Capital Buzz: Halifax Group snaps up another contractor Four more Dogtopia doggie daycares are opening in the area. Text Size PrintE-mailReprints By Thomas Heath, Published: April 15 The Halifax Group, the mid-market private equity firm led by Washington Nationals’ part-owner David Dupree, is on the hunt for more acquisitions in the federal purchasing landscape, following the recent completion of a deal to combine two Washington area consulting companies.