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After years of ending the holiday shopping season with too much merchandise stacked in their warehouses, U.S. retailers face the opposite this year: They may not have enough.

September trailer orders spiked 86.2% from a year earlier and soared to the highest level in nearly a decade, ACT Research reported.

Swift Transportation Co. said its third-quarter net income climbed to $50.2 million, or 35 cents per share, from $30 million, or 21 cents, a year earlier.

Forward Air Corp.’s third-quarter net income rose to $16.7 million, or 54 cents a share, from $14.2 million, or 46 cents, a year ago.

For the first 42 weeks, U.S. intermodal volume has increased 5.4% from the same period last year, to 10.9 million units, the Association of American Railroads reported.

Universal Truckload Services Inc.’s third-quarter earnings slipped to $13.1 million, or 44 cents per share, from $13.7 million, or 46 cents, a year ago.

Hub Group Inc. said its third-quarter income declined due to driver-settlement and software-development charges.

Union Pacific Corp.’s third-quarter net income rose to $1.37 billion, or $1.53 per share, from $1.15 billion, or $1.24, during the same time last year.

Norfolk Southern Corp. said its third-quarter profit increased 16% and revenue rose 7%.

Secret changes by Trinity Industries Inc. to its guardrail systems were found by a jury to have cheated the U.S. government, exposing the company to $1 billion in liability and sending shares plummeting as states question the safety of the product.