The world's leading software company, Microsoft is the force behind the Windows operating systems and the Office suite of software. Interactive Chart. 1W 1M 3M Microsoft Corporation is an American multinational technology company with headquarters in The company's 1986 initial public offering (IPO), and subsequent rise in its share price, created three billionaires and an estimated 12,000 the first computer in the company's history to have its hardware made by Microsoft. View today's stock price, news and analysis for Microsoft Corp. (MSFT). Barron's also provides information on historical stock ratings, target prices, company