This calendar from CBOE is an options expiration calendar for 2025, detailing key dates for various types of options, including equity, equity index, ETF, ETN, and VIX options. It helps traders and investors track expiration dates, such as standard expirations, AM-settled equity index options, VIX options, and weekly expirations, as well as holidays and quarterly index expirations. This is useful for planning trades and managing positions effectively.