The algorithm driven conduct of platform operators, as the expert handlers of big data, is starting to challenge the way in which competition law needs to be enforced. Businesses, especially platform operators, acquire data and particularly pricing information from other businesses in real-time....

This paper analyzes the inner workings of cartels. To understand how sanctioning institutions prevent cartel formation we study their effect on firms' communication in a laboratory experiment. Using machine learning to organize the chat communication into topics, we find that firms are less...