Models, athletes, and actors took over BTIG's trading floor and surprised a lot of clients

Clients of equities trading firm BTIG received some unexpected calls this Tuesday, April 28, as celebrities like Alex Rodriguez and Padma Lakshmi worked to "make a call, make a trade, and make a difference."

There for the firm's 13th annual Charity Day, 50 plus A-listers helped raise over $5 million for philanthropic causes around the world.

Among the "celebrity guest traders" was model Hannah Davis, New York Giant Eli Manning, "Sex and the City" star Kristin Davis, fashion designer Tommy Hilfiger, chef Geoffrey Zakarian, and, towering above them all, retired NBA star Shaquille O'Neal, who has been working the event since its inception in 2003.