KNSL vs ACGL

For growth investors, Kinsale Capital Group, Inc.

(KNSL) is the stronger pick with 18. 0% revenue growth year-over-year, versus 14. 3% for Arch Capital Group Ltd. (ACGL). Arch Capital Group Ltd. (ACGL) offers the better valuation at 8. 1x trailing P/E (10. 1x forward), making it the more compelling value choice. Analysts rate Arch Capital Group Ltd. (ACGL) a "Buy" — based on 34 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Arch Capital Group Ltd.

(ACGL) is the cheapest at 8. 1x versus Kinsale Capital Group, Inc. at 14. 0x. On forward P/E, Arch Capital Group Ltd. is actually cheaper at 10. 1x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Arch Capital Group Ltd. wins at 0. 35x versus Kinsale Capital Group, Inc. 's 0. 36x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Arch Capital Group Ltd.

(ACGL) delivered a total return of +150. 7%, compared to +81. 7% for Kinsale Capital Group, Inc. (KNSL). Over 10 years, the gap is even starker: KNSL returned +1578% versus ACGL's +325. 3%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Arch Capital Group Ltd.

(ACGL) is the lower-risk stock at 0. 02β versus Kinsale Capital Group, Inc. 's 0. 29β — meaning KNSL is approximately 1764% more volatile than ACGL relative to the S&P 500. On balance sheet safety, Arch Capital Group Ltd. (ACGL) carries a lower debt/equity ratio of 11% versus 11% for Kinsale Capital Group, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Kinsale Capital Group, Inc.

(KNSL) is pulling ahead at 18. 0% versus 14. 3% for Arch Capital Group Ltd. (ACGL). On earnings-per-share growth, the picture is similar: Kinsale Capital Group, Inc. grew EPS 21. 8% year-over-year, compared to 3. 8% for Arch Capital Group Ltd.. Over a 3-year CAGR, KNSL leads at 30. 7% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Kinsale Capital Group, Inc.

(KNSL) is the more profitable company, earning 26. 9% net margin versus 22. 1% for Arch Capital Group Ltd. — meaning it keeps 26. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: KNSL leads at 33. 8% versus 25. 0% for ACGL. At the gross margin level — before operating expenses — KNSL leads at 52. 5%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Arch Capital Group Ltd. (ACGL) is the more undervalued stock at a PEG of 0. 35x versus Kinsale Capital Group, Inc. 's 0. 36x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Arch Capital Group Ltd. (ACGL) trades at 10. 1x forward P/E versus 14. 7x for Kinsale Capital Group, Inc. — 4. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for KNSL: 42. 6% to $433. 00.

In this comparison, KNSL (0.

2% yield) pays a dividend. ACGL does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Kinsale Capital Group, Inc.

(KNSL) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 29), +1578% 10Y return). Both have compounded well over 10 years (KNSL: +1578%, ACGL: +325. 3%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: KNSL is a small-cap high-growth stock; ACGL is a mid-cap deep-value stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.