 Shares of Columbia Property Trust Inc. CXP, -1.14 soared 15.2 in premarket trading Tuesday, after the real estate investment trust announced an agreement to be acquired by funds managed by Pacific Investment Management Co. LLC PIMCO in a deal valued at 3.9 billion. Under terms of the deal, PIMCO will pay 19.30 for each Columbia Property share outstanding, a 16.7 premium to Fridays closing price of 16.54. 