In 1965, McDonald's Corporation went public. Common shares were offered at $22.50 per share. By the end of the first day's trading, the price had risen to $30. A block of 100 shares purchased for $2,250 in 1965 was worth, after 12 stock splits (increasing the number of shares to 74,360), over $5.7 million as of year-end market close on December 31, 2010. In 1980, McDonald's Corporation became one of the 30 companies that make up the Dow Jones Industrial Average.