The valuation compression story here is clean: a business that has compounded book value at 33% in one year, consistently run one of the best combined ratios in US P&C insurance, and just beat Q1 2026 estimates by 9% is trading at the lowest P/E in three years. The bear case rests on premium growth staying slow — which is a market-cycle risk, not a structural one. The two things that would change the setup are (1) GWP growth re-accelerating back above 15% in Q2–Q3 2026 as the commercial real estate market rebalances, or (2) ROE evidence that underwriting margin is actually deteriorating rather than just growing more slowly. The Q3 2026 earnings report (expected October 2026) will be the first clean read on whether the deceleration is cyclical or structural.

This article is for informational purposes only and does not constitute investment advice. All data sourced from public filings and financial data providers. Analyst targets and screener scores referenced here carry no guarantee of forward performance.