Donaldson Company (NYSE:DCI) is a leading manufacturer of air and liquid filtration systems, along with dust, fume, and mist collectors. The company serves a diverse range of markets including construction, mining, agriculture, trucking, along with other specialized applications with a focus on engine products. Donaldson has a long history of steady growth through a global expansion and acquisition strategy while also recognized for its 60-year history as a dividend payer. The stock has rallied in recent months, but we highlight a weaker-than-expected fiscal Q1 quarterly report with some soft operational trends which may