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Walmart Inc. is big in almost every way — 4,755 stores, 1.5 million employees and $380 billion in revenue in the United States alone. But one part of the world’s largest retailer remains minuscule. “We have a tiny ad business,” CEO Doug McMillon told investors in October. “It could be bigger.”

Efforts by dry van truckload carrier U.S. Xpress Enterprises to boost profits by improving the efficiency of its trucking operations are paying off.

Forward Air Corp. turned in its best-ever fourth quarter and full year in 2018 with profits topping expectations and revenue increasing across most of its freight service lines.

Old Dominion Freight Line Inc. on Feb. 7 reported strong fourth-quarter and full-year results.

Mullen Group reported higher revenue and profits in the fourth quarter of 2018 despite a “market meltdown” caused by falling oil prices that curtailed demand for transportation services as the year ended.

Werner Enterprises produced record revenue and higher profits in the fourth quarter of 2018 as a strong economy fueled demand for both its trucking and logistics services.

For-hire carrier ArcBest reported an increase in revenue but a decline in net income for the fourth quarter of 2018.

Patriot Transportation Holding, the Jacksonville, Fla.-based parent of Florida Rock & Tank Lines, reported higher profits and revenue in the first fiscal quarter of 2019.

USA Truck’s financial results for the fourth quarter of 2018 show progress in boosting the profitability of its trucking business while efforts continue to do the same for the company’s freight brokerage business unit.

In the midst of a strong U.S. economy, less-than-truckload carrier Saia Inc. reported record fourth-quarter earnings Feb. 4.