CSX, CPKC upgrade Southeast Mexico Express with dedicated train, faster transit times
CSX (NASDAQ: CSX) and CPKC upgraded the Southeast Mexico Express (SMX) premium service on May 4, 2026, cutting transit times across southeastern U.S. to Texas and Mexico by roughly 20–45%.
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Rhea-AI Summary
CSX (NASDAQ: CSX) and CPKC upgraded the Southeast Mexico Express (SMX) premium service on May 4, 2026, cutting transit times across southeastern U.S. to Texas and Mexico by roughly 20–45%. New schedule and routing deliver two-day Atlanta–Dallas service and faster options from Monterrey and central Mexico to Atlanta.
Improvements follow capital investments on the former MNBR and corridor upgrades in GA, AL, MS, LA and TX, and add origins including Charlotte, Jacksonville and central Florida.
Positive
- Transit times improved by approximately 20–45% across SMX options
- Atlanta–Dallas now offered as a two-day dedicated train service
- Faster Mexico connections: ~2.5 days faster between Atlanta and central Mexico
- Expanded origins: Charlotte, Jacksonville and Central Florida added
- Infrastructure investments on former MNBR and southeastern corridor
Negative
- None.
Details
News Market Reaction – CSX
On May 6, the day this news came out, CSX closed 1.27% above the previous close.
Data tracked by StockTitan Argus for the May 6 session.
Key Figures
- Current price
- $45.03
- Pre-news market context for CSX
- 52-week range
- $28.045–$46.55
- CSX trading 3.27% below 52-week high
- SMX Atlanta–Dallas
- 2 days
- New SMX dedicated train service transit time
- SMX Monterrey–Atlanta
- 3 days
- New SMX dedicated train service transit time
- SMX central Mexico–Atlanta
- 4 days
- New SMX dedicated train service transit time
- Transit time improvement
- 20–45%
- SMX transit time reduction versus prior schedule
- Trucks replaced per train
- 300 semi-trucks
- Environmental benefit of SMX service
- Vanguard ownership
- 7.52%
- Schedule 13G beneficial ownership of CSX common stock
Historical Context
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CSX highlighted competition concerns around the proposed UP–NS merger.
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Q1 2026 results showed higher revenue, earnings, and volume versus prior year.
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Announcement of Q1 2026 earnings release timing and conference call details.
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Added 21 rail-served properties to CSX Select Site development program.
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Commercial chief scheduled to speak at a major industrials investor conference.
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Key Terms
intermodal technical
carload technical
interchange technical
AI-generated analysis. How Rhea-AI works. Not financial advice.
Direct connection links U.S Southeast to Texas and Mexico markets
JACKSONVILLE, Fla., May 06, 2026 (GLOBE NEWSWIRE) -- CSX Corp. (NASDAQ: CSX) and Canadian Pacific Kansas City (TSX:CP) (NYSE:CP) (CPKC) today announced upgrades to the Southeast Mexico Express (SMX) premium service featuring faster transit times with more origin and destination options for customers looking to reach new markets.
The new SMX premium service schedule and routing options launched May 4, 2026, offer industry-best, truck-competitive transit times between southeastern markets such as Atlanta, Charlotte or central Florida, and markets in Texas and Mexico, including Dallas and Monterrey. The service improvements have reduced transit times for every previously available SMX option. These reductions range from approximately one-day-faster service between Atlanta and Dallas, and approximately 2.5 days faster between Atlanta and central Mexico. SMX improvements are the result of capital investments in track, bridges and signal infrastructure on the former Meridian & Bigbee Railroad (MNBR) and continued investments across the corridor in Georgia, Alabama, Mississippi, Louisiana, and Texas offering greater speeds and more efficiency.
“These service upgrades, providing approximately 20 to 45 percent improvement to SMX transit times, reflect our ongoing commitment to providing more best-in-class, flexible transportation solutions to our customers looking for innovative ways to reach new markets,” said Keith Creel, CPKC President & CEO. “Together with CSX, the SMX offers a level of speed, flexibility and dependability that reaches additional growing markets in the U.S. Southeast. This is a premium rail solution that cannot be replicated because we have the best route linking shippers to Texas and to Mexico that will move more trucks to rail.”
