These are the known High Growth Stock User Groups in the United States and Europe. 
To add, change, remove a User Group contact

Belgium
Contact: Jean De Wael

Los Angeles and Southern California
Contact: Ian Woodward

San Francisco and Northern California
Contact: John Booth

Hartford, Connecticut
Contact: Clif Backes

Dallas-Fort Worth, Texas
Contact: Dave Steckler

Houston, Texas
Contact: Duke Jones

San Antonio, Texas
Contact: Maynard Burstein

Washington, D.C.
Contact: Ray Ebert