Industrial software company PTC (NASDAQ: PTC) and Rockwell Automation (NYSE: ROK) are strategic partners and share many of the same end-market drivers. When the industrials sector wants to invest in automation and the digital technology that drives it, both companies benefit, and when it pulls back, both companies suffer. Yet right now, PTC is a stock worth buying, while Rockwell is one to be avoided. Let's delve deeper and see why that's the case.

Rockwell Automation offers industrial automation, the software and controls that drive it, and consulting and services to help implement it. It's a complementary technology to the digital software solutions offered by PTC.

The latter's solutions help customers digitally design, control, and monitor a product's life cycle, from its inception to its servicing and disposal, within a so-called "digital loop."

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Source Fool.com