Brookfield Infrastructure Partners L.P. is a publicly traded limited partnership with corporate headquarters in Toronto, Canada, that engages in the acquisition and management of infrastructure assets on a global basis.Until a spin-off in January 2008, Brookfield Infrastructure was an operating unit of Brookfield Asset Management, which retains a 30 percent ownership and acts as the partnership's general manager. The company's assets carried a book value of US$21.3 billion, on December 31, 2016.Brookfield Infrastructure Partners owns and operates a global network of infrastructure companies in utilities, transportation, energy and communications infrastructure. It invests in transmission and telecommunication lines, toll roads, ports and pipelines. The company has an equity market capitalization of about US$17.7 billion with an investment-return target of 12 to 15 percent. Its annualized total returns since inception have been 18% on the NYSE and 26% on the TSX.Sam Pollock is the chief executive officer of Brookfield Infrastructure Partners. He has held this position since 2006, and has been with Brookfield Asset Management since 1994.