Western Digital (WD), or Western Digital Corporation, is an American data storage company and one of the leading hard disk drive producers in the world. Established in 1970, Western Digital quickly took off in the electronics sector. Later on, it switched its primary focus to data storage industry. Now the company delivers computer solutions for businesses and individuals. Western Digital shares are traded on the NASDAQ stock exchange. The company is a member of two major market indices: the S&P 500 and the NASDAQ-100.