ONEOK stock has delivered a strong 128.7% total return over the past five years, yet its current valuation checks paint a mixed picture that stops short of calling the shares either clearly cheap or clearly expensive.

• A 128.7% return over five years suggests ONEOK has already rewarded long term holders, so new investors need to think carefully about how much of that story may already be reflected in the price.
• Expectations around future earnings from its large midstream network can support today's valuation, while any disappointment in cash flow growth or capital spending efficiency may weigh on what investors are willing to pay.
• ONEOK scores 4 out of 6 on our valuation checks, which points to a mixed picture rather than a straightforward bargain or clear overvaluation.

The issue now is whether ONEOK's current price fairly reflects those past returns and future cash flow expectations, or if the valuation still leaves room for a better risk reward trade off.

Is ONEOK Still Cheap on Earnings?

The P/E multiple is a useful anchor for ONEOK because earnings remain a key focus for investors in midstream energy companies. ONEOK currently trades at about 16.4x earnings, which sits above the Oil and Gas industry average of roughly 14.3x but below the broader peer average of about 19.8x.

On a more tailored basis, the fair P/E ratio implied by ONEOK's profile is around 21.2x, so the stock trades at a discount to that level even after a strong run. Despite analyst expectations for solid Q2 2026 earnings per share, the current P/E still leaves a gap to this fair multiple. This suggests the market is not fully pricing in the earnings power implied by those forecasts.

Putting this together, ONEOK stock appears undervalued on its P/E multiple relative to what the fair ratio suggests investors might typically pay for these earnings.

The ONEOK Narrative: What Would Justify Today's Price?

Simply Wall St Narratives pick up where this valuation puzzle for ONEOK leaves off by spelling out which assumptions about the company’s future earnings, margins and growth would need to hold for the stock to be worth meaningfully more or less than today’s price. Each narrative treats ONEOK’s fair value as a specific thesis about the business that can be revisited over time, rather than a one off snapshot, and these sit on Simply Wall St’s Community page.

One of the top community narratives on ONEOK: roughly fairly valued

"Despite progress on debt reduction, recent major acquisitions add financial leverage and integration risk, and a weaker backdrop could pressure margins and capital allocation flexibility…"

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

The Bottom Line

For investors looking at ONEOK today, the key takeaway is that the stock screens as modestly undervalued on its P/E multiple, but the broader set of checks is only mixed rather than emphatically supportive. That makes the current price less of a clear bargain and more of a measured bet that the earnings profile and capital spending discipline will hold up well enough to justify a premium to the sector. The crux of the debate from here is whether ONEOK can convert its midstream footprint into steady, efficient cash generation without slipping into value trap territory if integration or leverage risks resurface.

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.