O vs ONL: Which Is the Better Buy in 2026?

Last updated October 2026

Short answer

O is the larger of the two ($53.06B market cap): the incumbent the market prices for continued execution (36.11x forward earnings, beta 0.70). ONL is the smaller challenger ($117.51M), priced similarly on forward earnings (-7.92x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.

O vs ONL: the tie-breaker metrics

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.

Metric	O	ONL	What it tells you
Market cap	$53.06B	$117.51M	Size. The larger name is the incumbent; the smaller has more room to grow and more to prove.
Forward P/E	36.11	-7.92	Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up.
Beta	0.70	1.61	Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through.
Price vs 52-week range	20% of range	15% of range	Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why.
Price / book	1.34	0.19	How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price.

Before you buy: how O and ONL affect your concentration

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. O and ONL 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 O and ONL 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.

What does Realty Income Corporation (O) do?

Realty Income Corporation (NYSE: O), founded in 1969 and headquartered in San Diego, California, is a real estate investment trust that acquires, owns, and manages freestanding, single-tenant commercial properties leased under long-term triple-net agreements. Under a triple-net lease, tenants bear property taxes, insurance, and maintenance costs, making revenue highly predictable; rental income forms over 99% of total revenue. As of Q1 2026, the portfolio spanned more than 15,600 properties leased to approximately 1,600 clients across 92 industries in all 50 U.S. states, the United Kingdom, and seven other European countries. Top tenants include essential and service-oriented businesses such as Walgreens, Dollar General, Dollar Tree, FedEx, Walmart, and CVS, which are considered relatively resistant to e-commerce disruption. The company earns its return by purchasing properties at cap rates meaningfully above its cost of capital and collecting contractual rent escalators over weighted average remaining lease terms of roughly nine years.

Full O guide

What does Orion Properties Inc. (ONL) do?

Orion Properties Inc. (NYSE: ONL), renamed from Orion Office REIT in 2025, is an internally managed real estate investment trust headquartered in Phoenix. It was spun off from Realty Income in November 2021 with the net lease office buildings that Realty Income no longer wanted. As of June 30, 2026 it owned 57 operating properties generating ~$108 million of annualized base rent, with ~69% from investment-grade tenants. The largest tenant is the U.S. General Services Administration (~18% of rent at year-end 2025), followed by Merrill Lynch, Ingram Micro, Cigna/Express Scripts and T-Mobile. Management's stated strategy is to tilt the portfolio away from traditional office and toward dedicated use assets (labs, government, medical and flex/industrial buildings), which made up ~39% of rent at mid-2026.

Full ONL guide

O vs ONL: how do they differ?

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

O drivers: Monthly dividend compounding with a 30-plus year growth streak; Accelerating global acquisition pipeline at attractive spreads.
ONL drivers: Leasing momentum and occupancy recovery; Asset sales and deleveraging.

Which fits which kind of investor

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: Interest rate sensitivity is the primary structural risk: O's share price is materially affected by movements in Treasury yields because investors compare its dividend yield against risk-free alternatives, and rising rates also increase borrowing costs that narrow acquisition spreads. For ONL, the central risk is that suburban office demand stays weak and Orion cannot re-lease space at rents that cover its costs.

O or ONL: which should you pick?

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 O if you believe its drivers more; ONL 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 O and ONL guides.

O vs ONL: the full fundamentals

O. REITs are most meaningfully valued on AFFO rather than GAAP earnings, because depreciation charges make net income a poor proxy for cash generation; at ~$56.13 in mid-October 2026, O trades near ~12.7x the midpoint of its 2026 AFFO guidance, cheaper than the ~14x of late June. The ~5.9% dividend yield is among the highest O has offered in the past decade, and it comes from share-price compression rather than any cut, since the dividend was raised again in September 2026. The ~$9.5 billion 2026 investment target, new convertible debt and the KKR joint venture show management leaning into acquisitions, which increases sensitivity to capital market access; third-quarter results on November 2, 2026 will update both AFFO and investment guidance.

