Northern Trust has expanded its long-standing relationship with the North Dakota Retirement and Investment Office (NDRIO) to include outsourced trading services, supporting the agency’s strategy to bring more of its State Investment Board’s (SIB) asset management in-house. Building on a partnership that began with custody services in 1990, NDRIO will deploy Northern Trust’s Integrated Trading Solutions (ITS) platform to enhance trading efficiency and execution coverage for assets that will be managed by the agency rather than external investment firms.