Robbins Geller Rudman & Dowd LLP (“Robbins Geller”) (//www.rgrdlaw.com/cases/rubicon/) announced that a class action has been commenced in the United States District Court for the Northern District of Illinois on behalf of purchasers of Rubicon Technology, Inc. (“Rubicon”) (NASDAQ:RBCN) common stock in the Company’s public offering on or about March 19, 2014 (the “Offering”).