https://www.reuters.com/article/us-ptc-stake-rockwell-automat/rockwell-to-take-1-billion-stake-in-software-maker-ptc-idUSKBN1J712V >Factory automation equipment maker Rockwell Automation said on Monday it would buy an 8.4 percent stake in PTC for $1 billion as it looks to build on its software capabilities to make smarter manufacturing processes for customers.