Possible Clues:

• Big Blue company
• Creator of Watson, a memorable 2011 "Jeopardy!" winner
• Major tech stock
• Company with an Extreme Blue internship program
• DOS popularizer
• Company that invented the ATM and the UPC
• Co. with the motto 'Think'
• Dow Jones Industrials company
• Big name in storage
• Tech company known as ''Big Blue''