Viasystems Group Inc. says it has completed its purchase of Merix Corp. in a deal that gives St. Louis one more publicly-traded company.
Viasystems, based in Clayton, was privately held. Beaverton, Ore.-based Merix was public. The merged company began trading Wednesday on the Nasdaq stock exchange under the ticker symbol VIAS. The stock closed at $21.99.
The companies are in the printed circuit board business, making the basic backbones for most electronic equipment…