$OLED material sales peaked. It had a good run, from 2012-2017. Slowing high-end smartphone sales and a shift towards LED, from OLED, to save money, risks even lower sales for $OLED stock. The stock peaked at $209: $OLED, Universal Display Corporation / H1 Universal Display Stock will fall below $80/share, down from $94.Agree or disagree?Login now to vote. Join the group of Value Stocks. With ~830 members. Comment below.Related: Himax Technologies $HIMX already noticed OLED demand falling. Applied Materials $AMAT did, too. Investors did not take it well...$AMAT fell ~ 10% on Fri, May 18.