There are two main access options: (1) access through our web interface / GUI and (2) direct access through our API.
Web interface / GUI access comes in two forms: Either you purchase one-month access for you personally or your university library has subscribed to our service and you can use your university email address to access our calculators.
Direct access through our API is typically purchased for use of the R-package "EventStudy". You can get a personal API key here. You can use this API key also for other purposes than the R-package. For example, you could integrate our abnormal return calculators in your own proprietary event-based trading system.
Besides these options to access our full capabilities, there is the option to use a free basic abnormal return calculator.