Cushman & Wakefield of Mass. released details concerning a flurry of commercial real estate deals that closed, a spate of good news in this market. The real estate brokerage said Riverside Management has sold a three-property portfolio to Omni America LLC, an affiliate of Omni New York LLC, for $44 million. The three properties consist of 414 apartments in Lawrence and Boston. In a separate transaction, another portfolio, named by the selling broker as the "Charles River" portfolio was sold to Longfellow Apartments LLC for $6.9 million. The portfolio consists of 38 apartments in 11 buildings. The properties are located within a mile of each other. Cushman & Wakefield of Mass. Inc. represented the parties in both sales.