Micron Technology (MU) started the mass production of 16Gb DDR4 products using 1z nm (nanometer) process technology. MU has returned over 37% YTD.

source https://finance.yahoo.com/m/4aa5c322-61eb-3f3b-a5d4-396e59bbd632/how-is-micron-scaling-up-its.html?.tsrc=rss