PLMR vs RLI: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: PLMR is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. PLMR and RLI share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined PLMR and RLI exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Palomar Holdings (NASDAQ: PLMR) is a specialty insurer that underwrites property and casualty risks across five product lines: Earthquake, Inland Marine and Property, Casualty, Fronting, and Crop, plus a fast-growing Surety and Credit business. It started as a residential and commercial earthquake specialist in catastrophe-exposed states like California and has since diversified into less catastrophe-correlated lines to smooth earnings. The company writes business directly and also acts as a fronting carrier, and it leans heavily on reinsurance to cap its exposure to large seismic and hurricane events.

Full PLMR guide

RLI Corp underwrites specialty property, casualty, and surety insurance in the United States, focusing on hard-to-place niche risks that standard carriers often avoid. It operates across the excess and surplus (E&S) and specialty admitted markets through three reportable segments: casualty (commercial excess, personal umbrella, general liability, transportation, and management liability), property (commercial fire, hurricane, earthquake, difference-in-conditions, and marine), and surety (specialty bonding). Its business is geographically broad within the US but not globally diversified, which gives it depth in domestic specialty lines while leaving it exposed to US legal, catastrophe, and economic conditions.

Full RLI guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• PLMR drivers: Broad-based premium growth; Strong underwriting margins.
• RLI drivers: Underwriting discipline and long profit streak; Rising net investment income.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The largest risk is catastrophe exposure: a major California earthquake or an active hurricane season could generate outsized losses despite reinsurance. For RLI, as a US-focused property and casualty insurer, RLI is exposed to catastrophe losses from hurricanes, earthquakes, and severe weather, which can cause quarter-to-quarter earnings swings.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick PLMR if you believe its drivers more; RLI if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the PLMR and RLI guides.

PLMR. Palomar has delivered roughly 14 consecutive quarterly earnings beats, with Q1 2026 adjusted EPS near $2.31 and adjusted net income around $63 million. The stock has traded roughly in the $108 to $132 range in 2026 and carries a premium multiple relative to many insurance peers, reflecting its above-average premium growth and high return on equity. Reported trailing P/E has been cited near the low double digits, while forward multiples on adjusted earnings sit modestly higher.

RLI. RLI traded near $61 per share in July 2026 for a market cap around $5.7 billion. Full-year 2025 comprehensive earnings were roughly $489 million (about $5.29 per share) on net premiums earned near $1.61 billion, and Q1 2026 net income was about $54.9 million ($0.83 per share). The shares typically command a premium price-to-book multiple versus other insurers, reflecting the company's long underwriting-profit record.

Headline figures (approximate, July 2026): PLMR shows revenue (ttm) ~$1.0B, q1 2026 revenue ~$279M (up ~60% YoY), q1 2026 gross written premium ~$630M (up ~42% YoY), 2026 adjusted net income guidance ~$266M to $280M; RLI shows revenue (ttm) ~$1.8B, net premiums earned (2025) ~$1.61B, combined ratio (2025) ~83.6, market cap ~$5.7B.

PLMR and RLI are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined PLMR and RLI exposure against your real portfolio. It is not an investment adviser.