LexisNexis Group is a corporation providing computer-assisted legal research as well as business research and risk management services.During the 1970s, LexisNexis pioneered the electronic accessibility of legal and journalistic documents.n 2000, LexisNexis purchased RiskWise, a St. Cloud, Minnesota company. In 2002 it acquired a Canadian research database company, Quicklaw. In 2004, Reed Elsevier Group, parent company of LexisNexis, purchased Seisint, Inc, of Boca Raton, Florida.