Titan (corporation)

Titan, Unlimited, commonly known simply as Titan or the Titan corporation is a manufacturing, robotics, AI, space mining and colonization, research & development and news and space broadcasting conglomerate founded in 2057 in New York City as a space exploration company. Starting small and barely on the radar for much of the 2060's and 70's, the company was almost a true story of the Little Engine That Could which rapidly expanded to millions of employees working across three continents and on the Moon by the late-2070's and 2080's. 
By 2089 the company was leading an outpost on Titan, over a decade after their target date, and employed nearly 4 million, surpassing the largest militaries on Earth in manpower - India, APTO and the American States - by millions in the 2100's and 2200's, becoming the largest business entity in human history. In 2125, Titan would buy Walmart entirely, to become a retail giant as well, and expand to over 6.5 million employees, or roughly the size of Bulgaria. 
Over the next decade, Titan would acquire Microsoft, Apple and Saudi Aramco, expanding into technology and oil and expanding its market cap from approximately 4 trillion to roughly 10.8-11 trillion dollars and a work force of nearly 7 million. With a total security force of approximately 525,500 - the Titan corporation would rival even some nation-states in its available firepower. Titan is often considered a great power unto itself, holding sway in the United Saturnine Republics, Lunar nations, on Mars and in the Asteroid Belt.