What happened Shares of Atkore (NYSE: ATKR), a manufacturer with an eclectic collection of electrical, safety, and infrastructure products, rose a touch over 14% at one point in morning trading Monday. Management also noted that, despite the difficult operating market (likely the inflation and supply chain issues impacting just about every company), Atkore was able to increase margins in both of its divisions. It also announced the completion of the integration of two acquisitions, Sasco Tubes & Roll Forming and Four Star Industries, which together added new capabilities to the company's portfolio.