Quantbot Technologies, a global quantitative investment adviser, has renewed its lease and tacked on some additional square footage at 369 Lexington Avenue, Commercial Observer can first report. The company signed an early renewal for the entire 6,183-square-foot ninth floor in the building between East 40th and East 41st Streets, and added 4,000 square feet on the seventh floor, said Benjamin Stavrach, the director of leasing and property management for the landlord, Triangl