Manhattan’s luxury market has another strong week under its belt. Last week, there were 38 contracts for properties asking $4 million or more — the best week since August 2016 when 43 contracts were inked, according to Olshan Realty’s latest market report. Of the 38 homes that went into contract last week, the vast majority were condos in addition to seven co-ops and three townhouses. Last week’s contract activity is a continuation of the upward trend that began in Manhattan’s luxury market late last year, particularly among new developments. Of the 38 luxury condos that went into contract last week, 17 were sponsor units.