For the purpose of statistics, an aggregated read count of each article is stored in the database. Since the count is aggregated over all visitors, it can't be traced back to you. No other piece of data is stored, and no personal data is logged. This site doesn't use cookies, nor 3rd analytics services. Therefore, we can't find out any personal information such as your reading habits, referal sources, IP address, or geolocation.
However, if you enable comments, some data about you might be collected by Disqus, which is the provider and the controller of your private data related to comments.