NEW YORK CITY — SL Green Reatly Corp. has acquired a leasehold position in The Graybar Building for $7.6 million. The 31-story, 1.5 million-square-foot office and retail building is located at 420 Lexington Ave. in Midtown Manhattan, New York City. SL Green first acquired the property in 1998. Earlier this year, the company acquired another leasehold position in the building from W&M Properties and refinanced its mortgage on the property with TIAA-CREF. Cushman & Wakefield Sonnenblick Goldman advised SL Green in the transaction.