Caterpillar shares rose 58% over the past year, fueled by tariffs that curb cheap Chinese imports and boost domestic demand. The company, a top producer of construction and mining equipment, gained from expanded Section 232 tariffs on steel and aluminum, which doubled to 50% by June and extended to machinery components. This limited competition from Chinese firms like Sany allowed Caterpillar to hold market share in earthmoving gear. CEO Joe Creed noted on Caterpillar's second-quarter earnings call that tar ...