The clash between the investors is another twist in a years-long sales process for the 111-year-old building at the corner of Fifth Avenue and Central Park South.
Blackstone Group LP agreed to acquire luxury hotel owner LaSalle Hotel Properties in an all-cash transaction that values LaSalle at $33.50 a share, or $4.8 billion including debt.
The board expanded the scope of its investigation after co-founder Steve Wynn stepped down as CEO in February following a wave of harassment allegations.
Builder optimism has its roots in solid sales that are being bolstered by resilient hiring and larger take-home pay following federal government tax cuts.
Tricon Capital Group Inc. has become the third-largest publicly listed landlord of U.S. single-family rentals by snapping up homes from Arizona to Florida.
While GreenOak has historically spent most of its capital in New York, San Francisco, Los Angeles and Boston, it will also target other major cities, including Seattle, Washington and Miami.