As an AI language model, I don’t have access to real-time data or the ability to browse the internet. Therefore, I cannot provide you with the most current information on the most profitable horse racing events for bookmakers this year.
Horse racing events’ profitability for bookmakers can vary depending on several factors such as the popularity of the event, the number of participants, the betting volume, and the odds offered. Significant events like the Kentucky Derby, Royal Ascot, Dubai World Cup, Prix de l’Arc de Triomphe, and Melbourne Cup are generally considered to attract a significant amount of betting activity.
To obtain the most up-to-date and accurate information about the most profitable horse racing events for bookmakers, I recommend consulting industry reports, financial analysis platforms, or specialized sports betting websites.