Samsung Electronics has announced a reduction of its investment in DRAM this year, and focus on NAND. During th elast ten days, Samsung held investor relations (IR) events for institutional investors in the U.S. and Korea. At the IR event held in New York and Boston from the 14th to 16th, investors paid attention to 3D NAND flash, organic light-emitting diode (OLED) and smartphone sales performance. In particular, Samsung Electronics revealed its plan to reduce the investment in DRAM at the event for the first time this year. The company's NAND flash business is very profitable and could make up for sluggish sales in the DRAM sector and boost total sales in the company's semiconductor sector. Samsung significantly increased margins in the NAND flash sector this year through steady cost reduction. Its operating margins in the NAND flash sector will grow from 17 percent last year to 25 percent this year.