What Changed
Price Move History
- Daily moves over 5%
- 1 252 sessions, September 22, 2025 to September 22, 2026
- Largest daily move
- +8.8% close of April 23, 2026
- 1-year change
- +21.5% closing prices, September 22, 2025 to September 22, 2026
- 5-year change
- +38.5% closing prices, September 22, 2021 to September 22, 2026
Company Description
Union Pacific Corporation (NYSE: UNP) is a major U.S. freight railroad company in the line-haul railroads industry within the transportation and warehousing sector. According to company disclosures, Union Pacific delivers goods that families and businesses use every day with what it describes as safe, reliable and efficient rail service. The company operates in 23 western U.S. states and connects customers and communities to the global economy through its freight rail network.
Union Pacific states that trains are the most environmentally responsible way to move freight over land, and it positions its rail operations as helping to protect future generations by moving goods with lower emissions than many other transport modes. The company’s network spans the western two-thirds of the United States, and Polygon data indicates that Union Pacific operates on more than 30,000 miles of track in this region.
Based on Polygon’s description, Union Pacific hauls a broad mix of freight, including coal, industrial products, intermodal containers, agricultural goods, chemicals, fertilizers and automotive goods. This mix reflects the company’s role in supporting key parts of the U.S. economy, from energy and agriculture to manufacturing and consumer products. Polygon also notes that Union Pacific owns a stake in Mexican railroad Ferromex and has historically derived a portion of its revenue from hauling freight to and from Mexico, highlighting its cross-border connectivity.
Business model and operations
Union Pacific’s core business model centers on providing freight transportation services by rail. The company links producers, industrial facilities, distribution hubs and ports across its western U.S. footprint, and it emphasizes its ability to connect customers to global markets. Its operations include long-distance line-haul movements as well as service to industrial parks and regional gateways, as reflected in its announcement of the Mainline Texas Industrial Park, a master-planned industrial development along its main line near Houston that offers rail-served land and non-rail industrial and commercial sites.
The Mainline Texas Industrial Park illustrates how Union Pacific integrates rail infrastructure with industrial development. The park is described as being located along a Union Pacific main line with access to multiple highways and international gateways in Laredo, Eagle Pass and El Paso. The company highlights features such as rail car storage and on-site utility systems at the site, indicating how it supports customers that need large-scale industrial and logistics facilities connected directly to its rail network.
Strategic direction and proposed Norfolk Southern merger
Union Pacific has entered into an Agreement and Plan of Merger with Norfolk Southern Corporation, as disclosed in multiple Form 8-K filings. Under this agreement, and subject to regulatory approvals and other conditions, Norfolk Southern would become a wholly owned subsidiary of Union Pacific through a series of mergers. The companies have filed an application with the U.S. Surface Transportation Board (STB) requesting approval to combine the two railroads.
Union Pacific and Norfolk Southern describe this proposed transaction as creating what they call America’s first transcontinental railroad. The combination is characterized in company communications as an end-to-end merger that connects Union Pacific’s western network with Norfolk Southern’s eastern network. The companies state that the resulting system would offer single-line, coast-to-coast service across approximately 50,000 route miles, connecting 43 states and more than 100 ports, and providing access to international gateways in Canada and Mexico.
According to joint press releases and the STB application summary, the companies assert that the merger would transform many existing interline lanes into single-line service, reduce rail car handlings and car-miles, and compete more directly with long-haul trucking. They also highlight expected public benefits such as reduced highway congestion, lower emissions through shifting freight from trucks to rail, and expanded rail options in regions they describe as historically underserved by single-line rail service.
Union Pacific’s disclosures emphasize that the transaction remains subject to STB review and approval, as well as other customary closing conditions. The company’s filings and press releases include cautionary statements noting that there is no assurance the merger will close on the expected timeline or at all, and that various regulatory, legal and market factors could affect the outcome.
Labor relations and union commitments
Union Pacific is a unionized railroad and has highlighted agreements with several national rail unions in connection with the proposed Norfolk Southern merger. Press releases describe agreements with the International Brotherhood of Boilermakers, the Brotherhood of Railway Carmen, the International Association of Sheet Metal, Air, Rail and Transportation Workers – Transportation Division (SMART-TD), and the National Conference of Firemen and Oilers (NCFO).
These agreements, as described by the company and the unions, provide commitments that union employees at Union Pacific and Norfolk Southern at the time of the merger will have job security for life, subject to usual employment requirements. Union Pacific presents these arrangements as part of its pledge to protect union jobs in the context of the proposed coast-to-coast railroad and as a way to support what it describes as good-paying railroad careers.
Capital markets and shareholder base
Union Pacific’s common stock, with a par value of $2.50 per share, trades on the New York Stock Exchange under the ticker symbol UNP, as noted in its Form 8-K filings. The company has a long history of returning capital to shareholders through dividends and has stated in a press release that it has paid dividends on its common stock for more than a century. In connection with the proposed Norfolk Southern transaction, Union Pacific shareholders approved the issuance of new Union Pacific shares to Norfolk Southern shareholders at a special meeting, as detailed in a Form 8-K describing voting results.
The company’s SEC filings also note that share repurchases were paused under the terms of the merger agreement with Norfolk Southern, reflecting how major strategic transactions can affect capital allocation policies. Union Pacific regularly files Forms 10-K, 10-Q and 8-K with the SEC, providing financial, operational and transactional information to investors and regulators.