ONL. Revenue (TTM) combines the first half of 2026 (~$70.6 million) with the second half of 2025 (~$72.3 million). On a Core FFO basis Orion trades at under 3x guided 2026 earnings, a fraction of the ~10x to 15x common for healthier net lease REITs. That gap reflects the debt load, ~78% occupancy, the joint venture default and doubts about the terminal value of older suburban office buildings. GAAP earnings are noisy because of property sale gains and impairments, so price to earnings is not a useful yardstick here. Figures are approximate, drawn from Orion's second quarter 2026 filings and mid-October quotes.

Headline figures (approximate, October 2026): O shows revenue (ttm) ~$6.07 billion; Q2 2026 revenue ~$1.43 billion, up ~9.6% YoY, net income (ttm) ~$1.27 billion; Q2 2026 GAAP EPS ~$0.37 vs ~$0.42 consensus, affo per share (fy 2025) ~$4.28; 2026 guidance $4.41 to $4.44 as of the Q1 2026 report, margins Operating margin ~47%, net margin ~21% (trailing); ONL shows revenue (ttm) ~$143 million, core ffo per share (2026 guidance) ~$0.72 to $0.77, price / core ffo (guidance midpoint) ~2.8x, market cap ~$118 million (~$2.06/share).

The bottom line: O vs ONL

O and ONL 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 O and ONL exposure against your real portfolio. It is not an investment adviser.

Wondering how O or ONL fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.

Investing in Realty Income Corporation with AI

Connect the broker you already use and ask Walnut's AI how O fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.

Does O fit me?

FAQ

What is the difference between O and ONL?

Is O or ONL the better stock?

Neither is universally better. O is the larger incumbent; ONL is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.

Which is cheaper, O or ONL?

On forward P/E (as of October 2026), O trades at 36.11x and ONL at -7.92x, so ONL is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.

Should you own both O and ONL?

Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.

What are the risks of O vs ONL?

O: Interest rate sensitivity is the primary structural risk: O's share price is materially affected by movements in Treasury yields because investors compare its dividend yield against risk-free alternatives, and rising rates also increase borrowing costs that narrow acquisition spreads. Tenant credit quality is a secondary concern, as a portion of credit losses has been traced to tenants acquired through recent M&A transactions, and retail bankruptcies or store-closure programs could pressure occupancy below its historically stable 98-plus percent level. Currency risk is growing as European investments expand, with local-currency debt only partially hedging revenue exposure. The stock trades at a GAAP P/E of roughly 41x (as of mid-October 2026), a premium to the broader REIT sector, and its share price fell ~13.6% over the three months to October 16, 2026, meaning any disappointment in AFFO growth or guidance could weigh disproportionately on share price. ONL: The central risk is that suburban office demand stays weak and Orion cannot re-lease space at rents that cover its costs. With occupancy near ~78%, more vacancies would hit revenue directly while the company still pays taxes, insurance and maintenance on empty buildings, and leasing often requires heavy spending on tenant improvements and commissions. Tenant concentration is meaningful: the General Services Administration provided ~18% of rent and Merrill Lynch ~10% at year-end 2025, so a single non-renewal can dent results. Leverage magnifies all of this. About ~$437 million of debt sits under an equity value of roughly ~$118 million; the revolver floats with interest rates and matures in February 2028 (extendable to 2029), and the CMBS loan matures in February 2029. Orion's 20%-owned Arch Street joint venture defaulted on ~$125.6 million of non-recourse debt, and lenders have signalled they may force property sales, which could wipe out Orion's equity and ~$5.5 million member loan there. Asset sales may close below book value, impairments have been frequent, the dividend is only $0.02 per quarter, and the strategic review may end without any transaction.

Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell O or ONL; figures are approximate and dated (as of October 2026). Verify current data before investing.