3 Reasons UNP is Risky and 1 Stock to Buy Instead

September 08, 2025 at 00:04 AM EDT

UNP Cover Image

Over the last six months, Union Pacific’s shares have sunk to $221, producing a disappointing 11% loss - a stark contrast to the S&P 500’s 15.5% gain. This may have investors wondering how to approach the situation.

Is now the time to buy Union Pacific, or should you be careful about including it in your portfolio? Check out our in-depth research report to see what our analysts have to say, it’s free.

Why Do We Think Union Pacific Will Underperform?

Even with the cheaper entry price, we're cautious about Union Pacific. Here are three reasons why UNP doesn't excite us and a stock we'd rather own.

1. Weak Sales Volumes Indicate Waning Demand

Revenue growth can be broken down into changes in price and volume (the number of units sold). While both are important, volume is the lifeblood of a successful Rail Transportation company because there’s a ceiling to what customers will pay.

Over the last two years, Union Pacific’s units sold averaged 2.7% year-on-year growth. This performance was underwhelming and suggests it might have to lower prices or invest in product improvements to accelerate growth, factors that can hinder near-term profitability. Union Pacific Units Sold

2. EPS Barely Growing

We track the long-term change in earnings per share (EPS) because it highlights whether a company’s growth is profitable.

Union Pacific’s EPS grew at an unimpressive 7.3% compounded annual growth rate over the last five years. On the bright side, this performance was better than its 3.8% annualized revenue growth and tells us the company became more profitable on a per-share basis as it expanded.

Union Pacific Trailing 12-Month EPS (Non-GAAP)

3. Free Cash Flow Margin Dropping

Free cash flow isn't a prominently featured metric in company financials and earnings releases, but we think it's telling because it accounts for all operating and capital expenses, making it tough to manipulate. Cash is king.

As you can see below, Union Pacific’s margin dropped by 3.9 percentage points over the last five years. It may have ticked higher more recently, but shareholders are likely hoping for its margin to at least revert to its historical level. If the longer-term trend returns, it could signal increasing investment needs and capital intensity. Union Pacific’s free cash flow margin for the trailing 12 months was 12.5%.

Union Pacific Trailing 12-Month Free Cash Flow Margin

Final Judgment

Union Pacific falls short of our quality standards. After the recent drawdown, the stock trades at 18.1× forward P/E (or $221 per share). While this valuation is reasonable, we don’t see a big opportunity at the moment. There are better investments elsewhere. We’d recommend looking at one of our top software and edge computing picks.

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