Concorde Investment Services said Sept. 22 that four registered representatives have joined Fortitude Investment Group LLC, a Concorde-affiliated firm specializing in 1031 exchanges and Delaware statutory trusts. Natalie Bender, Cathy O’Neill, Daniel Gamini, and Brian Coughlin are now registered with Concorde, the independent broker-dealer and registered investment adviser and are advising accredited investors through Fortitude.