BENSENVILLE, Ill.--(BUSINESS WIRE)--Rubicon Technology, Inc. (Nasdaq:RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor, and optical industries, will report financial results for the first quarter ended March 31, 2015 on Thursday, May 7, 2015, after the market closes. In conjunction with the earnings release, management will host a conference call at 5:00 p.m. EDT (4:00 p.m. CDT) on May 7 to review the financial results. To participate in the conference call
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