CPK vs OGS: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 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: OGS 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. CPK and OGS 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 CPK and OGS 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.

Chesapeake Utilities Corporation (NYSE: CPK) delivers energy through two segments. Regulated Energy is the larger one: natural gas distribution in Delaware, Maryland and Florida, electric distribution in northwest Florida through Florida Public Utilities, and interstate and intrastate gas transmission through Eastern Shore Natural Gas and Peninsula Pipeline. Unregulated Energy covers Sharp Energy propane distribution, Aspire Energy gathering and processing in Ohio, and Marlin Gas Services, which trucks compressed natural gas and renewable natural gas to customers off the pipeline grid. The company employs roughly 1,300 people and generated ~$994 million of revenue over the trailing twelve months. Its 2023 purchase of Florida City Gas for ~$923 million roughly doubled the Florida gas footprint and reshaped where growth now comes from.

Full CPK guide

ONE Gas runs three regulated natural gas distribution utilities and nothing else: Oklahoma Natural Gas, Kansas Gas Service and Texas Gas Service, together serving roughly 2.3 million customers, about 92% of them residential. The company does not drill for gas, does not own long-haul pipelines, and does not sell electricity. It buys gas, delivers it, and passes the commodity cost through to customers at no markup. Earnings come instead from an allowed return on capital sunk into pipe, meters and regulators, an average rate base of about $6.4 billion in 2026. Terms are set state by state: allowed returns on equity near 9.4% in Oklahoma, 9.5% in Kansas and 9.8% in Texas, on equity layers around 60%. Roughly 70% of margin arrives as fixed customer charges, so a mild winter bruises results less than it once did.

Full OGS guide

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

• CPK drivers: Florida rate base after Florida City Gas; The Florida Energy Pathway pipeline.
• OGS drivers: Rate base growth, funded by a defined capital plan; Rate cases and the trackers that shorten regulatory lag.

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 capital program is large relative to the company's size, so financing terms are a live risk: higher interest costs or equity issued at unfavorable prices would dilute the per-share benefit of the same projects. For OGS, regulatory outcomes are the central risk: a commission can disallow spending, set a lower allowed return, or simply take long enough that the company under-earns on capital already deployed.

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 CPK if you believe its drivers more; OGS 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 CPK and OGS guides.

CPK. Second-quarter 2026 net income was ~$25.4 million, or ~$1.05 per diluted share, against ~$1.02 a year earlier, with year-to-date EPS of ~$3.51 versus ~$3.22 and adjusted EPS growth of ~8.0%. Adjusted gross margin rose ~$31.2 million, or ~9.6%, through June, driven by transmission projects and regulated infrastructure programs. Analyst consensus for full-year 2026 sits near ~$6.51 per share, and the reaffirmed 2028 range of ~$7.75 to ~$8.00 implies high-single-digit annual growth, which is what the above-peer multiple is priced on.

OGS. A sales multiple is close to meaningless here, since the commodity component of revenue is billed at cost and simply flows back out. Regulated gas distributors are compared on price to earnings against rate base growth and allowed ROE, and OGS at roughly 17 times trailing earnings sits in the normal band for the group. Total debt of about $3.4 billion against A3 and A- credit ratings, with adjusted cash flow to debt guided at 19% to 20%, is the other half of the valuation conversation.

Headline figures (approximate, August 2026): CPK shows revenue (ttm) ~$994 million, net income (ttm) ~$150 million, diluted eps (ttm) ~$6.27, p/e (trailing / forward) ~21x / ~19.5x; OGS shows revenue (ttm) ~$2.31B, heavily pass-through gas cost, net income / eps (ttm) ~$288M, ~$4.66 per diluted share, q2 2026 (reported august) adjusted net income ~$52.1M, ~$0.82 per share, GAAP ~$0.74, 2026 adjusted eps guidance ~$4.83 to ~$4.95, raised to the upper half.

CPK and OGS 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 CPK and OGS exposure against your real portfolio. It is not an investment adviser.