Some large direct leases have recently been signed in Manhattan, a shift in a commercial market that has been slow so far this year, the New York Post reported. Syska Hennessy Group, an engineering firm specializing in technology, construction and specialized consulting, has leased 64,788 square feet on the 14th and 15th floors of 1515 Broadway. The asking rent was $58 per square foot. In the 1.8 million-square-foot tower, only 34,000 square feet is now vacant. Syska Hennessy is moving from 11 West 42nd Street and will have 15,000 square feet more at 1515 Broadway than it had at its previous location. AlixPartners, an advisory firm that focuses on corporate financial performance, has also signed a lease for 63,000 square feet at 40 West 57th Street.