“These 5 Tech Stocks Crushed the Market in 2017”
https://www.fool.com/investing/2018/01/04/these-5-tech-stock…
OLED is the only one I’ve heard of. The others are:
Straight Path Communications (STRP)
Electro Scientific Industries (ESIO)
Systemax (SYX)
Control4 Corp (CTRL)
STRP is getting acquired by Verizon.