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

Same yardstick, side by side (as of August 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.

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. OGS and SR 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 OGS and SR 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.

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

Spire Inc. is a public utility holding company headquartered in St. Louis with roots going back to the 1850s. Its regulated distribution utilities (Spire Missouri, Spire Alabama, Spire Gulf, Spire Mississippi and Spire Tennessee) buy natural gas, move it through their own distribution and transmission pipelines, and sell it to residential, commercial and industrial customers under rates set by state commissions. A small Midstream segment holds pipeline and storage assets that serve the utilities. The company closed a ~$2.48 billion purchase of Duke Energy's Piedmont Tennessee local distribution business on March 31, 2026, adding more than 200,000 customers around Nashville and nearly 3,800 miles of pipeline, and it agreed in April 2026 to sell its smaller Mississippi utility to Delta Utilities for ~$75 million. Spire's fiscal year ends September 30, which matters when reading any trailing figure.

Full SR guide

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

• OGS drivers: Rate base growth, funded by a defined capital plan; Rate cases and the trackers that shorten regulatory lag.
• SR drivers: Rate base growth is the earnings engine; Tennessee is the newest and fastest-growing piece.

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: 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. For SR, regulatory outcomes drive nearly everything here: Alabama and Gulf RSE renewal hearings were held in August 2026 with requested returns on equity of ~10.5% to 10.75%, and Spire expects to make its first Missouri future test year rate case filing around November 2026, so an unfavorable order in either place would flow straight to earnings.

Pick OGS if you believe its drivers more; SR 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 OGS and SR guides.

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.

SR. At roughly $81 a share, SR trades near ~20 times the midpoint of fiscal 2026 adjusted guidance and closer to ~15 times the fiscal 2027 midpoint. Those two multiples describe different companies, because fiscal 2027 carries a first full year of Tennessee earnings plus the Missouri and Alabama rates that took effect during fiscal 2026, so anchoring on the trailing number overstates how expensive the shares look. Pure-play gas distributors have generally traded in the high teens to low twenties on forward earnings, which puts Spire inside its peer band rather than at either edge of it.

Headline figures (approximate, August 2026): 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; SR shows revenue (ttm) ~$2.7B, with ~$2.14B in the first nine months of fiscal 2026, adjusted eps guidance ~$3.90 to $4.10 for FY2026, ~$5.40 to $5.60 for FY2027, market cap ~$4.8B at a share price near ~$81, dividend ~$0.825 per quarter (~$3.30 annualized), ~4.1% yield, 23rd consecutive annual increase.

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