https://www.reuters.com/article/us-ptc-stake-rockwell-automat/rockwell-to-take-8-percent-stake-in-software-maker-ptc-for-1-billion-idUSKBN1J712V >Rockwell Automation said on Monday it would buy an 8.4 percent stake in PTC for $1 billion as it looks to combine technologies such as internet of things, and augmented reality with its factory automation equipment and software.