General Electric Company (GE) is an American multinational conglomerate incorporated in New York and headquartered in Boston. As of 2018, the company operates through the following segments: aviation, healthcare, power, renewable energy, digital industry, additive manufacturing, venture capital and finance, lighting, transportation, and oil and gas.In 2018, GE ranked among the Fortune 500 as the 18th-largest firm in the U.S. by gross revenue. In 2011, GE ranked among the Fortune 20 as the 14th-most profitable company. As of 2012, the company was listed as the fourth-largest in the world among the Forbes Global 2000, further metrics being taken into account. Two employees of GE have been awarded the Nobel Prize: Irving Langmuir in 1932 and Ivar Giaever in 1973.