“The upgraded SMX service demonstrates the long-term investments CSX has made to strengthen this corridor and provide more consistent, reliable service for our customers,” said Steve Angel, president and CEO of CSX. “By working closely with CPKC, we’re expanding access and delivering meaningful improvements for shippers moving freight between the key markets of the Southeast U.S. and Mexico.”
The new SMX dedicated train service provides two-day service between Atlanta and Dallas, with three-day service from Monterrey and four-day service from central Mexico to Atlanta. Customers can extend their reach with new SMX origins and destinations in Charlotte, Jacksonville and Central Florida.
CSX and CPKC debuted the SMX in December 2024 creating rail transportation routing options with available capacity along this east-west corridor for customers looking to reach Texas and Mexico from the U.S. Southeast. The connection came out of the two Class I’s respective acquisitions of portions of the former MNBR. As a result, CPKC and CSX established a direct Class I-to-Class I interchange near Myrtlewood, Alabama.
Schneider National, Inc. (NYSE:SNDR), a premier multimodal provider of transportation, intermodal and logistic services, has already experienced the SMX advantage and looks forward to building on its earlier success in the corridor.
“Schneider has seen firsthand the value of continued collaboration with our railroad partners in bringing new, innovative intermodal products to market,” said Schneider President and CEO Mark Rourke. “The enhanced Southeast Mexico Express delivers more reliable and truck-like service, making it an attractive option for shippers looking to move freight between Texas, Mexico and the Southeastern United States. There is strong demand in these lanes, and the upgrades further strengthen rail’s ability to compete with trucks on speed and consistency while offering customers greater capacity and efficiency.”
SMX gives intermodal, automotive and carload customers truck-competitive transit times, greater capacity, and environmentally sustainable rail solutions.
Advantages of SMX include:
- Direct connectivity: Links to Mexico, Texas and U.S. Southeast.
- Market access: Expanded connectivity to diverse origin points across North America.
- Faster transit times: Improved time and cost efficiency supported by infrastructure upgrades.
- Secure transportation: Advanced technology expedites border crossings while enhancing shipment security.
- Environmental sustainability: Replaces up to 300 semi-trucks per train, reducing emissions.
The combined strength of CSX and CPKC through SMX continues to meet evolving customer demands and set new standards in North American freight.
About CSX
CSX, based in Jacksonville, Florida, is a premier transportation company. It provides rail, intermodal and rail-to-truck transload services and solutions to customers across a broad array of markets, including energy, industrial, construction, agricultural and consumer products. For nearly 200 years, CSX has played a critical role in the nation’s economic expansion and industrial development. Its network connects every major metropolitan area in the eastern United States, where nearly two-thirds of the nation’s population resides. It also links more than 240 short-line railroads and more than 70 ocean, river and lake ports with major population centers and farming towns alike. More information about CSX Corporation and its subsidiaries is available at www.csx.com. Like us on Facebook and follow us on X, formerly known as Twitter.
About CPKC
With its global headquarters in Calgary, Alta., Canada, CPKC is the first and only single-line transnational railway linking Canada, the United States and México, with unrivaled access to major ports from Vancouver to Atlantic Canada to the Gulf Coast to Lázaro Cárdenas, México. Stretching approximately 20,000 route miles and employing approximately 20,000 railroaders, CPKC provides North American customers unparalleled rail service and network reach to key markets across the continent. CPKC is growing with its customers, offering a suite of freight transportation services, logistics solutions and supply chain expertise. Visit cpkcr.com to learn more about the rail advantages of CPKC. CP-IR
Contact:
CSX
Matthew Korn, CFA, Investor Relations
904-366-4515
Austin Staton, Corporate Communications
mediateam@csx.com
CPKC
Chris De Bruyn
403-319-3591
investor@cpkcr.com
Terry Cunha
mediarelations@cpkcr.com
FAQ
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