Governance and board composition
Union Pacific Corporation is incorporated in Utah and its securities filings identify it as the parent of Union Pacific Railroad Company, its principal operating subsidiary. The board of directors of the parent company and the railroad subsidiary overlap, with all company directors serving on both boards. A Form 8-K dated December 12, 2025, reports that the board elected W. Anthony Will as a director, and notes that he will serve on the Audit and Finance Committees and that the board determined he is independent under New York Stock Exchange listing standards and the company’s director independence standards.
The merger agreement with Norfolk Southern includes governance provisions stating that, upon completion of the mergers, three Norfolk Southern directors, including its current chief executive officer and current chair (subject to the company’s governance process), are expected to join the Union Pacific board. This reflects the company’s plan, as described in its filings, to integrate leadership representation from both railroads if the transaction closes.
Regulatory environment and disclosures
As a large U.S. railroad, Union Pacific operates in a heavily regulated environment. Its SEC filings and press releases reference oversight by the Surface Transportation Board, particularly in relation to the proposed Norfolk Southern combination. The company has filed a registration statement on Form S-4 that includes a joint proxy statement/prospectus for Union Pacific and Norfolk Southern shareholders, and it has disclosed that the STB application runs nearly 7,000 pages and includes detailed operating plans, market analysis and integration information.
Union Pacific’s communications about the merger and other corporate actions include extensive cautionary language regarding forward-looking statements. The company identifies a range of risks that could affect its performance and the outcome of the proposed transaction, such as economic conditions, competition in the geographic and business areas in which it operates, potential litigation related to the merger, regulatory approvals, and operational events on its network.
Role in freight transportation and the U.S. economy
Union Pacific positions itself as a key link in the U.S. supply chain, noting in multiple press releases that it connects customers and communities to the global economy. By hauling commodities such as coal, agricultural products, chemicals, fertilizers, industrial goods, intermodal containers and automotive freight, as described in Polygon’s summary, the company supports energy production, farming, manufacturing, retail distribution and other sectors.
The company’s public statements emphasize that rail is, in its view, the most environmentally responsible ground freight mode, and that shifting freight from trucks to trains can reduce congestion and wear on highways while lowering emissions. In the context of the proposed Norfolk Southern merger, Union Pacific and Norfolk Southern state that a transcontinental network could convert a significant number of truckloads from road to rail and improve access to ports and international gateways, though they also acknowledge in their filings that these expectations are subject to uncertainties and regulatory review.
Investment considerations
Investors evaluating Union Pacific stock can review its SEC filings, including its most recent Form 10-K and subsequent Forms 10-Q and 8-K, for detailed information on financial performance, risk factors, capital structure and the status of the proposed Norfolk Southern transaction. Company press releases and investor presentations, some of which are referenced in recent Form 8-K filings, provide additional context on strategic initiatives, network developments such as industrial parks, and management’s commentary on operations and market conditions.
Stock Performance
Union Pacific (UNP) closed at $274.41 on September 22, 2026. Over the past 12 months, the price has gained 21.5%.
UNP Metrics & Rankings
Price returns through September 22, 2026. Month-to-date and YTD include the first trading day. Ranking links may use different dates.
Latest News
Union Pacific has 10 recent news articles, with the latest published today. Of the recent coverage, 3 articles coincided with positive price movement and 6 with negative movement. Key topics include acquisition, dividends, earnings. View all UNP news →
SEC Filings
Union Pacific has filed 10 recent SEC filings, including 10 Form 4. The most recent filing was submitted on September 11, 2026. SEC filings provide transparency into a company's financial condition, material events, and regulatory compliance. View all UNP SEC filings →
Financial Highlights
Union Pacific generated $24.5B in revenue in FY2025, operating income reached $9.8B (40.2% operating margin), and net income was $7.1B, reflecting a 29.1% net profit margin. Diluted earnings per share stood at $11.98. The company generated $9.3B in operating cash flow. With a current ratio of 0.91, short-term liquidity bears monitoring.
Upcoming Events
Dividend Payable Date
Locomotive deliveries begin
Merger completion
Transcontinental merger close
Union Pacific has 4 upcoming scheduled events. The next event, "Dividend Payable Date", is scheduled for September 30, 2026 (in 6 days). 1 of the upcoming events are financial in nature, such as earnings calls or quarterly results. Investors can track these dates to stay informed about potential catalysts that may affect the UNP stock price.
Short Interest History
Short interest in Union Pacific (UNP) currently stands at 27.7 million shares, up 6.9% from the previous reporting period, representing 4.7% of the float. Since September 2025, short interest has increased by 61.2%. This relatively low short interest suggests limited bearish sentiment. With 10.8 days to cover, it would take significant time for short sellers to close their positions based on average trading volume.
Days to Cover History
Days to cover for Union Pacific (UNP) currently stands at 10.8 days, down 8.4% from the previous period. This elevated days-to-cover ratio indicates it would take over two weeks of average trading volume for short sellers to exit their positions, suggesting potential for a short squeeze if positive news emerges. The days to cover has increased 247.9% over the past year, indicating improving liquidity conditions. The ratio has shown significant volatility over the period, ranging from 3.1 to 12.5 days.
UNP Company Profile & Sector Positioning
Union Pacific (UNP) operates in the Railroads industry within the broader Industrials sector and is listed on the NYSE. Among dividend-paying stocks, UNP ranks #1,410 by dividend yield.
Investors comparing UNP often look at related companies in the same sector, including Norfolk Southern Corp. (NSC), CSX Corporation (CSX), Canadian Pacific Kansas City Limited (CP), Canadian National Railway (CNI), and Wabtec Inc. (WAB). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate UNP's relative position within its industry.