Pictured: Legacy at Highlands Ranch, a 422-unit complex in Highlands Ranch, CO, which Starwood acquired from Equity Residential in a $5.365 billion multifamily portfolio sale in 2016.Real estate mogul Sam Zell’s multifamily investment company Equity Residential is poised to re-enter the Denver market less than three years after announcing it would divest all of its Denver-area properties. David Neithercut, chief executive of Chicago-based Equity...