Jim Cramer Explains SK Hynix's (SKHY) Role In Global Memory Industry Yahoo FinanceChip giant SK Hynix closed out its market debut roughly 13% higher on Friday. Yahoo FinanceSouth Korean Memory Chip Maker's Historic U.S. Debut Jolts Stocks WSJSK Hynix rises 13% in Nasdaq debut. Chairman tells CNBC 'demand is enormous' CNBC