Bring Your group chat to Work Day is a holiday in the financial industry. It is always on August 8, as can be seen on the Economist's Event Calendar. On this day, all employees bring their best group chat members to work. This is not always successful as, usually, there is a big debate on who is the leader and who gets to take their members to work.
It is highly suggested that members work out a reasonable rotation period to avoid things getting nuts. Cause nuts, after all, it's what you snack on!