McDonald's is the world's largest chain of hamburger fast-food restaurants, serving over 68 million customers daily in over 100 countries. The company was founded in 1940 by two brothers, Richard and Maurice McDonald, in San Bernardino, California. Today, McDonald's is a publicly traded company listed on the New York Stock Exchange under the ticker symbol MCD. The company is known for its iconic golden arches logo and its menu of burgers, fries, chicken nuggets, and breakfast items. McDonald's has a strong brand presence and is widely recognized for its marketing and advertising efforts, including the popular "I'm Lovin' It" slogan and the Ronald McDonald mascot.