Union Pacific (UNP) has released its fourth quarter 2025 results, reporting revenue of US$6,085 million, net income of US$1,848 million, and diluted earnings per share from continuing operations of US$3.11.

At a share price of US$232.55, Union Pacific has seen a 7-day share price return of 4.9% and a 90-day share price return of 7.5%. The 1-year total shareholder return of a 4.4% decline contrasts with positive 3- and 5-year total shareholder returns of 22.2% and 26.3%, suggesting shorter term momentum has picked up even as longer term investors have seen more moderate gains.

If earnings and merger headlines have you reassessing rail stocks, it can also be a good moment to broaden your search with aerospace and defense stocks for other transport linked opportunities.

With earnings per share moving higher even as revenue was slightly lower and the stock trading at a discount to some valuation estimates, you have to ask: Is Union Pacific quietly undervalued here, or is the market already pricing in future growth?

Most Popular Narrative: 11.6% Undervalued

Union Pacific's most followed narrative pegs fair value at about $263 per share, compared with the recent close of $232.55, putting a spotlight on the gap between model and market.

The Fair Value Estimate has risen slightly from about US$260.24 to roughly US$263.21 per share. The future P/E has been set higher, moving from about 21.81x to roughly 22.11x, indicating a modestly richer multiple in the updated framework.

If you want to see what sits behind that higher fair value, the narrative walks through steady top line expansion, firm margins and a richer earnings multiple that still stays below the wider transportation pack. Curious which assumptions matter most in lifting the target and how sensitive the story is to small changes in growth and discount rate inputs?

Result: Fair Value of $263 (UNDERVALUED)

However, that gap between fair value and price could close quickly if regulatory scrutiny around the Norfolk Southern merger tightens further or if freight demand softens from here.

Build Your Own Union Pacific Narrative

If you see the numbers differently or prefer to follow your own trail of evidence, you can build a fresh narrative in just a few minutes, starting with Do it your way.

A great starting point for your Union Pacific research is our analysis highlighting 4 key rewards and 1 important warning sign that could impact your investment decision.

Looking for more investment ideas?

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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.