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Realty Income (O) Stock Could Be 49% Undervalued On $1.625B Notes

Simply Wall St·09/04/2026 13:34:18
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Realty Income presents an unusual setup for investors right now. The stock has delivered a solid multi year gain, yet the Discounted Cash Flow (DCF) intrinsic value estimate points to meaningful upside while earnings based multiples suggest the shares already look expensive.

  • Over the past 3 years, Realty Income has returned about 32.4%, which puts recent valuation questions in the context of a stock that has already rewarded patient holders.
  • The recent issue of US$1.625b of convertible senior notes may support Realty Income's ability to fund its investment pipeline, although the added equity linked debt could weigh on valuation if investors focus more on dilution and balance sheet risk.
  • The broader checks lean on the expensive side for Realty Income, with the stock scoring 2 out of 6 on value even though the DCF estimate screens it as undervalued by about 49.2%.

The issue now is whether Realty Income's current price already reflects its long term cash flow potential, or still leaves a margin between market price and intrinsic value.

Compare Realty Income's setup with a curated list of other companies that combine income potential and perceived valuation gaps by reviewing 11 dividend fortresses.

Is Realty Income Still Cheap on Cash Flow?

The Discounted Cash Flow (DCF) model here uses adjusted funds from operations to estimate what Realty Income’s future cash generation could be worth today. In this view, the latest twelve month free cash flow of about $3.89b is treated as a base that continues to grow over time, which aligns with the two stage free cash flow to equity setup used in the model.

Those cash flow projections convert into an estimated intrinsic value of about $121 per share, which suggests the stock appears undervalued by roughly 49.2% compared with the current market price. The recent issue of $1.625b of convertible senior notes helps explain why some investors may be cautious, because the equity linked structure can dilute future per share cash flows even though it provides additional funding flexibility.

On this Discounted Cash Flow view, Realty Income appears undervalued relative to what its projected cash flows suggest.

Our Discounted Cash Flow (DCF) analysis suggests Realty Income is undervalued by 49.2%. Track this in your watchlist or portfolio, or discover 52 more high quality undervalued stocks.

O Discounted Cash Flow as at Sep 2026
O Discounted Cash Flow as at Sep 2026

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Realty Income.

Has Realty Income Run Too Far on Earnings?

The P/E ratio is a useful way to think about Realty Income because it connects what you pay today with the earnings the portfolio of properties is currently generating. Realty Income trades on a P/E of about 45.9x, which is well above the Retail REITs industry average of about 28.0x and higher than the broader peer group average of about 27.5x.

The tailored fair P/E for Realty Income is about 36.9x, which already reflects its sector, size and risk profile. The current 45.9x multiple therefore sits meaningfully above that level, indicating that investors are paying a premium relative to what this framework implies. That premium comes on top of the recent issuance of US$1.625b of convertible notes, which may keep attention on how much optimism is already embedded in the earnings multiple.

On this earnings-based yardstick, Realty Income stock appears overvalued relative to both its fair P/E and typical Retail REIT peers.

NYSE:O P/E Ratio as at Sep 2026
NYSE:O P/E Ratio as at Sep 2026

See what the numbers say about this price — find out in our valuation breakdown.

The Realty Income Narrative: What Would Justify Today's Price?

Simply Wall St Narratives for Realty Income pick up where this valuation puzzle leaves off. They spell out which assumptions about Realty Income's future growth, margins and earnings would need to be true for the stock to be worth materially more or less than today's price. Each narrative ties a fair value to a particular mix of potential catalysts and risks so you can see which version of the story is unfolding over time on the Community page.

One of the top community narratives on Realty Income: 13% undervalued

"Please remember that the fair value estimate has a 100% probability of being wrong and it will never be a precise number, even if it has decimals next to it…"

Read one of the top narratives on Realty Income

Do you think there's more to the story for Realty Income? Head over to our Community to see what others are saying!

The Bottom Line

Realty Income leaves you with a split message. The Discounted Cash Flow (DCF) intrinsic value estimate points to meaningful upside, while the P/E based view screens the stock as overvalued relative to peers and its tailored fair multiple. Broader checks are not especially strong, so the cash flow signal has to be weighed against richer earnings expectations and the impact of recent convertible debt funding. The key question from here is whether Realty Income can translate its funding and portfolio into cash flows that justify both the intrinsic value estimate and the premium multiple investors are currently paying.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.