Pembroke, a global real estate investment adviser that started in Boston 28 years ago, announced its purchase of Proto, a 218-unit apartment complex in Cambridge's Kendall Square, as it continues to seek out high-quality residential properties to diversify its portfolio of largely office and mixed-use properties. BXP, formerly Boston Properties, which developed Proto in 2018, sold the 95% occupied multifamily property for an undisclosed price.
