Webster Financial, an American commercial bank based in Stamford, Connecticut, completed the acquisition of StoneCastle Insured Sweep, a technology-enabled deposit management platform, from StoneCastle Partners, a provider of banking and associated technologies. Financial terms were not disclosed. "The acquisition complements our strategy to build a bank with diverse funding capabilities and technology-enabled businesses. interLINK is a unique deposit channel that provides a scalable source of liquidity for the company," John Ciulla, Webster Financial President and CEO.