Arthur J. Gallagher, a global insurance brokerage, risk management and consulting services firm, completed the acquisition of CRES Insurance Services, which designs, markets and services comprehensive errors & omissions insurance and risk management services to real estate firms and professionals. Financial terms were not disclosed. "CRES's specialized expertise and product offerings to real estate agents complement and expand our strengths in that market. I am very pleased to welcome Steve Sargenti and his associates to our growing global team," J. Patrick Gallagher, Jr., Arthur J. Gallagher Chairman, President and CEO.