Knight Transportation Increases Stake in USA Truck to 11 Percent by Lance Turner Posted 9/30/2013 07:18 am Updated 4 years ago Knight Transportation of Phoenix says Monday that it has increased its ownership in outstanding shares of USA Truck Inc. of Van Buren to 11.3 percent. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 15 days. Purchase Now Already have archive access? Login to view this article.