The Market Event Feed (MEF) offers programmatic access to real-time and historical NYSE Group Corporate Action Data. Making requests through the MEF API can be done by customizing the criteria you would like to receive, such as specific events, date ranges, symbols and many others. This allows for corporate action data to be received how and when you want it. The MEF API includes events such as new listings (e.g. IPOs, spin-offs and structured product listings), corporate actions, cash dividends, and more.