UniPixel (UNXL -7.9%) fell hard again today in the absence of major news. Though shares are still up 42% YTD and over 3x from a year ago, they're now down 53% from their April 17 high. Yesterday, Feltl's Jeffrey Schreiner reported rival metal mesh touch sensor developer Atmel (ATML) sees Fujifilm as a "much more significant competitor" than UniPixel. Atmel management told Schreiner the company expects to qualify its Colorado facility for XSense production by the end of May, but that delays have led it to put orders from tier 2/3 clients on hold. Cowen argued last week UniPixel's UniBoss sensors have variable cost and throughput advantages over rivals.