1. SK Hynix considers U.S. listing amid soaring AI-driven valuations. 2. Company's shares surged nearly 230% this year due to AI demand. 3. Immediate 2.4% of shares may be listed as American depositary receipts. 4. Government support for chip industry expected to boost SK Hynix growth. 5. Firm invests $4 billion in Indiana for advanced chip manufacturing.